稻纵卷叶螟钙粘蛋白Cry毒素结合区编码基因及其编码蛋白与应用

文档序号:3321 发布日期:2021-09-17 浏览:61次 英文

稻纵卷叶螟钙粘蛋白Cry毒素结合区编码基因及其编码蛋白 与应用

技术领域

本发明属于生物基因工程领域,特别是稻纵卷叶螟钙粘蛋白cadherin毒素结合区编码基因与应用。

背景技术

稻纵卷叶螟Cnaphalocrocis medinalis是中国和其他亚洲国家在水稻上的主要害虫(Khan et al.,1988;Riley et al.,1995;Yang et al.,2018a)。稻纵卷叶螟幼虫通过折叠水稻叶片使其叶片脱叶来取食,造成水稻产量严重损失(Padmavathi et al.,2013;Senthil-Nathan,2019)。目前,对稻纵卷叶螟的防治主要使用化学杀虫剂,由于环境影响、害虫抗药性等问题,不建议对害虫使用化学农药(Li et al.,2016;Xiao and Wu,2019)。生物农药由微生物或天然产物制备而来,且对环境无害,是化学农药有效的替代品(Chandleret al.,2011)。来源于苏云金芽孢杆菌(Bacillus thuringiensis,Bt)的Bt毒素蛋白是目前最常用的生物农药,在孢子形成阶段会产生杀虫晶体蛋白(Cry毒素),这些晶体蛋白对特定昆虫具有高活性,对脊椎动物或环境无害(Bravo et al.,2011; Mendelsohn et al.,2003;Sanahuja et al.,2011)。因此,Cry毒素应用比较广泛的方式包括转基因作物和喷洒制剂以防控害虫。

Cry毒素的作用方式已被广泛研究,但机制仍存在争论(Soberon et al., 2009;Vachon et al.,2012)。现有2种作用模式解释Cry毒素的作用机制,即“穿孔模型”(Bravoet al.,2004)和“信号传导模型”(Zhang et al.,2006)。两种模型都认为,目标昆虫摄取Bt毒素,其后在碱性中肠环境中将其溶解,再由昆虫的消化蛋白酶激活。然后,活化的毒素(active toxins)会结合位于中肠细胞刷状缘膜囊泡((brush border membranevesieles,BBMV)上不同蛋白受体 (Knowles and Ellar,1987;Jurat-Fuentes andCrickmore,2017)。在穿孔模型中,活化的毒素可通过与特定钙粘蛋白(cadherin)结合而发生寡聚。接下来,毒素寡聚物与另一种受体蛋白如氨肽酶N(aminopeptidase N,APN)或碱性磷酸酶(alkalinephosphatase,ALP)结合,并插入中肠上皮细胞膜中形成空洞导致昆虫死亡(Pardo-Lopez et al.,2013;Adang et al.,2014)。最近,ABC转运蛋白已成为Cry毒素的关键功能受体,并被认为促进Cry毒素寡聚化和寡聚体穿孔(Heckel,2012;Ocelotl etal.,2017)。相比之下,信号传导模型中Cry毒素与中肠cadherin结合后,Mg2+依赖的cAMP信号通路被激活,从而导致细胞凋亡,并造成昆虫死亡(Zhang et al.,2005;Zhang et al.,2006)。这两种模型都表明,Cry毒素与cadherin的结合会触发复杂的多步骤反应过程。此外,在几种鳞翅目害虫中证实了cadherin突变与其对Cry毒素产生抗性相关(Fabrick etal.,2007;Gomez et al.,2001)。在烟芽夜蛾YHD2抗性品系中,钙粘蛋白基因表达的缺失蛋白已经与Cry1Ac毒素不存在结合区(Gahan,2001)。因此,钙粘蛋白在研究Bt杀虫活性和抗性机制的分子基础上是至关重要的受体(Gahan et al.,2001;Fabrick and Tabashnik,2007;Zhang et al.,2012)。

通过生物信息学对cadherin的结构进行预测,发现其二级结构包括氨基末端信号肽(amino-terminal signal peptide,SIG),细胞外结构区(包含9-14 个钙粘蛋白重复序列,cadherin repeats,CR),近膜端细胞外结构区 (membrane-proximal extracellulardomain,MPED),跨膜结构区 (transmembrane domain,TMD)和细胞质结构区(cytoplasmicdomain,CYT)。在鳞翅目昆虫的Cadherin中,Cry毒素结合区(toxin-binding region,TBR)主要位于靠近细胞膜的6个CR结构区(例如CR6-11/CR7-12)和MPED(Fabrick and Wu,2015)。发明人前期确定了小菜蛾cadherin片段(T1202-I1447, PxCad-TBR)及其来自棉铃虫的同源片段(T1217-L1461,HaCad-TBR)与Cry1Ac 毒素结合(Gao et al.,2019)。异源表达的含有TBR的钙粘蛋白片段以高亲和力结合Cry毒素,促进寡聚化并增强某些鳞翅目昆虫的Cry毒性(Chen et al., 2007;Fabrick et al.,2009;Pacheco et al.,2009b;Park etal.,2009; Park et al.,2019)。

钙粘蛋白是理解Cry毒素杀虫作用和抗性机制中一个重要的受体,对研究 Cry毒素与昆虫cadherin作用机制及设计特异性的杀虫蛋白具有重要意义。目前关于稻纵卷叶螟的cadherin基因,特别是毒素结合区的相关基因尚未见报道。

发明内容

针对上述问题,本申请首次从稻纵卷叶螟幼虫克隆得到一个cadherin基因 eDNA的全长序列,进而确定了它的核苷酸序列和氨基酸序列,并在此基础上定位了稻纵卷叶螟cadherin的Cry1Ac毒素结合区CmCad-CR6-MPED(G759-L1575) 编码基因,并进一步开发了其应用。

具体来说,本申请是通过如下技术方案实现的:

首先,本申请首次确定了稻纵卷叶螟钙粘蛋白Cry毒素结合区基因,其核苷酸序列如:SEQ ID NO.14所示;该基因位于稻纵卷叶螟钙粘蛋白基因全长序列 (如SEQ ID NO.10所示)的第2398-4848位;

其次,本申请定位了稻纵卷叶螟钙粘蛋白Cry毒素结合区基因的编码蛋白,其氨基酸序列如SEQ ID NO.15所示。该段蛋白位于稻纵卷叶螟钙粘蛋白氨基酸序列(如SEQ IDNO.11所示)的第759-1575位;

第三,本申请提供了上述稻纵卷叶螟钙粘蛋白Cry毒素结合区基因在预测稻纵卷叶螟Cry毒素抗性中的应用;若待测稻纵卷叶螟的钙粘蛋白Cry毒素结合区基因核苷酸序列与SEQ ID NO.14不同,则说明该稻纵卷叶螟受体发生基因突变,导致结合能力降低,判断昆虫对Cry毒素产生了抗性。

第四,本申请提供了上述稻纵卷叶螟钙粘蛋白Cry毒素结合区基因的编码蛋白在与Cry1Ac毒素结合中的应用。

第五,本申请提供了上述稻纵卷叶螟钙粘蛋白Cry毒素结合区基因的编码蛋白在筛选针对稻纵卷叶螟的Bt蛋白中的应用;若待筛选的Bt蛋白与Cry毒素结合区基因的编码蛋白CmCad-CR6-MPED具有高度亲和力,则必然会插入入稻纵卷叶螟中肠BBMV上,使上皮细胞膜形成孔洞致死,利用该编码蛋白 CmCad-CR6-MPED可以快速筛选或改造对稻纵卷叶螟具有高毒力的Bt毒素杀虫蛋白。

本申请在首次获得稻纵卷叶螟cadherin全长序列的基础上,预测了 CR6-MPED区(G759-L1575)作为CmCad候选的Cry1Ac毒素的毒素结合区。构建了CmCad-CR6-MPED重组蛋白并克隆至pET26b(+)载体中,在大肠杆菌BL21(DE3) 中表达并纯化。确定纯化的重组蛋白CmCad-CR6-MPED大小约120kDa。进一步确定了稻纵卷叶螟cadherin的毒素结合区CmCad-CR6-MPED与CrylAc毒素的结合,为CmCad作为CrylAc毒素的功能受体提供了可能性。该结合区的定位有助于研究对Bt毒素作用机制和抗性机制,并以此为基础设计更有效和特异性的杀虫蛋白用于鳞翅目农业害虫(特别是稻纵卷叶螟)的防治。

附图说明

图1是来自鳞翅目螟蛾科(Pidralidae)中Ostrinia nubilalis, O.furnacalis,Diatraea saccharalis和Chilo inhibitoralis的cadherin 氨基酸详细序列比对。其中,保守区域用红色虚线框表示,用于设计简并引物对。用于分析的cadherin序列来自NCBI数据库,各序列登录号如下:O.nubilalis (AAY44392.1)、O.furnacalis(ABS59299.1)、D.saccharalis(AFI81418.1) 和C.pressalis(AAM78590.1)。

图2是稻纵卷叶螟cadherin的结构特征和系统发育分析。其中,A为CmCad 蛋白的保守域结构示意图。图示了信号肽(SIG)、cadherin重复序列(CR)、近膜胞外区(MPED)、跨膜区(TMD)和胞质区(CYT)。各区域结构构上方的氨基酸数字分别表示信号序列和各区边界。B为CmCad与其他34种鳞翅目cadherin的系统进化关系。各昆虫cadherin基因的全长氨基酸序列从NCBI数据库检索获得。引导值(%)显示在每个分支上。白色文字代表昆虫科。使用的钙粘蛋白序列包括 Cnaphalocrocis medinalis(QNS31153.1),Vanessa tameamea(XP_026498507.1),Danaus plexippus plexippus(OWR42519.1),Bicyclus anynana(XP_023948291.1),Pieris rapae (XP_022113402.1),Leptidea sinapis(VVD00118.1),Zerene cesonia (XP_038217094.1),Papilio polytes(XP_013137775.1),Papilioxuthus (KPI99469.1),Papilio machaon(XP_014361099.1),Eombyx mandarina (XP_028026250.1),Bombyx mori(NP_001037682.1),Manduca sexta (AAM21151.1),Lymantriadispar(AAL26896.1),Lymantria xylina (QFP12818.1),Hyphantria cunea(ASV70529.1),Arctia plan taginis (CAB3246981.1),Plutella xylostella(ABU41413.1),Hyposmocoma kahamanoa (XP_026330204.1),Pectinophora gossypiella(ASX13586.1),Ostrinia nubilalis (AAY44392.1),Ostrinia furnacalis(ABS59299.1),Diatraea saccharalis (AFI81418.1),Chilo infuscatellus(QCI02835.1),Chilosuppressalis (AAM78590.1),Trichcplusiani(XP_026727179.1),Helicoverpa armigera(ABI55357.1),Helicoverpa zea(AKH49609.1),Helicoverpa punctigera (AVE17268.1),Heliothis virescens(AAK85198.1),Spodoptera exigua (AEB97395.1),Spodopteralitura(XP_022826291.1),Mythimna separata (AEI61920.1),Sesamia inferens(AEL22856.1)和Sesamia nonagrioides(ABV74206.1)。

图3是表达的CmCad-CR6-MPED重组蛋白的SDS-PAGE、Western blotting 分析。其中,A为CmCad-CR6-MPED片段的各分区结构示意图。B为pET26b重组质粒诱导蛋白表达和Ni柱纯化。泳道M:蛋白质分子量;泳道1:未诱导的全细胞;泳道2:IPTG诱导的全细胞;泳道3:来自周质的IPTG诱导的蛋白质;泳道4:IPTG诱导的包涵体;泳道5:纯化的CmCad-CR6-MPED重组蛋白。C为表达的CmCad-CR6-MPED重组蛋白与抗His抗体的Western blotting分析。泳道 M:蛋白质分子量;泳道6:抗His抗体检测pET26b空载;泳道7:抗His抗体检测纯化的CmCad-CR6-MPED重组蛋白。

图4是表达的CmCad-CR6-MPED重组蛋白与CrylAc毒素结合的ligand blotting分析。其中,A为链霉亲和素检测生物素标记的CrylAc毒素;未标记的CrylAc作对照。B为生物素标记CrylAc毒素检测CmCad-CR6-MPED重组蛋白的ligand blotting;pET26b空载作ligand blotting分析的阴性对照。

具体实施方式

为方便理解本发明所述技术方案,以下结合附图和具体实施例做进一步阐述,下列实施例仅用于说明而非是对本发明权利要求范围的限制;下述实施例中所述实验方法,如无特殊说明,均为常规方法;所述试剂和生物材料,如无特殊说明,均从商业途径获得。

实施例1稻纵卷叶螟钙粘蛋白cadherin基因全长序列扩增

1.1稻纵卷叶螟钙粘蛋白cadherin基因保守区序列扩增

稻纵卷叶螟采自江苏省南京市(118°52’E,32°01’N),室内饲养数代后,选取龄期一致的4龄幼虫,使用Invitrogen Trizol试剂盒提取RNA,并使用 InvitrogenSuperScriptTMII Reverse Transcriptase试剂盒对总RNA反转录获得cDNA模板。稻纵卷叶螟属于鳞翅目螟蛾科(Pidralidae),使用生物信息学软件DNAMAN 9.0版对与其同一科的4个昆虫(O.nubilalis、O.furnacalis、 D.saccharalis和C.pressalis)的cadherin氨基酸序列进行比对(图1)。根据这4个昆虫钙粘蛋白的保守区特征,设计了一对简并引物(核苷酸序列如 SEQ ID No.1所示的上游引物CmCad-con-F,和核苷酸序列如SEQ ID No.2所示的下游引物CmCad-con-R),用来扩增稻纵卷叶螟钙粘蛋白保守区;然后以cDNA为模板,并使用I-5TM2×High Fidelity Master Mix(美国MCLAB公司)通过PCR 扩增,其中,IUBcode简并引物核苷酸代码:R=A/G;Y=C/T;H=A/C/T;N=A/C/G/T

PCR扩增体系为:2×High Fidelity MasterMix 25μl、10μM的CmCad-con-F 引物和CmCad-con-R引物各2μl、cDNA模板2μl、ddH2O补足至反应总体系50 μl;

PCR扩增条件:94℃5min;94℃30s,56℃30s,72℃1min 30s,共30个循环;72℃延伸10min,4℃保持。

PCR反应结束后,琼脂糖凝胶电泳检测PCR产物为2667bp的单一产物,并将对应的PCR纯化产物送至南京擎科生物公司测序。测序的结果经过氨基酸序列比对,所得到的保守序列同鳞翅目螟蛾科4个昆虫具有高度保守性,表明已获得所需要的保守氨基酸区域。该保守区核苷酸序列如SEQ ID No.3所示,大小为 2667bp,其对应的889个氨基酸残基序列如SEQ ID No.4所示。

1.2稻纵卷叶螟钙粘蛋白cadherin基因全长序列获得

以步骤1.1所获得的RNA为模板,使用Smart RACE cDNA amplification kit(Clontech)构建RACE cDNA文库,操作步骤按此试剂盒说明书进行。获得产物为 5’RACEReady cDNA和3’RACE Ready cDNA,分别作为5’RACE和3’RACE反应的模板。

根据步骤1.1所获得的保守区核苷酸序列(SEQ ID No.3)设计了两种特异性引物(核苷酸序列如SEQ ID No.5所示的引物CmCad-5’-R,和核苷酸序列如 SEQ ID No.6所示的引物CmCad-3’-F)。使用Smart RACE试剂盒自带的通用引物 Universal Primer A Mix(UPM,其核苷序列如SEQ ID No.7所示)和引物 CmCad-5’-R进行5’RACE PCR反应。使用引物UPM和引物CmCad-3’-F进行3’RACE PCR扩增。PCR反应条件:94℃30s,72℃3min,5个循环;94℃30s, 70℃3min,5个循环;对于5’RACE PCR,94℃30s,68℃30s,72℃3min,25 个循环。而对于3’RACE PCR,每个步骤的延伸时间均为2分钟,其他步骤与5’RACE 相同。将所得PCR产物克隆到pClone007载体(擎科生物)中,并通过南京擎科生物公司进行测序。

将所得5’和3’核苷酸序列与步骤1.1的保守区核苷酸序列进行拼接,得到稻纵卷叶螟cadherin基因全长cDNA序列。获得全长基因cDNA序列后,设计了一对引物(核苷酸序列如SEQ ID No.8所示的CmCad-full-F,和核苷酸序列如SEQ ID No.9所示的CmCad-full-R),用于验证稻纵卷叶螟钙粘蛋白的开放阅读框(Open Reading Fram,ORF)。最后将所获得得5,455bp全长序列CmCad cDNA (SEQ ID No.10)提交至NCBI数据库(GenBank NCBI登录号MN796259.1)。

序列分析表明,克隆的cDNA序列包含一个5,175bp的ORF,一个123bp 的5’非翻译区(UTR)和一个157bp的3’-UTR,其中包含26bp的poly(A) 尾巴。经典的多腺苷酸化信号序列之一ATTAAA位于poly(A)尾部上游20bp。 CmCad cDNA编码1725个氨基酸(SEQ IDNo.11),预测分子量为192.85kDa, pI为4.06。

扩增所涉及的所有引物序列除UPM为试剂盒自带以外,均为南京擎科生物公司人工合成。

实施例2稻纵卷叶螟钙粘蛋白CmCad序列的结构与进化分析

使用ISRECProfile服务器(https://myhits.isb-sib.ch/cgi-bin/PFSCAN) 分析稻纵卷叶螟钙粘蛋白CmCad的二级结构特征。使用MEGA 7.0软件,通过邻位连接法(theneighbor-joining method)构建系统进化树,节点处的数字为 1000次重复的自展置信值(bootstrap values)。

预测的CmCad二级结构由信号肽(SIG)、11个cadherin重复序列(CR)、近膜胞外区(MPED)、跨膜区(TMD)和胞质区(CYT)组成,显示为典型的昆虫中肠 Cadherin结构(图2A)。

为研究来自不同昆虫物种的cadherin的进化关系,使用邻接法构建系统发育树(图2B),结果显示,3个蛱蝶科、3个粉蝶科、3个凤蝶科、2个蚕蝶科、 2个毒蛾科、2个裳蛾科、6个螟蛾科和9个夜蛾科(Trichoplusiani形成另一个簇)的Cadherin分别根据所属科进行聚类(图2B)。CmCad与欧洲玉米螟(O. nubilalis)和亚洲玉米螟(O.furnacalis)的cadherin聚集在一起(图2B)。

实施例3稻纵卷叶螟钙粘蛋白Cry毒素结合区的构建、表达和纯化

鳞翅目昆虫中钙粘蛋白Cry毒素的TBR主要位于靠近细胞膜的6个CR结构区(例如CR6-11/CR7-12)和MPED。具体到稻纵卷叶螟的CR6-MPED,为共计817 个氨基酸,对此进截短的CmCad-CR6-MPED片段行构建、表达和纯化(J.Zhong, X.Hu,X.Zhang,Y.Liu,C.Xu,C.Zhang,M.Lin,X.Liu.Broad specificity immunoassay for detection of Bacillusthuringiensis Cry toxins through engineering of a single chain variablefragment with mutagenesis and screening.International Journal of BiologicalMacromolecules,2018,107: 920-928.)。具体为:分别使用含有NcoI和NotI限制性酶切位点的正向引物(核苷酸序列如SEQ ID No.12所示的CmCad-CR6-MPED-F,)和反向引物(核苷序列如 SEQ ID No.13所示的CmCad-CR6-MPED-R)扩增CmCad-CR6-MPED片段,引物序列为南京擎科生物公司人工合成。

扩增采用I-5TM2×PCR Master Mix,以pClone007-CmCad质粒为模板,98℃ 2min,98℃20s,58℃20s,30个循环,72℃1min,最后的延伸步骤是72℃5min。

PCR产物用琼脂糖凝胶DNA提取试剂盒(Axygen)纯化,并使用NcoI和 NotI酶切位点亚克隆到pET-26b(+)载体(Novagen)中。将连接产物转化到大肠杆菌(E.coli)BL21(DE3)感受态细胞(全式金生物公司)中。通过测序验证成功转化的重组质粒及核苷酸序列(南京擎科生物公司)。

经测序确认的pET-26b-CmCad-CR6-MPED重组蛋白在含有50μg/ml卡那霉素(kanamycin)(索莱宝公司)的2×TY培养基中培养,37℃、250rpm培养至对数生长后期(OD600=0.5-0.6),加入1mM异丙基-β-D-硫代半乳糖苷 (isopropyl-β-D-thiogalactopyranoside,IPTG)(索莱宝公司),然后在 30℃、220rpm下再培养14h诱导CmCad-CR6-MPED的表达。诱导表达的细胞在8,000×g下离心15min,在pH 7.4的PBS中重悬沉淀,并通过超声破碎裂解。细胞裂解产物在12,000×g离心30min,沉淀中的包涵体溶解在8M尿素中,在Labquake Shaker Rotisserie(Thermo Fisher Scientific公司)上4℃缓慢旋转孵育过夜。溶解的重组蛋白在HiTrap Ni2+柱(GE Healthcare公司)上纯化。CmCad-CR6-MPED用100mM咪唑洗脱,然后在含6M、4M、2M且无尿素的PBS 中逐渐透析以去除残留的尿素和咪唑。CmCad-CR6-MPED的纯度通过10%SDS-PAGE 进行评估,并通过Bradford蛋白检测试剂盒(索莱宝公司)确定蛋白浓度。

为了检测CmCad-CR6-MPED重组蛋白的表达,采用了Western blotting方法。将2.0μg纯化蛋白通过10%SDS-PAGE分离,然后电转移至聚偏二氟乙烯 (polyvinylidenedifluoride,PVDF)膜(Millipore公司)。转移后,室温下将 PVDF膜在封闭缓冲液(含有0.1%Tween-20和3%BSA的PBS,PBST)中封闭1h,然后用抗His标签抗体(1∶7,500稀释)(康为世纪生物公司)孵育1h。印迹用洗涤缓冲液(含有0.1%Tween-20的PBS,PBST)洗涤5次,每次10分钟,然后使用ChromoSensor试剂(GenScript公司)在室温下显色2-3分钟,并使用分辨率高的数码相机拍照。

根据鳞翅目昆虫cadherin描述的Cryl毒素结合区的同源性特征,本实施例预测了CR6-MPED区(G759-L1575)作为CmCad候选的Cry1Ac毒素的毒素结合区(图3A)。构建了CmCad-CR6-MPED重组蛋白并克隆至pET26b(+)载体中,在大肠杆菌BL21(DE3)中表达,在IPTG诱导下并通过SDS-PAGE确定诱导蛋白的数量(图3B,泳道:1-4)。由于表达的CmCad-CR6-MPED重组蛋白带有His标签,使用HiTrap Ni2+柱纯化后,所表达的蛋白约为120kDa(图3B,泳道:5)。 Western blotting进一步检测,pET26b空载体与抗His标签抗体没有结合(图3C,泳道:6),纯化的重组蛋白CmCad-CR6-MPED与抗His标签抗体结合大小(约 120kDa)(图3C,泳道:7)与SDS-PAGE结果一致。这些结果表明120kDa左右的条带是表达的重组蛋白CmCad-CR6-MPED,其核苷酸序列如SEQ ID NO.14所示,氨基酸序列如SEQ ID NO.15所示。

实施例4稻纵卷叶螟钙粘蛋白Cry毒素结合区与Cry1Ac的结合

Cry1Ac毒素购自Envirotest-China(Envirologix Inc),并溶解在碳酸钠缓冲液(CBS,pH 9.6)中,分装并储存于-80℃直至使用。使用EZ-Link Sulfo-NHS-SS-Biotinylation试剂盒(Thermo Fisher Scientific)对可溶性 Cry毒素进行生物素标记,并按照试剂盒说明书进行操作。具体为:28.4μL 10 mM生物素用于标记1mL终体积反应中的1mg Cry毒素。在室温下缓慢旋转反应2h,然后通过脱盐柱去除过量的生物素试剂。通过使用辣根过氧化物酶 (horseradish peroxidase,HRP)偶联的链霉亲和素(streptavidin)(Thermo Fisher Scientific)结合Western blotting检测生物素标记效率。使用Bradford法测定生物素化Cry毒素的浓度。

为了检测CrylAc和CmCad-CR6-MPED之间的结合,使用ligand blotting 方法。具体方法跟上述Western blotting检测基本一致,不同之处在于封闭缓冲液封闭后,将PVDF膜与20nM生物素标记的Cry毒素在室温下孵育1h。PBST 洗涤5次后,然后用streptavidin-HRP(1∶7,500稀释)结合PVDF膜1h。最后显色方法跟前述Western blotting检测一样。

为了进一步确定CmCad-CR6-MPED重组蛋白与CrylAc毒素的结合,使用生物素标记的CrylAc对表达的重组蛋白进行ligand blotting分析。检测结果如图4A所示,Westernblotting结果表明了通过streptavidin-HRP检测证实了生物素标记的CrylAc毒素。ligandblotting分析的结果确定了CrylAc毒素与 CmCad-CR6-MPED重组蛋白的结合(图4B)。

稻纵卷叶螟cadherin的CrylAc毒素结合区定位到CmCad-CR6-MPED (G759-L1575)上,而且抗性机制主要是Cry毒素与昆虫BBMV上的受体蛋白结合能力的降低有关,所以当受体发生突变导致结合能力降低时,可以判断昆虫对Cry毒素产生了一定抗性。稻纵卷叶螟cadherin的CrylAc毒素结合区可以在分子水平检测该虫种是否产生了抗性成为可能。

另外,本申请明确了稻纵卷叶螟cadherin与CrylAc毒素发生结合的区域,如果某种Bt蛋白与该结合区具有高度亲和力,必然会插入入稻纵卷叶螟中肠 BBMV上,使上皮细胞膜形成孔洞致死,利用这种方法可以快速筛选或改造对稻纵卷叶螟具有高毒力的Bt杀虫蛋白。

序列表

<110> 江苏省农业科学院

<120> 稻纵卷叶螟钙粘蛋白Cry毒素结合区编码基因及其编码蛋白与应用

<141> 2021-06-22

<160> 15

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gacggacccc tctacaacag agtacgctac accatagttc ctcgcaatga cacgccagtt 180

gggttggtga agatagactt caacaacggg cagatcgcgg tggatgagga cggcgccatc 240

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aacgtgacgg tgtacgtgtg ggagaacgcc acgacaggcg acgaggtggt gcagctctac 480

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gtgaacgctc ggctgcggcc gttcttctcg gtggaccagg actcggggct ggtggtggtg 600

gactacacca cggacgaggt gctggaccgc gacggcgacg agcccaaaca caccatcttc 660

ctcaacttca tcgacaactt ccactcggaa ggagatggaa gacgaaatca gtatgatacg 720

caagtggaag tgatcctcct ggatgtgaac gacaacgctc cagaaatgcc ctcgccagaa 780

gaacttttct gggataatgt atccgagaac cttttagagg gtgtgagact atcgccgcac 840

atatacgcgc cggaccgcga cgagccggac acggacaact cgcgcgtcgg ataccgcatc 900

ctcgccctgg ccgtcacgga ccggccgggg ctcgacgtgc ccgacctctt caccatggtg 960

cagatccaga acatcacggg cgagctggag accgcgctcc cactgcgggg ctactggggc 1020

acgtaccaga ttcacatcga ggcgttcgac cacggtcatc cccagcagtt ttcagacgag 1080

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gcttctggtc agtttctgga ccgaatccac gccaccgacg aagacggcct acacgccggg 1260

aaagtcacct tccaagtgca aggaaacgag gaagcaacag agtatttcaa cgtggtaaat 1320

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agggaattcc ggataacgat cagggcgaca gatggaggca cagatccagg tccactttca 1440

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tcatcgactc cagttgcttt cattgagggc attgctggca tggagcagag cttccaacta 1560

ccgcaggcag aagatattaa gaacttcgcg tgtacagacg actgtttcaa catatactac 1620

aggattattg acggtaacaa tgaaggcctg ttcagcctgg aaccgtcaac caacgtgatc 1680

cgactggtgc gcgagttgga ccgagaggcc gccgctacac acacaatcat ggtggccgcc 1740

agcaactcgc ccgacgccac caaccagccg ctgcaggcat ccatcctagt cgtcaacatc 1800

aatgtgcgag aagctaaccc ccggccaata ttcgaacgag aactgtacac tgctggcatc 1860

tctacagccg acagcatcgg cagagagcta ctcactgtta aggcgacgca ctcggaagac 1920

gcgacagtga cgtacaccat agaccaggcc agcatgcagg tggacagcag cctggaggcg 1980

gtgcgcgagt cggccttcgc gctcaacgca gccaccggcg cgctggcgct caacatgcag 2040

cccaccgccg ccatgcacgg catgttcgac ttcctcgtcc tggccactga ccctgctaat 2100

gcaaatgaca cgactcaggt gaaggtctac ctcatttcgt ctcttaaccg tgtgaccttc 2160

atattcgtca acacgctgga agaagtggag gcgcacagag atttcatagc gcagacgttc 2220

accgccggat tcagcatgac gtgcaacatc gacgaggtgg tcccgcacag cgacagcaac 2280

ggcgtcgcgc gcgaggacgt gtccgaggtg cgcggccact tcatccgcgg caacgtgccc 2340

gtgctcgcca ccgagatcga ggagctccgc agcgacacgt tgctgctgcg caacatccag 2400

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gccgcgctgt gcctggtgct gctgctcacc ttcttcatca ggacccgcga attgaaccgg 2580

cggctgcaag ctctctcgat gacgaagtac ggctccgtgg actcggggct gaaccgcgtg 2640

gggctcgcgc ccggcaccaa caagcac 2667

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Gln Val Glu Val Ile Leu Leu Asp Val Asn Asp Asn Ala Pro Glu Met

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Pro Ser Pro Glu Glu Leu Phe Trp Asp Asn Val Ser Glu Asn Leu Leu

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Glu Gly Val Arg Leu Ser Pro His Ile Tyr Ala Pro Asp Arg Asp Glu

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Pro Asp Thr Asp Asn Ser Arg Val Gly Tyr Arg Ile Leu Ala Leu Ala

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Val Thr Asp Arg Pro Gly Leu Asp Val Pro Asp Leu Phe Thr Met Val

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Gln Ile Gln Asn Ile Thr Gly Glu Leu Glu Thr Ala Leu Pro Leu Arg

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Gly Tyr Trp Gly Thr Tyr Gln Ile His Ile Glu Ala Phe Asp His Gly

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His Pro Gln Gln Phe Ser Asp Glu Val Tyr Arg Leu Thr Ile Gln Pro

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Tyr Asn Phe His Ser Pro Val Phe Gln Phe Pro Leu His Asp Ser Thr

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Ile Arg Leu Ala Thr Glu Leu Thr Thr Glu Asn Gly Gln Leu Thr Thr

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Ala Ser Gly Gln Phe Leu Asp Arg Ile His Ala Thr Asp Glu Asp Gly

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Leu His Ala Gly Lys Val Thr Phe Gln Val Gln Gly Asn Glu Glu Ala

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Thr Glu Tyr Phe Asn Val Val Asn Ser Pro Asp Gly Asp Asn Thr Gly

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Thr Leu Val Leu Leu Lys Thr Phe Pro Glu Glu Ile Arg Glu Phe Arg

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Ile Thr Ile Arg Ala Thr Asp Gly Gly Thr Asp Pro Gly Pro Leu Ser

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Thr Asp Ser Ala Phe Thr Val Ile Phe Val Pro Ser Arg Gly Asp Pro

485 490 495

Val Phe Asn Met Ser Ser Thr Pro Val Ala Phe Ile Glu Gly Ile Ala

500 505 510

Gly Met Glu Gln Ser Phe Gln Leu Pro Gln Ala Glu Asp Ile Lys Asn

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Phe Ala Cys Thr Asp Asp Cys Phe Asn Ile Tyr Tyr Arg Ile Ile Asp

530 535 540

Gly Asn Asn Glu Gly Leu Phe Ser Leu Glu Pro Ser Thr Asn Val Ile

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Arg Leu Val Arg Glu Leu Asp Arg Glu Ala Ala Ala Thr His Thr Ile

565 570 575

Met Val Ala Ala Ser Asn Ser Pro Asp Ala Thr Asn Gln Pro Leu Gln

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Ala Ser Ile Leu Val Val Asn Ile Asn Val Arg Glu Ala Asn Pro Arg

595 600 605

Pro Ile Phe Glu Arg Glu Leu Tyr Thr Ala Gly Ile Ser Thr Ala Asp

610 615 620

Ser Ile Gly Arg Glu Leu Leu Thr Val Lys Ala Thr His Ser Glu Asp

625 630 635 640

Ala Thr Val Thr Tyr Thr Ile Asp Gln Ala Ser Met Gln Val Asp Ser

645 650 655

Ser Leu Glu Ala Val Arg Glu Ser Ala Phe Ala Leu Asn Ala Ala Thr

660 665 670

Gly Ala Leu Ala Leu Asn Met Gln Pro Thr Ala Ala Met His Gly Met

675 680 685

Phe Asp Phe Leu Val Leu Ala Thr Asp Pro Ala Asn Ala Asn Asp Thr

690 695 700

Thr Gln Val Lys Val Tyr Leu Ile Ser Ser Leu Asn Arg Val Thr Phe

705 710 715 720

Ile Phe Val Asn Thr Leu Glu Glu Val Glu Ala His Arg Asp Phe Ile

725 730 735

Ala Gln Thr Phe Thr Ala Gly Phe Ser Met Thr Cys Asn Ile Asp Glu

740 745 750

Val Val Pro His Ser Asp Ser Asn Gly Val Ala Arg Glu Asp Val Ser

755 760 765

Glu Val Arg Gly His Phe Ile Arg Gly Asn Val Pro Val Leu Ala Thr

770 775 780

Glu Ile Glu Glu Leu Arg Ser Asp Thr Leu Leu Leu Arg Asn Ile Gln

785 790 795 800

His Ser Leu Ser Ala Asn Leu Leu Leu Leu Gln Asp Phe Val Thr Asp

805 810 815

Ala Ser Pro Asp Gly Gly Ala Asp Ser Ala Thr Thr Thr Leu Tyr Val

820 825 830

Leu Ala Ala Leu Ser Ala Leu Leu Ala Ala Leu Cys Leu Val Leu Leu

835 840 845

Leu Thr Phe Phe Ile Arg Thr Arg Glu Leu Asn Arg Arg Leu Gln Ala

850 855 860

Leu Ser Met Thr Lys Tyr Gly Ser Val Asp Ser Gly Leu Asn Arg Val

865 870 875 880

Gly Leu Ala Pro Gly Thr Asn Lys His

885

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<213> 人工序列(Artificial Sequence)

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ggtctggcgg acacaggctc tggtcggt 28

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<213> 人工序列(Artificial Sequence)

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<213> 人工序列(Artificial Sequence)

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<213> 人工序列(Artificial Sequence)

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<213> 人工序列(Artificial Sequence)

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<213> 人工序列(Artificial Sequence)

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ttacatgggg agacaaaaga aaaacataaa aatagatagt gcttgtgata ctttactcgt 60

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aagatggggg ttgacactcg cctcgcagcg gcggtgctgc tccttaccat agctcctgcc 180

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gctgattcta gagaggacct gtgcatggac gaatgggtcg tatccgtgag cacgcaggtc 360

atcttcctgg aagaggagat cgagggagag gtcaccatcg cgcggctcaa ctaccagggt 420

accgagacgc cagagatagg agcgtttctg gcaggcagct tgcccaatct gggtcctgtc 480

atacggcggg ttggcaacga gtggcatctt gtggttactc agagacagga cttcgagaat 540

ccaataatga gggattacat gttccgcctg aacattccgg gagagacgct gtcgccctta 600

gtgtctctgg agatcgtgaa catcgacgac aacccgccca tcatcgaggt gttccaggcg 660

tgccaggttg atgaactagg tgagccccgc gccaccgact gcgtgtacac agtgagagac 720

gcggatgggc agatcagcac cagcgtgatg agcttccggg tggagagcaa ccggcccagc 780

gacgagcaga tcttcgtgat gaagggcgcc aatgtcgaaa acgattggtt caccatgacg 840

atgactgtac atattacgga gccgctcaac tttgaaacca acgcgctgca cgtgtttaac 900

gtcattgcta ctgactctcg gccgaaccac cagacggcgt cgatgatgat ccaggtgcag 960

aacgtggagc accggccgcc gcgctgggtg aacatcttct ccgtgcagca gttcgacgag 1020

aagacggtcc agcagttccc tctgcaggcc atcgatggcg acacggggat cgataaacct 1080

atcgattaca agctcatcaa agacccagca gatgacttct tttccctgga ggtgttgccg 1140

gggggccgca gcggcgccat cctgcacgtg gacaagatcg accgggacac gcttatgcgg 1200

gaagtgtttc aggtcaccat cgttgccttc aagtacgaca acgaggcgtt ctcgacggcg 1260

cgcgaggtgg tgatcatcgt gaacgacatc aacgaccagt ggccgctgcc gctgcagacc 1320

acgccctaca ccatctcgat catggaggag acaccgctca ctctcaactt cgccacacca 1380

ttcggtttcc acgatagaga tttgggtgaa aacgctcaat acaccgtaac cctcgaagat 1440

gactacccgc ccggcgcagc ctccgccttc cagataaacc ccaacgtggg gtaccagcag 1500

cagaccttca tcatgagcac cgtcaaccac tccatgctcg acttcgaagt gccggagttc 1560

caaaccatca gaatcaaggt gattgcaacg gacaataaca acacgaactt cgttggcgtg 1620

gcgacggtgg agatcagtct catcaactgg aacgacgagc tgcccatctt cagtgagagc 1680

tcctacaccg cctccttcaa agagacggtg ggcaagggct tcgccgttgc tacaataccg 1740

gctactgata gggacattga cgatcgagtc gagcacagtt tgatgggcaa cgccggcgag 1800

tacctctcca tcgacaaaga cagcggcgcg atcatcgtgt ccgtcgacga agccttcgat 1860

taccacagac agaatgtact ctttgtacag ataagagcgg acgacacgct cggggagccg 1920

tacaacacag ccacgacgca gctagtgatc cagctggagg acgtcaacaa cacacctccc 1980

actttgcggc tgcctcgcgg cagtccaagc gtcgaagaga acgttcctga tggatacatt 2040

ataacccaag agattcacgc cactgaccct gataccacag caaaacttgt gttcgaaatt 2100

gactgggatt ccacctgggc cactaagcaa ggccgtgaga cacctgaaga agaatttaaa 2160

aattgcgtag aaataaaaac attgtaccag aacccagaac agctgggcac cgcctacgga 2220

cagctggtgg tgagggagat ccgtgacggc gtcaccatcg acttcgagga gttcgaggtg 2280

ctgtacctta ccgtgagggt cagggacctc aacactgaac tccaggatga ttacgatgaa 2340

tccacattca cgctaaggat aatcgacatg aatgacaaca tgccgttgtt tgacgagggc 2400

acgctggagc agaacttgcg cgtgcgcgag gtgtccgcca gcggcgtcgt catcgggtcc 2460

gtgctcgcca ccgacatcga cggacccctc tacaacagag tacgctacac catagttcct 2520

cgcaatgaca cgccagttgg gttggtgaag atagacttca acaacgggca gatcgcggtg 2580

gatgaggacg gcgccatcga cgcggacgtc ccgccgcgcc agtacctgta ctacactgtc 2640

attgccagcg accggtgcta cgagaccgac cagagcctgt gtccgccaga ccctacctac 2700

tgggagacga tggaggatat ccaaatagaa atcctagaca cgaacaacaa ggtacccgaa 2760

gccgactacg agaggttcaa cgtgacggtg tacgtgtggg agaacgccac gacaggcgac 2820

gaggtggtgc agctctactc cagtgacctc gacagagacg aaatatacaa cacggtgcga 2880

tatcagatca actacgcggt gaacgctcgg ctgcggccgt tcttctcggt ggaccaggac 2940

tcggggctgg tggtggtgga ctacaccacg gacgaggtgc tggaccgcga cggcgacgag 3000

cccaaacaca ccatcttcct caacttcatc gacaacttcc actcggaagg agatggaaga 3060

cgaaatcagt atgatacgca agtggaagtg atcctcctgg atgtgaacga caacgctcca 3120

gaaatgccct cgccagaaga acttttctgg gataatgtat ccgagaacct tttagagggt 3180

gtgagactat cgccgcacat atacgcgccg gaccgcgacg agccggacac ggacaactcg 3240

cgcgtcggat accgcatcct cgccctggcc gtcacggacc ggccggggct cgacgtgccc 3300

gacctcttca ccatggtgca gatccagaac atcacgggcg agctggagac cgcgctccca 3360

ctgcggggct actggggcac gtaccagatt cacatcgagg cgttcgacca cggtcatccc 3420

cagcagtttt cagacgaggt ttacaggctc acgatccaac cgtacaactt ccattcgccg 3480

gtattccagt ttcctctaca cgactccacc atcagacttg cgacggagct tacaacagag 3540

aatggacagc tgacgaccgc ttctggtcag tttctggacc gaatccacgc caccgacgaa 3600

gacggcctac acgccgggaa agtcaccttc caagtgcaag gaaacgagga agcaacagag 3660

tatttcaacg tggtaaatag tccagatggt gacaatactg gaacccttgt tctgttgaag 3720

acattcccag aagagatcag ggaattccgg ataacgatca gggcgacaga tggaggcaca 3780

gatccaggtc cactttcaac ggattccgcc ttcacggtta tattcgtgcc ttcgcgagga 3840

gatccggtct tcaatatgtc atcgactcca gttgctttca ttgagggcat tgctggcatg 3900

gagcagagct tccaactacc gcaggcagaa gatattaaga acttcgcgtg tacagacgac 3960

tgtttcaaca tatactacag gattattgac ggtaacaatg aaggcctgtt cagcctggaa 4020

ccgtcaacca acgtgatccg actggtgcgc gagttggacc gagaggccgc cgctacacac 4080

acaatcatgg tggccgccag caactcgccc gacgccacca accagccgct gcaggcatcc 4140

atcctagtcg tcaacatcaa tgtgcgagaa gctaaccccc ggccaatatt cgaacgagaa 4200

ctgtacactg ctggcatctc tacagccgac agcatcggca gagagctact cactgttaag 4260

gcgacgcact cggaagacgc gacagtgacg tacaccatag accaggccag catgcaggtg 4320

gacagcagcc tggaggcggt gcgcgagtcg gccttcgcgc tcaacgcagc caccggcgcg 4380

ctggcgctca acatgcagcc caccgccgcc atgcacggca tgttcgactt cctcgtcctg 4440

gccactgacc ctgctaatgc aaatgacacg actcaggtga aggtctacct catttcgtct 4500

cttaaccgtg tgaccttcat attcgtcaac acgctggaag aagtggaggc gcacagagat 4560

ttcatagcgc agacgttcac cgccggattc agcatgacgt gcaacatcga cgaggtggtc 4620

ccgcacagcg acagcaacgg cgtcgcgcgc gaggacgtgt ccgaggtgcg cggccacttc 4680

atccgcggca acgtgcccgt gctcgccacc gagatcgagg agctccgcag cgacacgttg 4740

ctgctgcgca acatccagca cagcctgagc gccaacctgc tgctgctgca ggactttgtg 4800

acggacgcca gccccgacgg cggcgccgac tccgccacca ccacgctgta cgtgctcgcc 4860

gcgctgtccg cgctgctggc cgcgctgtgc ctggtgctgc tgctcacctt cttcatcagg 4920

acccgcgaat tgaaccggcg gctgcaagct ctctcgatga cgaagtacgg ctccgtggac 4980

tcggggctga accgcgtggg gctcgcgccc ggcaccaaca agcacgccgt cgagggctcc 5040

aaccccatct ggaatgaagc catcaaagct ccagacttcg acgccatcag tgacttgagt 5100

ggggactcag acctgatcgg catcgaggac ttgccgcagt tccgcgagga ctacttcccg 5160

cccgcggaca ccaactccgc gactctcatt gcagtccatc caaggggggg agacgaaggc 5220

ctcgccaccc acgaaaacaa cttcggcttc aacaccagcc ccttcagcca ggacttcacc 5280

aacaaacaat ttaacagatg aagaagctcc atactcttaa tcatgttgat tgaagatatt 5340

attaaataaa tatctatgta tgtaaatatt gtaccatatt tgtgtttaat ttattagatt 5400

tgtattaatt aaagtaactt tatttttgaa aaaaaaaaaa aaaaaaaaaa aaaaa 5455

<210> 11

<211> 1725

<212> PRT

<213> 人工序列(Artificial Sequence)

<400> 11

Met Gly Val Asp Thr Arg Leu Ala Ala Ala Val Leu Leu Leu Thr Ile

1 5 10 15

Ala Pro Ala Val Phe Thr Gln Glu Arg Pro Ser Cys Thr Tyr Met Val

20 25 30

Gln Ile Pro Arg Pro Asp Thr Pro Val Phe Pro Asp Gln Asp Phe Thr

35 40 45

Gly Val Thr Trp Ser Gln Arg Pro Leu Ile Pro Ala Asp Ser Arg Glu

50 55 60

Asp Leu Cys Met Asp Glu Trp Val Val Ser Val Ser Thr Gln Val Ile

65 70 75 80

Phe Leu Glu Glu Glu Ile Glu Gly Glu Val Thr Ile Ala Arg Leu Asn

85 90 95

Tyr Gln Gly Thr Glu Thr Pro Glu Ile Gly Ala Phe Leu Ala Gly Ser

100 105 110

Leu Pro Asn Leu Gly Pro Val Ile Arg Arg Val Gly Asn Glu Trp His

115 120 125

Leu Val Val Thr Gln Arg Gln Asp Phe Glu Asn Pro Ile Met Arg Asp

130 135 140

Tyr Met Phe Arg Leu Asn Ile Pro Gly Glu Thr Leu Ser Pro Leu Val

145 150 155 160

Ser Leu Glu Ile Val Asn Ile Asp Asp Asn Pro Pro Ile Ile Glu Val

165 170 175

Phe Gln Ala Cys Gln Val Asp Glu Leu Gly Glu Pro Arg Ala Thr Asp

180 185 190

Cys Val Tyr Thr Val Arg Asp Ala Asp Gly Gln Ile Ser Thr Ser Val

195 200 205

Met Ser Phe Arg Val Glu Ser Asn Arg Pro Ser Asp Glu Gln Ile Phe

210 215 220

Val Met Lys Gly Ala Asn Val Glu Asn Asp Trp Phe Thr Met Thr Met

225 230 235 240

Thr Val His Ile Thr Glu Pro Leu Asn Phe Glu Thr Asn Ala Leu His

245 250 255

Val Phe Asn Val Ile Ala Thr Asp Ser Arg Pro Asn His Gln Thr Ala

260 265 270

Ser Met Met Ile Gln Val Gln Asn Val Glu His Arg Pro Pro Arg Trp

275 280 285

Val Asn Ile Phe Ser Val Gln Gln Phe Asp Glu Lys Thr Val Gln Gln

290 295 300

Phe Pro Leu Gln Ala Ile Asp Gly Asp Thr Gly Ile Asp Lys Pro Ile

305 310 315 320

Asp Tyr Lys Leu Ile Lys Asp Pro Ala Asp Asp Phe Phe Ser Leu Glu

325 330 335

Val Leu Pro Gly Gly Arg Ser Gly Ala Ile Leu His Val Asp Lys Ile

340 345 350

Asp Arg Asp Thr Leu Met Arg Glu Val Phe Gln Val Thr Ile Val Ala

355 360 365

Phe Lys Tyr Asp Asn Glu Ala Phe Ser Thr Ala Arg Glu Val Val Ile

370 375 380

Ile Val Asn Asp Ile Asn Asp Gln Trp Pro Leu Pro Leu Gln Thr Thr

385 390 395 400

Pro Tyr Thr Ile Ser Ile Met Glu Glu Thr Pro Leu Thr Leu Asn Phe

405 410 415

Ala Thr Pro Phe Gly Phe His Asp Arg Asp Leu Gly Glu Asn Ala Gln

420 425 430

Tyr Thr Val Thr Leu Glu Asp Asp Tyr Pro Pro Gly Ala Ala Ser Ala

435 440 445

Phe Gln Ile Asn Pro Asn Val Gly Tyr Gln Gln Gln Thr Phe Ile Met

450 455 460

Ser Thr Val Asn His Ser Met Leu Asp Phe Glu Val Pro Glu Phe Gln

465 470 475 480

Thr Ile Arg Ile Lys Val Ile Ala Thr Asp Asn Asn Asn Thr Asn Phe

485 490 495

Val Gly Val Ala Thr Val Glu Ile Ser Leu Ile Asn Trp Asn Asp Glu

500 505 510

Leu Pro Ile Phe Ser Glu Ser Ser Tyr Thr Ala Ser Phe Lys Glu Thr

515 520 525

Val Gly Lys Gly Phe Ala Val Ala Thr Ile Pro Ala Thr Asp Arg Asp

530 535 540

Ile Asp Asp Arg Val Glu His Ser Leu Met Gly Asn Ala Gly Glu Tyr

545 550 555 560

Leu Ser Ile Asp Lys Asp Ser Gly Ala Ile Ile Val Ser Val Asp Glu

565 570 575

Ala Phe Asp Tyr His Arg Gln Asn Val Leu Phe Val Gln Ile Arg Ala

580 585 590

Asp Asp Thr Leu Gly Glu Pro Tyr Asn Thr Ala Thr Thr Gln Leu Val

595 600 605

Ile Gln Leu Glu Asp Val Asn Asn Thr Pro Pro Thr Leu Arg Leu Pro

610 615 620

Arg Gly Ser Pro Ser Val Glu Glu Asn Val Pro Asp Gly Tyr Ile Ile

625 630 635 640

Thr Gln Glu Ile His Ala Thr Asp Pro Asp Thr Thr Ala Lys Leu Val

645 650 655

Phe Glu Ile Asp Trp Asp Ser Thr Trp Ala Thr Lys Gln Gly Arg Glu

660 665 670

Thr Pro Glu Glu Glu Phe Lys Asn Cys Val Glu Ile Lys Thr Leu Tyr

675 680 685

Gln Asn Pro Glu Gln Leu Gly Thr Ala Tyr Gly Gln Leu Val Val Arg

690 695 700

Glu Ile Arg Asp Gly Val Thr Ile Asp Phe Glu Glu Phe Glu Val Leu

705 710 715 720

Tyr Leu Thr Val Arg Val Arg Asp Leu Asn Thr Glu Leu Gln Asp Asp

725 730 735

Tyr Asp Glu Ser Thr Phe Thr Leu Arg Ile Ile Asp Met Asn Asp Asn

740 745 750

Met Pro Leu Phe Asp Glu Gly Thr Leu Glu Gln Asn Leu Arg Val Arg

755 760 765

Glu Val Ser Ala Ser Gly Val Val Ile Gly Ser Val Leu Ala Thr Asp

770 775 780

Ile Asp Gly Pro Leu Tyr Asn Arg Val Arg Tyr Thr Ile Val Pro Arg

785 790 795 800

Asn Asp Thr Pro Val Gly Leu Val Lys Ile Asp Phe Asn Asn Gly Gln

805 810 815

Ile Ala Val Asp Glu Asp Gly Ala Ile Asp Ala Asp Val Pro Pro Arg

820 825 830

Gln Tyr Leu Tyr Tyr Thr Val Ile Ala Ser Asp Arg Cys Tyr Glu Thr

835 840 845

Asp Gln Ser Leu Cys Pro Pro Asp Pro Thr Tyr Trp Glu Thr Met Glu

850 855 860

Asp Ile Gln Ile Glu Ile Leu Asp Thr Asn Asn Lys Val Pro Glu Ala

865 870 875 880

Asp Tyr Glu Arg Phe Asn Val Thr Val Tyr Val Trp Glu Asn Ala Thr

885 890 895

Thr Gly Asp Glu Val Val Gln Leu Tyr Ser Ser Asp Leu Asp Arg Asp

900 905 910

Glu Ile Tyr Asn Thr Val Arg Tyr Gln Ile Asn Tyr Ala Val Asn Ala

915 920 925

Arg Leu Arg Pro Phe Phe Ser Val Asp Gln Asp Ser Gly Leu Val Val

930 935 940

Val Asp Tyr Thr Thr Asp Glu Val Leu Asp Arg Asp Gly Asp Glu Pro

945 950 955 960

Lys His Thr Ile Phe Leu Asn Phe Ile Asp Asn Phe His Ser Glu Gly

965 970 975

Asp Gly Arg Arg Asn Gln Tyr Asp Thr Gln Val Glu Val Ile Leu Leu

980 985 990

Asp Val Asn Asp Asn Ala Pro Glu Met Pro Ser Pro Glu Glu Leu Phe

995 1000 1005

Trp Asp Asn Val Ser Glu Asn Leu Leu Glu Gly Val Arg Leu Ser Pro

1010 1015 1020

His Ile Tyr Ala Pro Asp Arg Asp Glu Pro Asp Thr Asp Asn Ser Arg

1025 1030 1035 1040

Val Gly Tyr Arg Ile Leu Ala Leu Ala Val Thr Asp Arg Pro Gly Leu

1045 1050 1055

Asp Val Pro Asp Leu Phe Thr Met Val Gln Ile Gln Asn Ile Thr Gly

1060 1065 1070

Glu Leu Glu Thr Ala Leu Pro Leu Arg Gly Tyr Trp Gly Thr Tyr Gln

1075 1080 1085

Ile His Ile Glu Ala Phe Asp His Gly His Pro Gln Gln Phe Ser Asp

1090 1095 1100

Glu Val Tyr Arg Leu Thr Ile Gln Pro Tyr Asn Phe His Ser Pro Val

1105 1110 1115 1120

Phe Gln Phe Pro Leu His Asp Ser Thr Ile Arg Leu Ala Thr Glu Leu

1125 1130 1135

Thr Thr Glu Asn Gly Gln Leu Thr Thr Ala Ser Gly Gln Phe Leu Asp

1140 1145 1150

Arg Ile His Ala Thr Asp Glu Asp Gly Leu His Ala Gly Lys Val Thr

1155 1160 1165

Phe Gln Val Gln Gly Asn Glu Glu Ala Thr Glu Tyr Phe Asn Val Val

1170 1175 1180

Asn Ser Pro Asp Gly Asp Asn Thr Gly Thr Leu Val Leu Leu Lys Thr

1185 1190 1195 1200

Phe Pro Glu Glu Ile Arg Glu Phe Arg Ile Thr Ile Arg Ala Thr Asp

1205 1210 1215

Gly Gly Thr Asp Pro Gly Pro Leu Ser Thr Asp Ser Ala Phe Thr Val

1220 1225 1230

Ile Phe Val Pro Ser Arg Gly Asp Pro Val Phe Asn Met Ser Ser Thr

1235 1240 1245

Pro Val Ala Phe Ile Glu Gly Ile Ala Gly Met Glu Gln Ser Phe Gln

1250 1255 1260

Leu Pro Gln Ala Glu Asp Ile Lys Asn Phe Ala Cys Thr Asp Asp Cys

1265 1270 1275 1280

Phe Asn Ile Tyr Tyr Arg Ile Ile Asp Gly Asn Asn Glu Gly Leu Phe

1285 1290 1295

Ser Leu Glu Pro Ser Thr Asn Val Ile Arg Leu Val Arg Glu Leu Asp

1300 1305 1310

Arg Glu Ala Ala Ala Thr His Thr Ile Met Val Ala Ala Ser Asn Ser

1315 1320 1325

Pro Asp Ala Thr Asn Gln Pro Leu Gln Ala Ser Ile Leu Val Val Asn

1330 1335 1340

Ile Asn Val Arg Glu Ala Asn Pro Arg Pro Ile Phe Glu Arg Glu Leu

1345 1350 1355 1360

Tyr Thr Ala Gly Ile Ser Thr Ala Asp Ser Ile Gly Arg Glu Leu Leu

1365 1370 1375

Thr Val Lys Ala Thr His Ser Glu Asp Ala Thr Val Thr Tyr Thr Ile

1380 1385 1390

Asp Gln Ala Ser Met Gln Val Asp Ser Ser Leu Glu Ala Val Arg Glu

1395 1400 1405

Ser Ala Phe Ala Leu Asn Ala Ala Thr Gly Ala Leu Ala Leu Asn Met

1410 1415 1420

Gln Pro Thr Ala Ala Met His Gly Met Phe Asp Phe Leu Val Leu Ala

1425 1430 1435 1440

Thr Asp Pro Ala Asn Ala Asn Asp Thr Thr Gln Val Lys Val Tyr Leu

1445 1450 1455

Ile Ser Ser Leu Asn Arg Val Thr Phe Ile Phe Val Asn Thr Leu Glu

1460 1465 1470

Glu Val Glu Ala His Arg Asp Phe Ile Ala Gln Thr Phe Thr Ala Gly

1475 1480 1485

Phe Ser Met Thr Cys Asn Ile Asp Glu Val Val Pro His Ser Asp Ser

1490 1495 1500

Asn Gly Val Ala Arg Glu Asp Val Ser Glu Val Arg Gly His Phe Ile

1505 1510 1515 1520

Arg Gly Asn Val Pro Val Leu Ala Thr Glu Ile Glu Glu Leu Arg Ser

1525 1530 1535

Asp Thr Leu Leu Leu Arg Asn Ile Gln His Ser Leu Ser Ala Asn Leu

1540 1545 1550

Leu Leu Leu Gln Asp Phe Val Thr Asp Ala Ser Pro Asp Gly Gly Ala

1555 1560 1565

Asp Ser Ala Thr Thr Thr Leu Tyr Val Leu Ala Ala Leu Ser Ala Leu

1570 1575 1580

Leu Ala Ala Leu Cys Leu Val Leu Leu Leu Thr Phe Phe Ile Arg Thr

1585 1590 1595 1600

Arg Glu Leu Asn Arg Arg Leu Gln Ala Leu Ser Met Thr Lys Tyr Gly

1605 1610 1615

Ser Val Asp Ser Gly Leu Asn Arg Val Gly Leu Ala Pro Gly Thr Asn

1620 1625 1630

Lys His Ala Val Glu Gly Ser Asn Pro Ile Trp Asn Glu Ala Ile Lys

1635 1640 1645

Ala Pro Asp Phe Asp Ala Ile Ser Asp Leu Ser Gly Asp Ser Asp Leu

1650 1655 1660

Ile Gly Ile Glu Asp Leu Pro Gln Phe Arg Glu Asp Tyr Phe Pro Pro

1665 1670 1675 1680

Ala Asp Thr Asn Ser Ala Thr Leu Ile Ala Val His Pro Arg Gly Gly

1685 1690 1695

Asp Glu Gly Leu Ala Thr His Glu Asn Asn Phe Gly Phe Asn Thr Ser

1700 1705 1710

Pro Phe Ser Gln Asp Phe Thr Asn Lys Gln Phe Asn Arg

1715 1720 1725

<210> 12

<211> 20

<212> DNA

<213> 人工序列(Artificial Sequence)

<400> 12

ggcacgctgg agcagaactt 20

<210> 13

<211> 20

<212> DNA

<213> 人工序列(Artificial Sequence)

<400> 13

cagcgtggtg gtggcggagt 20

<210> 14

<211> 2451

<212> DNA

<213> 人工序列(Artificial Sequence)

<400> 14

ggcacgctgg agcagaactt gcgcgtgcgc gaggtgtccg ccagcggcgt cgtcatcggg 60

tccgtgctcg ccaccgacat cgacggaccc ctctacaaca gagtacgcta caccatagtt 120

cctcgcaatg acacgccagt tgggttggtg aagatagact tcaacaacgg gcagatcgcg 180

gtggatgagg acggcgccat cgacgcggac gtcccgccgc gccagtacct gtactacact 240

gtcattgcca gcgaccggtg ctacgagacc gaccagagcc tgtgtccgcc agaccctacc 300

tactgggaga cgatggagga tatccaaata gaaatcctag acacgaacaa caaggtaccc 360

gaagccgact acgagaggtt caacgtgacg gtgtacgtgt gggagaacgc cacgacaggc 420

gacgaggtgg tgcagctcta ctccagtgac ctcgacagag acgaaatata caacacggtg 480

cgatatcaga tcaactacgc ggtgaacgct cggctgcggc cgttcttctc ggtggaccag 540

gactcggggc tggtggtggt ggactacacc acggacgagg tgctggaccg cgacggcgac 600

gagcccaaac acaccatctt cctcaacttc atcgacaact tccactcgga aggagatgga 660

agacgaaatc agtatgatac gcaagtggaa gtgatcctcc tggatgtgaa cgacaacgct 720

ccagaaatgc cctcgccaga agaacttttc tgggataatg tatccgagaa ccttttagag 780

ggtgtgagac tatcgccgca catatacgcg ccggaccgcg acgagccgga cacggacaac 840

tcgcgcgtcg gataccgcat cctcgccctg gccgtcacgg accggccggg gctcgacgtg 900

cccgacctct tcaccatggt gcagatccag aacatcacgg gcgagctgga gaccgcgctc 960

ccactgcggg gctactgggg cacgtaccag attcacatcg aggcgttcga ccacggtcat 1020

ccccagcagt tttcagacga ggtttacagg ctcacgatcc aaccgtacaa cttccattcg 1080

ccggtattcc agtttcctct acacgactcc accatcagac ttgcgacgga gcttacaaca 1140

gagaatggac agctgacgac cgcttctggt cagtttctgg accgaatcca cgccaccgac 1200

gaagacggcc tacacgccgg gaaagtcacc ttccaagtgc aaggaaacga ggaagcaaca 1260

gagtatttca acgtggtaaa tagtccagat ggtgacaata ctggaaccct tgttctgttg 1320

aagacattcc cagaagagat cagggaattc cggataacga tcagggcgac agatggaggc 1380

acagatccag gtccactttc aacggattcc gccttcacgg ttatattcgt gccttcgcga 1440

ggagatccgg tcttcaatat gtcatcgact ccagttgctt tcattgaggg cattgctggc 1500

atggagcaga gcttccaact accgcaggca gaagatatta agaacttcgc gtgtacagac 1560

gactgtttca acatatacta caggattatt gacggtaaca atgaaggcct gttcagcctg 1620

gaaccgtcaa ccaacgtgat ccgactggtg cgcgagttgg accgagaggc cgccgctaca 1680

cacacaatca tggtggccgc cagcaactcg cccgacgcca ccaaccagcc gctgcaggca 1740

tccatcctag tcgtcaacat caatgtgcga gaagctaacc cccggccaat attcgaacga 1800

gaactgtaca ctgctggcat ctctacagcc gacagcatcg gcagagagct actcactgtt 1860

aaggcgacgc actcggaaga cgcgacagtg acgtacacca tagaccaggc cagcatgcag 1920

gtggacagca gcctggaggc ggtgcgcgag tcggccttcg cgctcaacgc agccaccggc 1980

gcgctggcgc tcaacatgca gcccaccgcc gccatgcacg gcatgttcga cttcctcgtc 2040

ctggccactg accctgctaa tgcaaatgac acgactcagg tgaaggtcta cctcatttcg 2100

tctcttaacc gtgtgacctt catattcgtc aacacgctgg aagaagtgga ggcgcacaga 2160

gatttcatag cgcagacgtt caccgccgga ttcagcatga cgtgcaacat cgacgaggtg 2220

gtcccgcaca gcgacagcaa cggcgtcgcg cgcgaggacg tgtccgaggt gcgcggccac 2280

ttcatccgcg gcaacgtgcc cgtgctcgcc accgagatcg aggagctccg cagcgacacg 2340

ttgctgctgc gcaacatcca gcacagcctg agcgccaacc tgctgctgct gcaggacttt 2400

gtgacggacg ccagccccga cggcggcgcc gactccgcca ccaccacgct g 2451

<210> 15

<211> 817

<212> PRT

<213> 人工序列(Artificial Sequence)

<400> 15

Gly Thr Leu Glu Gln Asn Leu Arg Val Arg Glu Val Ser Ala Ser Gly

1 5 10 15

Val Val Ile Gly Ser Val Leu Ala Thr Asp Ile Asp Gly Pro Leu Tyr

20 25 30

Asn Arg Val Arg Tyr Thr Ile Val Pro Arg Asn Asp Thr Pro Val Gly

35 40 45

Leu Val Lys Ile Asp Phe Asn Asn Gly Gln Ile Ala Val Asp Glu Asp

50 55 60

Gly Ala Ile Asp Ala Asp Val Pro Pro Arg Gln Tyr Leu Tyr Tyr Thr

65 70 75 80

Val Ile Ala Ser Asp Arg Cys Tyr Glu Thr Asp Gln Ser Leu Cys Pro

85 90 95

Pro Asp Pro Thr Tyr Trp Glu Thr Met Glu Asp Ile Gln Ile Glu Ile

100 105 110

Leu Asp Thr Asn Asn Lys Val Pro Glu Ala Asp Tyr Glu Arg Phe Asn

115 120 125

Val Thr Val Tyr Val Trp Glu Asn Ala Thr Thr Gly Asp Glu Val Val

130 135 140

Gln Leu Tyr Ser Ser Asp Leu Asp Arg Asp Glu Ile Tyr Asn Thr Val

145 150 155 160

Arg Tyr Gln Ile Asn Tyr Ala Val Asn Ala Arg Leu Arg Pro Phe Phe

165 170 175

Ser Val Asp Gln Asp Ser Gly Leu Val Val Val Asp Tyr Thr Thr Asp

180 185 190

Glu Val Leu Asp Arg Asp Gly Asp Glu Pro Lys His Thr Ile Phe Leu

195 200 205

Asn Phe Ile Asp Asn Phe His Ser Glu Gly Asp Gly Arg Arg Asn Gln

210 215 220

Tyr Asp Thr Gln Val Glu Val Ile Leu Leu Asp Val Asn Asp Asn Ala

225 230 235 240

Pro Glu Met Pro Ser Pro Glu Glu Leu Phe Trp Asp Asn Val Ser Glu

245 250 255

Asn Leu Leu Glu Gly Val Arg Leu Ser Pro His Ile Tyr Ala Pro Asp

260 265 270

Arg Asp Glu Pro Asp Thr Asp Asn Ser Arg Val Gly Tyr Arg Ile Leu

275 280 285

Ala Leu Ala Val Thr Asp Arg Pro Gly Leu Asp Val Pro Asp Leu Phe

290 295 300

Thr Met Val Gln Ile Gln Asn Ile Thr Gly Glu Leu Glu Thr Ala Leu

305 310 315 320

Pro Leu Arg Gly Tyr Trp Gly Thr Tyr Gln Ile His Ile Glu Ala Phe

325 330 335

Asp His Gly His Pro Gln Gln Phe Ser Asp Glu Val Tyr Arg Leu Thr

340 345 350

Ile Gln Pro Tyr Asn Phe His Ser Pro Val Phe Gln Phe Pro Leu His

355 360 365

Asp Ser Thr Ile Arg Leu Ala Thr Glu Leu Thr Thr Glu Asn Gly Gln

370 375 380

Leu Thr Thr Ala Ser Gly Gln Phe Leu Asp Arg Ile His Ala Thr Asp

385 390 395 400

Glu Asp Gly Leu His Ala Gly Lys Val Thr Phe Gln Val Gln Gly Asn

405 410 415

Glu Glu Ala Thr Glu Tyr Phe Asn Val Val Asn Ser Pro Asp Gly Asp

420 425 430

Asn Thr Gly Thr Leu Val Leu Leu Lys Thr Phe Pro Glu Glu Ile Arg

435 440 445

Glu Phe Arg Ile Thr Ile Arg Ala Thr Asp Gly Gly Thr Asp Pro Gly

450 455 460

Pro Leu Ser Thr Asp Ser Ala Phe Thr Val Ile Phe Val Pro Ser Arg

465 470 475 480

Gly Asp Pro Val Phe Asn Met Ser Ser Thr Pro Val Ala Phe Ile Glu

485 490 495

Gly Ile Ala Gly Met Glu Gln Ser Phe Gln Leu Pro Gln Ala Glu Asp

500 505 510

Ile Lys Asn Phe Ala Cys Thr Asp Asp Cys Phe Asn Ile Tyr Tyr Arg

515 520 525

Ile Ile Asp Gly Asn Asn Glu Gly Leu Phe Ser Leu Glu Pro Ser Thr

530 535 540

Asn Val Ile Arg Leu Val Arg Glu Leu Asp Arg Glu Ala Ala Ala Thr

545 550 555 560

His Thr Ile Met Val Ala Ala Ser Asn Ser Pro Asp Ala Thr Asn Gln

565 570 575

Pro Leu Gln Ala Ser Ile Leu Val Val Asn Ile Asn Val Arg Glu Ala

580 585 590

Asn Pro Arg Pro Ile Phe Glu Arg Glu Leu Tyr Thr Ala Gly Ile Ser

595 600 605

Thr Ala Asp Ser Ile Gly Arg Glu Leu Leu Thr Val Lys Ala Thr His

610 615 620

Ser Glu Asp Ala Thr Val Thr Tyr Thr Ile Asp Gln Ala Ser Met Gln

625 630 635 640

Val Asp Ser Ser Leu Glu Ala Val Arg Glu Ser Ala Phe Ala Leu Asn

645 650 655

Ala Ala Thr Gly Ala Leu Ala Leu Asn Met Gln Pro Thr Ala Ala Met

660 665 670

His Gly Met Phe Asp Phe Leu Val Leu Ala Thr Asp Pro Ala Asn Ala

675 680 685

Asn Asp Thr Thr Gln Val Lys Val Tyr Leu Ile Ser Ser Leu Asn Arg

690 695 700

Val Thr Phe Ile Phe Val Asn Thr Leu Glu Glu Val Glu Ala His Arg

705 710 715 720

Asp Phe Ile Ala Gln Thr Phe Thr Ala Gly Phe Ser Met Thr Cys Asn

725 730 735

Ile Asp Glu Val Val Pro His Ser Asp Ser Asn Gly Val Ala Arg Glu

740 745 750

Asp Val Ser Glu Val Arg Gly His Phe Ile Arg Gly Asn Val Pro Val

755 760 765

Leu Ala Thr Glu Ile Glu Glu Leu Arg Ser Asp Thr Leu Leu Leu Arg

770 775 780

Asn Ile Gln His Ser Leu Ser Ala Asn Leu Leu Leu Leu Gln Asp Phe

785 790 795 800

Val Thr Asp Ala Ser Pro Asp Gly Gly Ala Asp Ser Ala Thr Thr Thr

805 810 815

Leu

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