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Position: Home > Articles > Bioinformatic and expression analysis of a cathepsin gene Bmcath1 in Bursaphelechus mucronatus Journal of Nanjing Forestry University(Natural Sciences Edition) 2015,39 (6) 12-16

拟松材线虫组织蛋白酶基因Bmcath1的序列分析与转录水平检测

作  者:
潘妍毅;黄麟;吴小芹
单  位:
南京林业大学南方现代林业协同创新中心
关键词:
拟松材线虫;组织蛋白酶;系统发育树;表达谱分析
摘  要:
拟松材线虫组织蛋白酶基因Bmcath1是一个在松材线虫与拟松材线虫中差异表达的基因,为了解该基因的生物学功能,对Bmcath1基因进行了生物信息学分析。笔者使用BioEdit、SignalP 4.1、BLASTP、MEGA 4.0等软件对Bmcath1基因进行了生物信息学分析,发现Bmcath1 cDNA序列全长1 294 bp,含有一个长度为1 158 bp的开放阅读框。由Bmcath1基因编码的蛋白质CATH1含有386个氨基酸,分子质量为4238 ku,等电点为8.52。蛋白质CATH1存在一个Peptidase_C1A subfamily功能域结构,在不同物种上的氨基酸序列多样性丰富。采用Real-Time PCR方法对不同培养方式获得的拟松材线虫中Bmcath1基因的表达量进行检测,发现该基因在分离自黑松的拟松材线虫中高量表达,据此推测拟松材线虫Bmcath1基因可能在线虫处于松树体内生长、繁殖时发挥更为重要的作用。
译  名:
Bioinformatic and expression analysis of a cathepsin gene Bmcath1 in Bursaphelechus mucronatus
作  者:
PAN Yanyi;HUANG Lin;WU Xiaoqin;Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University;Jiangsu Key Laboratory for Prevention and Management of Invasive Species,College of Forestry, Nanjing Forestry University;
关键词:
Bursaphelenchus mucronatus;;cathepsin;;phylogenetic tree;;gene expression profiling
摘  要:
Cathepsin geneBmcath1 ofBursaphelenchus mucronatusis differentially expressed betweenB. xylophilusandB. mucronatus. In order to understand its biological function, bioinformational analysis was conducted using software Bi-oEdit, SignalP 4.1, BLASTP and MEGA 4. 0. The result showed that the full-length cDNA ofBmcath1 was 1 294 bplong, which included an ORF of 1 158 bp. The deduced amino sequence of CATH1 contained 386 amino acids with mo-lecular mass of 42.38 ku and pI of 8.52. Protein CATH1 contained a Peptidase-C1 A conserved domain. The amino se-quences of cathepsins varied between different species. With the method of real-time PCR, gene expression profilingshowed thatBmcath1 expressed much more inB. mucronatusseparated fromPinus thunbergiiseedlings comparing withexpression level ofBmcath1 in monoxenic culture nematodes. The result suggested that function ofBmcath1 may be relat-ed to infection process ofB. mucronatus.

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