Cloning and sequence analysis of two isotypic IgM heavy chain genes from Atlantic salmon, Salmo salar L

Cloning and sequence analysis of two isotypic IgM heavy chain genes from Atlantic salmon, Salmo salar L
复制标题

大西洋鲑鱼 Salmo salar L 两个同型 IgM 重链基因的克隆和序列分析

DOI:
--
复制
发表时间:
1992
影响因子:
5.4
通讯作者:
C. Endresen
C. Endresen
中科院分区:
医学3区
文献类型:
--
作者:
I. Hordvik;A. M. Voie;J. Glette;R. Male;C. Endresen

文献摘要

参考文献

被引文献

相似文献

在λ‐gt10中构建了大西洋鲑鱼白细胞cDNA文库。利用聚合酶链反应(PCR)在可变区(第二和第四帧区)的两个保守区之间产生的特异性探针,从文库中分离出免疫球蛋白重链(IgH) cDNA。对两个编码膜结合IgH整个恒定区域的cDNA克隆和一个编码分泌性IgH整个恒定区域的cDNA克隆进行测序,揭示了来自两个同型IgM基因的信息。这两个基因都存在于单倍体胚胎中,并从基因组文库中分离出来,其外显子和推断的氨基酸序列在这里(鲑鱼CHA和CHB)。与其他硬骨鱼一样,编码膜结合的IgH的转录本剪接会切除整个第4外显子。三文鱼CHA和CHB的核苷酸和氨基酸同源性分别为98.2%和96.2%。离子色谱法从大西洋鲑鱼中分离出IgM的两个亚组分,可以用鲑鱼CHB中与CHA相比的碱性残基的净交换来解释。这两个密切相关的鲑鱼CH基因的发现符合大西洋鲑鱼基因组的准四倍体状态。
A leukocyte cDNA library from Atlantic salmon, based on oligo‐dT priming, was constructed in λ‐gt10. Immunoglobulin heavy chain (IgH) cDNA were isolated from the library using a specific probe generated by polymerase chain reaction (PCR) between two conserved areas within the variable region (second and fourth frame region). Two cDNA clones encoding the entire constant region of membrane‐bound IgH, and one cDNA encoding the entire constant region of secretory IgH were sequenced, revealing messages from two isotypic IgM genes. Both genes were shown to be present in haploid embryos and have been isolated from a genomic library, the exons and deduced amino acid sequences of which are presented here (salmon CHA and CHB). The splicing of transcripts encoding the membrane‐bound IgH excises the whole fourth exon as in other teleosts. The nucleotide and amino acid identity between salmon CHA and CHB are 98.2 %, and 96.2%, respectively. Two subfractions of IgM from Atlantic salmon separated by ion chromatography can be explained by a net exchange of basic residues in salmon CHB compared to CHA. The finding of two closely related salmon CH genes is in accordance with the quasi‐tetraploid state of the Atlantic salmon genome.
DOI: --
发表时间: 1991
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Ghaffari,SH;Lobb,CJ
通讯作者: Lobb,CJ
斑点叉尾鮰重链 cDNA 的克隆和序列分析表明 IgM 免疫球蛋白家族内的系统发育多样性。
DOI: --
发表时间: 1989
期刊: Journal of immunology (Baltimore, Md. : 1950)
影响因子: --
作者:
Ghaffari,SH;Lobb,CJ
通讯作者: Lobb,CJ
DOI: 10.1016/0735-0651(89)90021-6
发表时间: 1989
期刊: Gene analysis techniques
影响因子: --
作者:
Kreitman,M;Landweber,LF
通讯作者: Landweber,LF
DOI: 10.1073/pnas.85.7.2245
发表时间: 1988-04
影响因子: 11.1
作者:
Joseph Schwager;Carole A. Mikoryak;Lisa A. Steiner
通讯作者: Joseph Schwager;Carole A. Mikoryak;Lisa A. Steiner
DOI: 10.1093/nar/18.17.5227
发表时间: 1990-09
影响因子: 14.9
作者:
Melanie R. Wilson;Ann Marcuz;Frederick van Ginkel;Norman W. Miller;L. Clem;D. Middleton;Gregory W. Warr
通讯作者: Melanie R. Wilson;Ann Marcuz;Frederick van Ginkel;Norman W. Miller;L. Clem;D. Middleton;Gregory W. Warr