Peptidylarginine deiminase gene is differentially expressed in freshwater and brackish water rainbow trout

Peptidylarginine deiminase gene is differentially expressed in freshwater and brackish water rainbow trout
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肽基精氨酸脱亚胺酶基因在淡水和咸水虹鳟鱼中差异表达

DOI:
10.1007/s11033-009-9738-5
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发表时间:
2010
影响因子:
2.8
通讯作者:
Goldammer T.
Goldammer T.
中科院分区:
生物学4区
文献类型:
--
作者:
Rebl A;Köllner B;Anders E;Wimmers K;Goldammer T.

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从虹鳟鱼(Oncorhynchus mykiss)中克隆了肽基精氨酸脱亚胺酶(PADI)样cDNA序列。该基因由111 bp的5′-非翻译区、731 bp的3′-非翻译区和2,010 bp的开放阅读框组成,编码669个氨基酸。在钙离子存在的情况下,PADI酶催化翻译后修饰反应生成瓜氨酸残基。哺乳动物PADI酶参与细胞分化和发育过程中的许多调节过程,如皮肤角质化、髓鞘成熟和组蛋白脱亚氨基化。尽管已从哺乳动物中分离出五种PADI同种型,但在硬骨鱼中仅存在一种PADI酶,该酶含有负责催化和钙离子结合的保守氨基酸残基。在基因数据库中可获得的鱼PADI蛋白质序列的序列同一性超过67%。系统发育分析表明,不仅鱼类,但也两栖动物和鸟类的PADI样蛋白共享与哺乳动物PADI 2最相同的氨基酸残基。虹鳟PADI样基因在虹鳟鱼的皮肤、鳍、鳃、脑和脾脏中的mRNA水平较高。实时荧光定量RT-PCR结果显示,PADI基因在淡水养殖的STEELHEAD鳟鱼和半咸水养殖的BORN鳟鱼的肝脏、肾脏和脾脏中存在差异表达。
Peptidylarginine deiminase (PADI)-like cDNA sequence was isolated from rainbow trout (Oncorhynchus mykiss). It consists of a 111-bp 5′-untranslated region, a 731-bp 3′-UTR, and a 2,010-bp open reading frame encoding a protein of 669 amino acids. In the presence of calcium ions, PADI enzymes catalyze the post-translational modification reaction generating citrulline residues. Mammalian PADI enzymes are involved in a number of regulatory processes during cell differentiation and development such as skin keratinization, myelin maturation, and histone deimination. Though five PADI isotypes have been isolated from mammals, in bony fish only one PADI enzyme is present, which contains conserved amino acid residues responsible for catalysis and calcium ion-binding. Sequence identity of piscine PADI protein sequences available at gene databases exceeds 67%. Phylogenetic analyses revealed that not only piscine, but also amphibian and avian PADI-like proteins share most identical amino acid residues with mammalian PADI2. mRNA level of trout PADI-like gene is high in skin, fin, gills, brain, and spleen of rainbow trout. Quantitative Real-Time RT-PCR revealed that PADI gene is differentially expressed in liver, trunk kidney, and spleen of two trout strains, the freshwater-cultured STEELHEAD trout and the brackish water strain BORN.
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