首页> 外文期刊>Genomics >Identification and characterization of TESK2, a novel member of the LIMK/TESK family of protein kinases, predominantly expressed in testis.
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Identification and characterization of TESK2, a novel member of the LIMK/TESK family of protein kinases, predominantly expressed in testis.

机译:TESK2的鉴定和表征,这是LIMK / TESK蛋白激酶家族的一个新成员,主要在睾丸中表达。

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摘要

In this study we present the cDNA sequence of a novel putative protein kinase, denoted TESK2. The open reading frame of TESK2 encodes a putative 555-amino-acid protein, including a protein kinase consensus sequence in the N-terminal half. The protein kinase domain of TESK2 is structurally similar to the kinase domain of the protein serine/threonine kinase TESK1 (64% identity) and to those of the LIMK1 and LIMK2 kinases (42 and 39% identity, respectively). TESK2, together with TESK1, constitutes a second subgroup of the LIMK/TESK family of protein kinases, as revealed by phylogenetic analysis of the protein kinase domains. Chromosomal localization of human TESK2 was assigned to 1p32. Expression analysis of human TESK2 revealed a single mRNA species of 3.0 kb predominantly expressed in testis and prostate and low expression in most other tissues examined. Rat testicles expressed a single species of TESK2 mRNA of approximately 3.5 kb. However, the transcript was first detectable in rat testis after day 30 of postnatal development and was predominantly expressed in round spermatids. These observations suggest that TESK2 plays an important role in spermatogenesis. Copyright 1999 Academic Press.
机译:在这项研究中,我们介绍了一种新型推定蛋白激酶(称为TESK2)的cDNA序列。 TESK2的开放阅读框编码一个推测的555个氨基酸的蛋白质,在N端一半包含一个蛋白激酶共有序列。 TESK2的蛋白激酶结构域在结构上与丝氨酸/苏氨酸激酶TESK1的蛋白激酶结构域(同一性为64%)以及LIMK1和LIMK2激酶的蛋白激酶结构域(分别为42%和39%)相同。正如蛋白激酶结构域的系统发育分析所揭示的,TESK2与TESK1一起构成了LIMK / TESK蛋白激酶家族的第二个亚组。人类TESK2的染色体定位被指定为1p32。人TESK2的表达分析表明,3.0 kb的单个mRNA种类主要在睾丸和前列腺中表达,而在大多数其他组织中则低表达。大鼠睾丸表达约3.5 kb的TESK2 mRNA的单一种类。但是,该转录本是在出生后30天后在大鼠睾丸中首次检测到的,主要在圆形精子中表达。这些观察结果表明TESK2在精子发生中起重要作用。版权所有1999 Academic Press。

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