Cloning and Characterisation of the Hint Homologue of the Thermophile Thermus thermophilus

Yann Gibert, S. Spada, J. Wall, J. Pembroke
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Abstract

Screening of a genomic library of the thermophile Thermus thermophilus revealed a novel thermophilic hint gene, homologues of which are highly conserved in genera from archaea to mammals. Hint belongs to the HIT protein super-family, which contains two broad groups, Fhit, associated with tumour suppression in eukaryotes and Hint with putatitive protein kinase C inhibitory activity. In T. thermophilus the 321bp gene has a GC content of 67% overall and 94.4% in the third nucleotide position, with unusually no thymine as a wobble base. The gene product, a small highly conserved 11996Da predicted soluble cytoplasmic protein, offers an ideal opportunity to investigate thermostabilising amino acid substitutions. Here we report on the characterisation of the novel hint sequence.
嗜热菌线索同源基因的克隆与鉴定
通过对嗜热热菌基因组文库的筛选,发现了一个新的嗜热暗示基因,该基因同源物在古细菌和哺乳动物属中均高度保守。Hint属于HIT蛋白超家族,该家族包含两大类:Fhit与真核生物的肿瘤抑制有关,而Hint与推测的蛋白激酶C抑制活性有关。在嗜热T.中,321bp基因的总GC含量为67%,在第三核苷酸位置的GC含量为94.4%,不寻常地没有胸腺嘧啶作为摆动碱基。该基因产物是一个小的高度保守的11996Da预测的可溶性细胞质蛋白,为研究热稳定氨基酸取代提供了理想的机会。在这里,我们报告了新的提示序列的特征。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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