Isolation and Characterization of the Gene Encoding the β-Subunit of Rat Follicle-Stimulating Hormone

Isolation and Characterization of the Gene Encoding the β-Subunit of Rat Follicle-Stimulating Hormone
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大鼠卵泡刺激素β亚基编码基因的分离和鉴定

DOI:
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发表时间:
1989
期刊:
影响因子:
--
通讯作者:
W. Chin
W. Chin
中科院分区:
--
文献类型:
--
作者:
S. Gharib;A. Roy;M. Wierman;W. Chin

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促卵泡激素(FSH)是一种垂体糖蛋白激素,由两个不同的亚基α和β组成,由不同的基因编码。通过筛选大鼠基因组DNA文库,与牛卵泡刺激素-β cDNA进行过滤杂交,分离出大鼠卵泡刺激素β亚基编码基因。大鼠基因组DNA的Southern blot分析表明,大鼠每个单倍体基因组有一个FSH-β基因拷贝。测定了大鼠FSH-β基因的核苷酸序列,并推导了该亚基的氨基酸序列。该基因由三个外显子和两个内含子组成。预测的氨基酸序列显示,有一个20个氨基酸的信号肽,后面是一个110个氨基酸残基的成熟蛋白。外显子I、II和III分别为36、187和1221 bp。内含子1 (640 bp)中断了5 ' -未翻译(UT)区(61 bp),内含子2(约1 kb)中断了氨基酸残基+34和+35之间的编码区。氨基酸序列的比较…
ABSTRACT Follicle-stimulating hormone (FSH) is a pituitary glycoprotein hormone that is comprised of two dissimilar subunits, α and β, encoded by separate genes. We have isolated the gene encoding the β-subunit of rat FSH by screening a rat genomic DNA library by filter hybridization with bovine FSH-β cDNA. Southern blot analysis of rat genomic DNA suggests that there is a single copy of the FSH-β gene per haploid genome in the rat. The nucleotide sequence of the rat FSH-β gene was determined and the amino acid sequence of the subunit was deduced. The gene is composed of three exons and two introns. The predicted amino acid sequence reveals that there is a 20-amino-acid signal peptide followed by a mature protein of 110 amino acid residues. Exons I, II, and III are 36, 187, and 1221 bp, respectively. Intron 1 (640 bp) interrupts the 5′-untranslated (UT) region (61 bp) and intron 2 (approximately 1 kb) interrupts the coding region between amino acid residues +34 and +35. Comparison of the amino acid sequen...
大鼠促甲状腺素β亚基染色体基因的组织和核苷酸序列分析。
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