THE GENE STRUCTURE AND PROMOTER SEQUENCE OF MOUSE HYALURONAN SYNTHASE 1 (MHAS1)

THE GENE STRUCTURE AND PROMOTER SEQUENCE OF MOUSE HYALURONAN SYNTHASE 1 (MHAS1)
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小鼠透明质酸合酶1(MHAS1)的基因结构和启动子序列

DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
K. Kimata
K. Kimata
中科院分区:
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文献类型:
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作者:
Yoichi Yamada;N. Itano;M. Zako;Mamoru Yoshida;P. Lenas;A. Niimi;M. Ueda;K. Kimata

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小鼠透明质酸合酶1基因HAS 1的结构和组织通过携带整个基因的λ噬菌体克隆的直接测序和通过应用长且准确的(LA)-PCR方法扩增包含外显子-内含子边界和所有外显子的区域来确定。该基因全长约11 kb,由5个外显子和4个内含子组成。在小鼠HAS 1和非洲爪蟾DG 42基因之间发现了外显子-内含子组织的相似性,该基因最近被鉴定为非洲爪蟾透明质酸合酶。通过cDNA末端的快速扩增(5 '-RACE)确定转录起始位点。位置+1位于ATG起始密码子上游55个核苷酸处。HAS 1基因的启动子区没有典型的TATA盒,但含有位于转录起始位点上游190个核苷酸的CCAAT盒。对1.4kb的5'侧翼区的进一步分析揭示了转录因子的几个潜在结合基序。这些有关基因结构的信息可能有助于进一步研究启动子活性。
The structure and organization of mouse hyaluronan synthase 1 gene, HAS1 were determined by direct sequencing of lambda phage clones carrying the entire gene and by application of the long and accurate (LA)-PCR method to amplify regions encompassing the exon-intron boundaries and all of the exons. This gene spans about 11kb of genomic DNA and consists of 5 exons and 4 introns. A similarity in the exon-intron organization was found between the genes of mouse HAS1 and Xenopus laevis DG42 which was recently identified as Xenopus hyaluronan synthase. The transcription initiation site was determined by rapid amplification of the cDNA ends (5'-RACE). Position +1 is located 55 nucleotides upstream of the ATG initiation codon. The promoter region of the HAS1 gene has no typical TATA box, but contains a CCAAT box located 190 nucleotides upstream of the transcription initiation site. Further analysis of 1.4 kb of the 5' flanking region revealed several potential binding motifs for transcription factors. This information about the gene structure may be useful for further studies on the promoter activity.
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