Human cystathionine β-synthase: gene organization and expression of different 5′ alternative splicing

Human cystathionine β-synthase: gene organization and expression of different 5′ alternative splicing
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人胱硫醚β-合酶:不同5选择性剪接的基因组织和表达

DOI:
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发表时间:
1997
期刊:
影响因子:
2.5
通讯作者:
J. London
J. London
中科院分区:
生物学4区
文献类型:
--
作者:
J. Chassé;V. Paul;Raphael Escañez;P. Kamoun;J. London

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人胱硫醚β-合酶(CBS)基因跨度超过30 kb,由19个外显子组成,其中有三个不同的5 '非翻译区,包括三个不同的外显子1(外显子1a、B和C)。外显子1a和1 B彼此相距390 bp,并与cDNA《a》和cDNA《B》中的外显子2连接。外显子1c与cDNA « c »中的外显子5相连,与外显子1b相距7 kb。所有剪接位点都符合GT/AG规则,包括从外显子la或lb到外显子2以及从外显子Ic到外显子5的那些。在外显子1a和1b的上游,我们发现了两个推定的具有高C + G核苷酸含量的启动子序列,一个在-70个核苷酸处的CAAT盒(对于外显子1b),没有TATA盒,几个Sp1结合调节共有序列,以及一些其他调节序列。成人和胎儿北方印迹杂交的总cDNA包含外显子1 B,或特异性探针从外显子1(B和c)显示的mRNA的2.5 kb,2.7 kb和3.7 kb。这些结果表明,含有不同外显子1的mRNA受不同启动子的控制。
The human cystathionine β-synthase (CBS) gene spans in excess of 30 kb and consists of 19 exons, with three different 5′ untranslated regions including three different exons 1 (exons 1 a, b, and c). Exon la and 1b are 390 bp apart from each other and are linked to exon 2 in cDNA « a » and cDNA « b ». Exon 1c, which linked to exon 5 in cDNA « c », is 7 kb apart from exon 1b. All splice sites conform to the GT/AG rule, including those from exon la or 1b to exon 2 and from exon 1c to exon 5. Upstream of exons la and 1b, we found two putative promoter sequences with high C + G nucleotide content, one CAAT box at —70 nucleotides (for exon lb), no TATA box, several Sp1 binding regulatory consensus sequences, and some other regulatory sequences. Human adult and fetal Northern blots hybridized with total cDNA containing exon 1b, or specific probes from exons 1 (b and c) showed mRNAs of 2.5 kb, 2.7 kb, and 3.7 kb. These results suggest that the mRNAs containing the different exons 1 are under the control of different promoters.
DOI: 10.1016/s0021-9258(19)49931-6
发表时间: 1992-06
期刊: The Journal of biological chemistry
影响因子: --
作者:
M. Swaroop;K. Bradley;T. Ohura;T. Tahara;M. Roper;L. Rosenberg;J. Kraus
通讯作者: M. Swaroop;K. Bradley;T. Ohura;T. Tahara;M. Roper;L. Rosenberg;J. Kraus
DOI: 10.1016/0003-9861(92)90443-z
发表时间: 1992-11-01
影响因子: 3.9
作者:
ROPER, MD;KRAUS, JP
通讯作者: KRAUS, JP
DOI: 10.1016/s0021-9258(17)43702-1
发表时间: 1984-01
期刊: The Journal of biological chemistry
影响因子: --
作者:
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通讯作者: F. Skovby;J. Kraus;L. Rosenberg