Characterization of cDNA encoding human pregnancy-specific beta 1-glycoprotein from placenta and extraplacental tissues and their comparison with carcinoembryonic antigen.

Characterization of cDNA encoding human pregnancy-specific beta 1-glycoprotein from placenta and extraplacental tissues and their comparison with carcinoembryonic antigen.
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胎盘和胎盘外组织编码人妊娠特异性 β1-糖蛋白 cDNA 的表征及其与癌胚抗原的比较。

DOI:
10.1089/dna.1.1988.7.545
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发表时间:
1988
期刊:
DNA (Mary Ann Liebert, Inc.)
影响因子:
--
通讯作者:
Shupert,WL
Shupert,WL
中科院分区:
--
文献类型:
--
作者:
Chan,WY;Borjigin,J;Zheng,QX;Shupert,WL

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人妊娠特异性β1-糖蛋白(SP1)是胎盘在妊娠期间大量产生的妊娠早期蛋白之一。从一个足月胎盘cDNA文库中分离出一个编码人胎盘SP1的cDNA,并测定其核苷酸序列。该cDNA包含1,958个核苷酸,其中5 ‘非编码序列为73 bp, 1,257 bp的序列编码419个氨基酸的蛋白质,计算分子量为47.2 kD, TGA停止密码子和625 bp的3 ’非编码序列。两个内部重复结构域,每一个93个氨基酸,可以在编码序列中识别。每个重复序列中两个半胱氨酸残基的位置是保守的。一个489 bp的cDNA序列与胎盘!SP1 cDNA从人睾丸cDNA文库中分离得到。用SP1 cDNA探针筛选HeLa细胞文库,得到10个阳性克隆。对其中一个克隆的cDNA插入片段进行序列测定,发现其部分cDNA长度为773 bp,与胎盘SP1 cDNA在核苷酸水平上同源性为94%,在氨基酸水平上同源性为88%。这些观察结果证实了SP1基因可能在胎盘外组织中表达的观点。通过GenBank™/EMBL数据库检索,SP1 cDNA与人癌胚抗原(CEA) cDNA同源性为74-80%。SP1作为免疫球蛋白超基因家族的一个亚家族涉及多个基因。
Human pregnancy-specific β1-glycoprotein (SP1) is one of the early pregnancy proteins produced in large quantity by the placenta during pregnancy. The nucleotide sequence of a cDNA encoding human placental SP1 isolated from a term placental cDNA library was determined. This cDNA contains 1,958 nucleotides with a 5′ noncoding sequence of 73 bp, a sequence of 1,257 bp encoding a protein of 419 amino acids with calculated molecular mass of 47.2 kD, a TGA stop codon, and 625 bp of 3′ noncoding sequence. Two internal repeat domains, each of 93 amino acids, can be identified within the coding sequence. The positions of two cysteine residues within each repeat are conserved. A cDNA of 489 bp identical to the sequence from nucleotides 422-910 of placenta! SP1 cDNA was isolated from a human testis cDNA library. Screening of a HeLa cell library with SP1 cDNA probe yielded 10 positive clones. Sequence determination of one of the cloned cDNA inserts revealed a partial cDNA of 773 bp which is 94% homologous at the nucleotide level and 88% homologous at the amino acid level to the placental SP1 cDNA. These observations confirm the observation that some of the SP1 genes might be expressed in extraplacental tissues. Searching through the GenBank™/EMBL database revealed 74–80% homology between SP1 cDNA with human carcinoembryonic antigen (CEA) cDNA. The multiple genes of SP1 as a subfamily of the immunoglobulin supergene family is implicated.
DOI: 10.1093/bioinformatics/4.1.181
发表时间: 1988-03
期刊: Computer applications in the biosciences : CABIOS
影响因子: --
作者:
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培养的羊水细胞中的妊娠特异性 β-1-糖蛋白 (SP1)。
DOI: 10.1210/jcem-51-6-1432
发表时间: 1980
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影响因子: --
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影响因子: 11.1
作者:
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DOI: 10.1093/oxfordjournals.humrep.a136766
发表时间: 1988
期刊: Human reproduction (Oxford, England)
影响因子: --
作者:
Chan,WY;Tease,LA;Borjigin,J;Chan,PK;Rennert,OM;Srinivasan,B;Shupert,WL;Cook,RG
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DOI: 10.1073/pnas.84.15.5350
发表时间: 1987
影响因子: 11.1
作者:
M. Kamarck;J. Elting;J. Hart;S. Goebel;P. Rae;M. A. Nothdurft;J. J. Nedwin;T. Barnett
通讯作者: T. Barnett