Cloning and characterization of a cDNA coding for mouse placental alkaline phosphatase.

Cloning and characterization of a cDNA coding for mouse placental alkaline phosphatase.
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编码小鼠胎盘碱性磷酸酶的 cDNA 的克隆和表征。

DOI:
10.1073/pnas.84.20.7051
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发表时间:
1987
影响因子:
11.1
通讯作者:
Mintz,B
Mintz,B
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Terao,M;Mintz,B

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从胎盘中部分纯化小鼠碱性磷酸酶[ALP;正磷酸单酯磷酸水解酶(碱性最适),EC 3.1.3.1]。通过免疫印迹分析获得的数据表明,这种酶的一级结构具有更大的同源性,人类和牛的肝脏ALP比人类胎盘同工酶。因此,使用编码人肝型ALP的全长cDNA作为探针来分离小鼠胎盘ALP cDNA。克隆的小鼠cDNA长2459个碱基对,由一个开放阅读框组成,编码一个524个氨基酸的多肽,该多肽含有一个17个氨基酸的推定信号肽。小鼠胎盘ALP与人肝ALP同工酶在氨基酸水平上的同源性为90%,而与人胎盘ALP同工酶的同源性仅为55%。RNA印迹杂交结果表明,小鼠胎盘ALP是由一个基因相同的基因表达在小鼠肝,肾,畸胎瘤干细胞。因此,该基因在小鼠和人类中进化上高度保守。
Mouse alkaline phosphatase [ALP; orthophosphoric-monoester phosphohydrolase (alkaline optimum), EC 3.1.3.1] was partially purified from placenta. Data obtained by immunoblotting analysis suggested that the primary structure of this enzyme has a much greater homology to that of human and bovine liver ALPs than to the human placental isozyme. Therefore, a full-length cDNA encoding human liver-type ALP was used as a probe to isolate the mouse placental ALP cDNA. The cloned mouse cDNA is 2459 base pairs long and is composed of an open reading frame encoding a 524-amino acid polypeptide that contains a putative signal peptide of 17 amino acids. Homology at the amino acid level of the mouse placental ALP is 90% to the human liver isozyme but only 55% to the human placental counterpart. RNA blot hybridization results indicate that the mouse placental ALP is encoded by a gene identical to the gene expressed in mouse liver, kidney, and teratocarcinoma stem cells. This gene is therefore evolutionarily highly conserved in mouse and human.
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发表时间: 1987
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DOI: --
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