Cloning of rat vitamin K-dependent gamma-glutamyl carboxylase and developmentally regulated gene expression in postimplantation embryos.
Cloning of rat vitamin K-dependent gamma-glutamyl carboxylase and developmentally regulated gene expression in postimplantation embryos.
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大鼠维生素 K 依赖性 γ-谷氨酰羧化酶的克隆和植入后胚胎中发育调控的基因表达。
DOI:
10.1006/excr.1998.4151
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发表时间:
1998
期刊:
影响因子:
--
通讯作者:
Roth,DA
中科院分区:
文献类型:
--
作者:
Romero,EE;Velazquez-Estades,LJ;Deo,R;Schapiro,B;Roth,DA
Vitamin K-dependent carboxylase catalyzes the posttranslational modification of glutamate to γ-carboxyglutamate (Gla) in its substrates, the vitamin K-dependent proteins (VKDPs). This modification is required for the activities of the VKDPs. Recent evidence demonstrates previously unrecognized roles for VKDPs as signaling molecules important in the regulation of cell growth, adhesion, and apoptosis, suggesting developmental functions for VKDPs and hence the carboxylase. The tissue distribution and functions of carboxylase in development are unknown. In this study, we isolated and characterized the full-length cDNA encoding the rat carboxylase and analyzed, at the cellular level, the expression of this gene in rat embryos byin situhybridization. We demonstrate that the expression of this gene is highly regulated in a developmental and tissue-specific manner. Hepatocytes, the major site of synthesis of VKDPs of blood coagulation, express carboxylase mRNA late in gestation, in contrast to the central nervous system, mesenchymal, and skeletal tissues which express carboxylase mRNA early during rat embryogenesis. The tissue-specific temporal expression of the carboxylase gene during embryogenesis indicates that vitamin K-dependent carboxylation and the formation of Gla is developmentally regulated. These studies suggest that vitamin K-dependent carboxylation is an important modulator of embryonic VKDP function.
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影响因子:
6.7
作者:
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通讯作者:
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影响因子:
20.3
作者:
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通讯作者:
Furie,BC
DOI:
10.1073/pnas.94.17.9069
发表时间:
1997
影响因子:
11.1
作者:
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通讯作者:
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作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
Ginsburg, D