Retention of membrane proteins by the endoplasmic reticulum.

Retention of membrane proteins by the endoplasmic reticulum.
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通过内质网保留膜蛋白。

DOI:
10.1083/jcb.101.5.1724
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发表时间:
1985-11
影响因子:
7.8
通讯作者:
ROTHMAN, JE
ROTHMAN, JE
中科院分区:
生物学1区
文献类型:
--
作者:
BRANDS, R;SNIDER, MD;HINO, Y;PARK, SS;GELBOIN, HV;ROTHMAN, JE

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我们使用了一种针对碳氢化合物诱导的细胞色素P450的单克隆抗体,通过电子显微镜来定位表位特异性细胞色素P450。细胞色素分布于肝细胞粗糙、光滑的内质网和核膜中。在高尔基堆积中未发现大量的细胞色素P450。我们也没有发现任何高尔基相关加工的证据,证明两种已知的内质网膜糖蛋白酶(葡萄糖苷酶II和己糖-6-磷酸脱氢酶)的asn连接的低聚糖链,或内质网膜糖蛋白的低聚糖链。我们得出结论,这些内质网膜蛋白在这个细胞器高度选择性输出的过程中被有效保留。
We have used a monoclonal antibody specific for a hydrocarbon-induced cytochrome P450 to localize, by electron microscopy, the epitope- specific cytochrome P450. The cytochrome was found in the rough and smooth endoplasmic reticulum (ER) and the nuclear envelope of hepatocytes. Significant quantities of cytochrome P450 were not found in Golgi stacks. We also could not find any evidence of Golgi- associated processing of the Asn-linked oligosaccharide chains of two well-characterized ER membrane glycoprotein enzymes (glucosidase II and hexose-6-phosphate dehydrogenase), or of the oligosaccharides attached to the bulk of the glycoproteins of the ER membrane. We conclude that these ER membrane proteins are efficiently retained during a process of highly selective export from this organelle.
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发表时间: 1981-01-01
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子: --
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