Mannose 6-Phosphate Receptors Regulate the Formation of Clathrin-coated Vesicles in the TGN

Mannose 6-Phosphate Receptors Regulate the Formation of Clathrin-coated Vesicles in the TGN
复制标题

甘露糖 6-磷酸受体调节 TGN 中网格蛋白包被囊泡的形成

DOI:
--
复制
发表时间:
1997
影响因子:
7.8
通讯作者:
B. Hoflack
B. Hoflack
中科院分区:
生物学1区
文献类型:
--
作者:
R. L. Borgne;B. Hoflack

文献摘要

参考文献

被引文献

相似文献

两个甘露糖6-磷酸受体(MPRs)从分泌途径转运到内吞途径是由涂覆有AP-1高尔基体特异性组装蛋白和网格蛋白的载体囊泡介导的。使用重建胞质AP-1到TGN膜上的ARF-1依赖性易位的体外测定,我们先前已经报道MPR是AP-1有效募集的关键组分(Le Borgne,R.,G.格里菲斯和B。霍弗拉克1996. J.Biol.Chem.271:2162-2170)。使用针对小鼠γ-适应素的多克隆抗体,我们现在已经检查了缺乏两种MPR或重新表达生理水平的任一MPR的小鼠成纤维细胞的亚细胞分级分离后AP-1的稳态分布。我们报告,AP-1结合到膜和网格蛋白包被的囊泡的量取决于MPR的表达水平和其胞质结构域的完整性。因此,这些结果表明MPR的浓度,即,主要的跨膜蛋白向内体排列,决定了在TGN中形成的网格蛋白包被的囊泡的数量。
The transport of the two mannose 6-phosphate receptors (MPRs) from the secretory pathway to the endocytic pathway is mediated by carrier vesicles coated with the AP-1 Golgi-specific assembly protein and clathrin. Using an in vitro assay that reconstitutes the ARF-1–dependent translocation of cytosolic AP-1 onto membranes of the TGN, we have previously reported that the MPRs are key components for the efficient recruitment of AP-1 (Le Borgne, R., G. Griffiths, and B. Hoflack. 1996. J. Biol. Chem. 271:2162–2170). Using a polyclonal antibody against the mouse γ-adaptin, we have now examined the steady state distribution of AP-1 after subcellular fractionation of mouse fibroblasts lacking both MPRs or reexpressing physiological levels of either MPR. We report that the amount of AP-1 bound to membranes and associated with clathrin-coated vesicles depends on the expression level of the MPRs and on the integrity of their cytoplasmic domains. Thus, these results indicate that the concentration of the MPRs, i.e., the major transmembrane proteins sorted toward the endosomes, determines the number of clathrin-coated vesicles formed in the TGN.
DOI: 10.1002/j.1460-2075.1990.tb07513.x
发表时间: 1990-10-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
JACKSON, MR;NILSSON, T;PETERSON, PA
通讯作者: PETERSON, PA
DOI: 10.1016/s0021-9258(18)41533-5
发表时间: 1993-10
期刊: The Journal of biological chemistry
影响因子: --
作者:
H. J. Chen;J. Remmler;J. Delaney;D. Messner;P. Lobel
通讯作者: H. J. Chen;J. Remmler;J. Delaney;D. Messner;P. Lobel
阳离子依赖性甘露糖 6-磷酸受体胞质结构域羧基末端附近的 His-Leu-Leu 序列对于溶酶体酶分选功能是必需的。
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
Johnson,KF;Kornfeld,S
通讯作者: Kornfeld,S
ADP-核糖基化因子是内质网和顺式高尔基体之间的囊泡运输所必需的。
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
Balch,WE;Kahn,RA;Schwaninger,R
通讯作者: Schwaninger,R