ER-to-Golgi trafficking of procollagen in the absence of large carriers
ER-to-Golgi trafficking of procollagen in the absence of large carriers
复制标题
在没有大载体的情况下,前胶原从内质网到高尔基体的运输
DOI:
10.1101/339804
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
McCaughey J
中科院分区:
文献类型:
--
作者:
McCaughey J
Secretion and assembly of collagen are fundamental to the function of the extracellular matrix. Defects in the assembly of a collagen matrix lead to pathologies including fibrosis and osteogenesis imperfecta. Owing to the size of fibril-forming procollagen molecules it is assumed that they are transported from the endoplasmic reticulum to the Golgi in specialized large COPII-dependent carriers. Here, analyzing endogenous procollagen and a new engineered GFP-tagged form, we show that transport to the Golgi occurs in the absence of large (>350 nm) carriers. Large GFP-positive structures were observed occasionally, but these were nondynamic, are not COPII positive, and are labeled with markers of the ER. We propose a short-loop model of COPII-dependent ER-to-Golgi traffic that, while consistent with models of ERGIC-dependent expansion of COPII carriers, does not invoke long-range trafficking of large vesicular structures. Our findings provide an important insight into the process of procollagen trafficking and reveal a short-loop pathway from the ER to the Golgi, without the use of large carriers.
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影响因子:
4.8
作者:
M. Tasab;Lynsey Jenkinson;N. Bulleid
通讯作者:
N. Bulleid
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1016/s0021-9258(19)74071-x
发表时间:
1992-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
S. Lightfoot;D. Holmes;A. Brass;M. E. Grant;P. Byers;K. Kadler
通讯作者:
S. Lightfoot;D. Holmes;A. Brass;M. E. Grant;P. Byers;K. Kadler
影响因子:
3.9
作者:
BLANCK, TJJ;PETERKOFSKY, B
通讯作者:
PETERKOFSKY, B
影响因子:
4
作者:
D. Stephens;R. Pepperkok
通讯作者:
D. Stephens;R. Pepperkok