Molecular Characterization of trans-Golgi p230
Molecular Characterization of trans-Golgi p230
复制标题
反式高尔基体 p230 的分子表征
DOI:
--
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发表时间:
1996
影响因子:
4.8
通讯作者:
B. Toh
中科院分区:
文献类型:
--
作者:
R. Erlich;P. Gleeson;P. Campbell;E. Dietzsch;B. Toh
Using autoantibodies from a Sjögren's syndrome patient, we have previously identified a 230-kDa peripheral membrane protein associated with the cytosolic face of the trans-Golgi (Kooy, J., Toh, B. H., Pettitt, J. M., Erlich, R. and Gleeson, P. A.(1992) J. Biol. Chem. 267, 20255-20263). Here we report the molecular cloning and sequence analysis of human p230 and the localization of its gene to chromosome 6p12-22. Partial cDNA clones, isolated from a HeLa cell cDNA library using autoantibodies, were used to obtain additional cDNAs, which together span 7695 base pairs (bp). The p230 mRNA is 7.7 kilobases. Two alternatively spliced mRNAs for p230 were detected. These differed by 21- and 63-bp insertions in the 3′-sequence, resulting in differences in amino acid sequence at the carboxyl terminus. The predicted 261-kDa protein is highly hydrophilic with 17-20% homology with many proteins containing coiled-coil domains. Apart from two proline-rich regions (amino acids 1-117 and 239-270), p230 contains a very high frequency of heptad repeats, characteristic of α-helices that form dimeric coiled-coil structures. p230 also includes the sequence ESLALEELEL (amino acids 538-546), a motif found in the granin family of acidic proteins present in secretory granules of neuroendocrine cells. This is the first report of a cytosolic Golgi protein containing a granin motif. The structural characteristics of p230 indicate that it may play a role in vesicular transport from the trans-Golgi.
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DOI:
10.1073/pnas.87.1.118
发表时间:
1990
影响因子:
11.1
作者:
Randall F. Smith;Temple F. Smith
通讯作者:
Randall F. Smith;Temple F. Smith
影响因子:
56.9
作者:
HARBURY, PB;ZHANG, T;ALBER, T
通讯作者:
ALBER, T
影响因子:
4
作者:
S. Endow;Rashmi Chandra;D. J. Komma;Akihiko H. Yamamoto;Edward D. Salmon
通讯作者:
S. Endow;Rashmi Chandra;D. J. Komma;Akihiko H. Yamamoto;Edward D. Salmon
影响因子:
13.8
作者:
Oas,TG;Endow,SA
通讯作者:
Endow,SA
影响因子:
3.3
作者:
Kubalek,EW;Uyeda,TQ;Spudich,JA
通讯作者:
Spudich,JA