Functional differences in yeast protein disulfide isomerases.
Functional differences in yeast protein disulfide isomerases.
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DOI:
10.1083/jcb.152.3.553
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发表时间:
2001-02-05
期刊:
影响因子:
--
通讯作者:
Winther JR
中科院分区:
文献类型:
--
作者:
Nørgaard P;Westphal V;Tachibana C;Alsøe L;Holst B;Winther JR
PDI1 is the essential gene encoding protein disulfide isomerase in yeast. The Saccharomyces cerevisiae genome, however, contains four other nonessential genes with homology to PDI1: MPD1, MPD2, EUG1, and EPS1. We have investigated the effects of simultaneous deletions of these genes. In several cases, we found that the ability of the PDI1 homologues to restore viability to a pdi1-deleted strain when overexpressed was dependent on the presence of low endogenous levels of one or more of the other homologues. This shows that the homologues are not functionally interchangeable. In fact, Mpd1p was the only homologue capable of carrying out all the essential functions of Pdi1p. Furthermore, the presence of endogenous homologues with a CXXC motif in the thioredoxin-like domain is required for suppression of a pdi1 deletion by EUG1 (which contains two CXXS active site motifs). This underlines the essentiality of protein disulfide isomerase-catalyzed oxidation. Most mutant combinations show defects in carboxypeptidase Y folding as well as in glycan modification. There are, however, no significant effects on ER-associated protein degradation in the various protein disulfide isomerase-deleted strains.
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影响因子:
16
作者:
Frand, AR;Kaiser, CA
通讯作者:
Kaiser, CA
DOI:
10.1083/jcb.104.5.1183
发表时间:
1987-05
期刊:
The Journal of cell biology
影响因子:
--
作者:
Blachly-Dyson E;Stevens TH
通讯作者:
Stevens TH
DOI:
10.1083/jcb.138.6.1229
发表时间:
1997-09-22
期刊:
The Journal of cell biology
影响因子:
--
作者:
Holst B;Tachibana C;Winther JR
通讯作者:
Winther JR
DOI:
10.1073/pnas.53.3.676
发表时间:
1965-01-01
影响因子:
11.1
作者:
GIVOL, D;DELORENZO, F;ANFINSEN, CB
通讯作者:
ANFINSEN, CB
影响因子:
11.4
作者:
Chivers, PT;Laboissiere, MCA;Raines, RT
通讯作者:
Raines, RT