Single amino acid mutations in the Saccharomyces cerevisiae rhomboid peptidase, Pcp1p, alter mitochondrial morphology.
Single amino acid mutations in the Saccharomyces cerevisiae rhomboid peptidase, Pcp1p, alter mitochondrial morphology.
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酿酒酵母菱形肽酶 Pcp1p 中的单氨基酸突变会改变线粒体形态。
DOI:
10.1002/cbin.11219
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发表时间:
2020
影响因子:
3.9
通讯作者:
Gordon,DonnaM
中科院分区:
文献类型:
--
作者:
Huddleston,MaryElizabeth;Xiao,Ningyu;Both,AndriesPieter;Gordon,DonnaM
Key to mitochondrial activities is the maintenance of mitochondrial morphology, specifically cristae structures formed by the invagination of the inner membrane that are enriched in proteins of the electron transport chain. InSaccharomyces cerevisiae, these cristae folds are a result of the membrane fusion activities of Mgm1p and the membrane‐bending properties of adenosine triphosphate (ATP) synthase oligomerization. An additional protein linked to mitochondrial morphology is Pcp1p, a serine protease responsible for the proteolytic processing of Mgm1p. Here, we have used hydroxylamine‐based random mutagenesis to identify amino acids important for Pcp1p peptidase activity. Using this approach we have isolated five single amino acid mutants that exhibit respiratory growth defects that correlate with loss of mitochondrial genome stability. Reduced Pcp1p protease activity was confirmed by immunoblotting with the accumulation of improperly processed Mgm1p. Ultra‐structural analysis of mitochondrial morphology in these mutants found a varying degree of defects in cristae organization. However, not all of the mutants presented with decreased ATP synthase complex assembly as determined by blue native polyacrylamide gel electrophoresis. Together, these data suggest that there is a threshold level of processed Mgm1p required to maintain ATP synthase super‐complex assembly and mitochondrial cristae organization.
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影响因子:
64.5
作者:
L. Roy;Balraj Singh;J. Gautier;R. Arlinghaus;S. Nordeen;J. Maller
通讯作者:
J. Maller
影响因子:
56.9
作者:
RAUSCHER, FJ;COHEN, DR;FRANZA, BR
通讯作者:
FRANZA, BR
影响因子:
64.5
作者:
PAPKOFF, J;NIGG, EA;HUNTER, T
通讯作者:
HUNTER, T
DOI:
10.1073/pnas.86.18.7038
发表时间:
1989-09
影响因子:
11.1
作者:
S. O'Keefe;H. Wolfes;A. Kiessling;G. Cooper
通讯作者:
S. O'Keefe;H. Wolfes;A. Kiessling;G. Cooper
DOI:
10.1099/0022-1317-13-2-203
发表时间:
1971
期刊:
The Journal of general virology
影响因子:
--
作者:
P. Fischinger;D. Haapala
通讯作者:
D. Haapala