Yeast homologs of human MCUR1 regulate mitochondrial proline metabolism.
Yeast homologs of human MCUR1 regulate mitochondrial proline metabolism.
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DOI:
10.1038/s41467-020-18704-1
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发表时间:
2020-09-25
影响因子:
16.6
通讯作者:
Gohil VM
中科院分区:
文献类型:
--
作者:
Zulkifli M;Neff JK;Timbalia SA;Garza NM;Chen Y;Watrous JD;Murgia M;Trivedi PP;Anderson SK;Tomar D;Nilsson R;Madesh M;Jain M;Gohil VM
Mitochondria house evolutionarily conserved pathways of carbon and nitrogen metabolism that drive cellular energy production. Mitochondrial bioenergetics is regulated by calcium uptake through the mitochondrial calcium uniporter (MCU), a multi-protein complex whose assembly in the inner mitochondrial membrane is facilitated by the scaffold factor MCUR1. Intriguingly, many fungi that lack MCU contain MCUR1 homologs, suggesting alternate functions. Herein, we characterize Saccharomyces cerevisiae homologs Put6 and Put7 of MCUR1 as regulators of mitochondrial proline metabolism. Put6 and Put7 are tethered to the inner mitochondrial membrane in a large hetero-oligomeric complex, whose abundance is regulated by proline. Loss of this complex perturbs mitochondrial proline homeostasis and cellular redox balance. Yeast cells lacking either Put6 or Put7 exhibit a pronounced defect in proline utilization, which can be corrected by the heterologous expression of human MCUR1. Our work uncovers an unexpected role of MCUR1 homologs in mitochondrial proline metabolism. Although some fungal mitochondria lack the calcium uniporter, many intriguingly encode homologs of the uniporter assembly factor MCUR1. Here, the authors show that in budding yeast, the MCUR1 homologs Put6 and Put7 regulate mitochondrial proline metabolism, a function also conserved in human MCUR1.
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影响因子:
3.9
作者:
HAGEDORN, CH;PHANG, JM
通讯作者:
PHANG, JM
影响因子:
--
作者:
Fendt SM;Sauer U
通讯作者:
Sauer U
DOI:
10.1126/science.1214977
发表时间:
2012-05-18
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Bick AG;Calvo SE;Mootha VK
通讯作者:
Mootha VK
影响因子:
2.9
作者:
MEZL, VA;KNOX, WE
通讯作者:
KNOX, WE
影响因子:
16
作者:
Floyd BJ;Wilkerson EM;Veling MT;Minogue CE;Xia C;Beebe ET;Wrobel RL;Cho H;Kremer LS;Alston CL;Gromek KA;Dolan BK;Ulbrich A;Stefely JA;Bohl SL;Werner KM;Jochem A;Westphall MS;Rensvold JW;Taylor RW;Prokisch H;Kim JP;Coon JJ;Pagliarini DJ
通讯作者:
Pagliarini DJ