A novel motif in the yeast mitochondrial dynamin Dnm1 is essential for adaptor binding and membrane recruitment.
A novel motif in the yeast mitochondrial dynamin Dnm1 is essential for adaptor binding and membrane recruitment.
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DOI:
10.1083/jcb.201207079
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发表时间:
2012-11-12
期刊:
影响因子:
--
通讯作者:
Shaw JM
中科院分区:
文献类型:
--
作者:
Bui HT;Karren MA;Bhar D;Shaw JM
A novel motif in the Insert B domain of the mitochondrial dynamin Dnm1 is essential for interaction with its adaptor Mdv1 during mitochondrial fission. To initiate mitochondrial fission, dynamin-related proteins (DRPs) must bind specific adaptors on the outer mitochondrial membrane. The structural features underlying this interaction are poorly understood. Using yeast as a model, we show that the Insert B domain of the Dnm1 guanosine triphosphatase (a DRP) contains a novel motif required for association with the mitochondrial adaptor Mdv1. Mutation of this conserved motif specifically disrupted Dnm1–Mdv1 interactions, blocking Dnm1 recruitment and mitochondrial fission. Suppressor mutations in Mdv1 that restored Dnm1–Mdv1 interactions and fission identified potential protein-binding interfaces on the Mdv1 β-propeller domain. These results define the first known function for Insert B in DRP–adaptor interactions. Based on the variability of Insert B sequences and adaptor proteins, we propose that Insert B domains and mitochondrial adaptors have coevolved to meet the unique requirements for mitochondrial fission of different organisms.
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影响因子:
21.3
作者:
Bleazard, W;McCaffery, JM;Shaw, JM
通讯作者:
Shaw, JM
影响因子:
16.8
作者:
通讯作者:
--
DOI:
10.1073/pnas.0530206100
发表时间:
2003-04-01
影响因子:
11.1
作者:
Gao, HB;Kadirjan-Kalbach, D;Osteryoung, KW
通讯作者:
Osteryoung, KW
DOI:
10.1083/jcb.200211046
发表时间:
2003-01-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Chen H;Detmer SA;Ewald AJ;Griffin EE;Fraser SE;Chan DC
通讯作者:
Chan DC
影响因子:
7.8
作者:
Hermann, G J;Thatcher, J W;Mills, J P;Hales, K G;Fuller, M T;Nunnari, J;Shaw, J M
通讯作者:
Shaw, J M