Article ; Online: From dynamin related proteins structures and oligomers to membrane fusion mediated by mitofusins.
Biochimica et biophysica acta. Bioenergetics
2022 Volume 1863, Issue 8, Page(s) 148913
Abstract: Mitochondria assemble in a highly dynamic network where interconnected tubules evolve in length and size through regulated cycles of fission and fusion of mitochondrial membranes thereby adapting to cellular needs. Mitochondrial fusion and fission ... ...
Abstract | Mitochondria assemble in a highly dynamic network where interconnected tubules evolve in length and size through regulated cycles of fission and fusion of mitochondrial membranes thereby adapting to cellular needs. Mitochondrial fusion and fission processes are mediated by specific sets of mechano-chemical large GTPases that belong to the Dynamin-Related Proteins (DRPs) super family. DRPs bind to cognate membranes and auto-oligomerize to drive lipid bilayers remodeling in a nucleotide dependent manner. Although structural characterization and mechanisms of DRPs that mediate membrane fission are well established, the capacity of DRPs to mediate membrane fusion is only emerging. In this review, we discuss the distinct structures and mechanisms of DRPs that trigger the anchoring and fusion of biological membranes with a specific focus on mitofusins that are dedicated to the fusion of mitochondrial outer membranes. In particular, we will highlight oligomeric assemblies of distinct DRPs and confront their mode of action against existing models of mitofusins assemblies with emphasis on recent biochemical, structural and computational reports. As we will see, the literature brings valuable insights into the presumed macro-assemblies mitofusins may form during anchoring and fusion of mitochondrial outer membranes. |
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MeSH term(s) | Dynamins/chemistry ; Dynamins/metabolism ; GTP Phosphohydrolases/metabolism ; Lipid Bilayers ; Membrane Fusion ; Nucleotides |
Chemical Substances | Lipid Bilayers ; Nucleotides ; GTP Phosphohydrolases (EC 3.6.1.-) ; Dynamins (EC 3.6.5.5) |
Language | English |
Publishing date | 2022-08-31 |
Publishing country | Netherlands |
Document type | Journal Article ; Review ; Research Support, Non-U.S. Gov't |
ZDB-ID | 60-7 |
ISSN | 1879-2650 ; 1879-2596 ; 1879-260X ; 1872-8006 ; 1879-2642 ; 1879-2618 ; 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399 |
ISSN (online) | 1879-2650 ; 1879-2596 ; 1879-260X ; 1872-8006 ; 1879-2642 ; 1879-2618 |
ISSN | 0006-3002 ; 0005-2728 ; 0005-2736 ; 0304-4165 ; 0167-4838 ; 1388-1981 ; 0167-4889 ; 0167-4781 ; 0304-419X ; 1570-9639 ; 0925-4439 ; 1874-9399 |
DOI | 10.1016/j.bbabio.2022.148913 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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