Abstract
Because mitochondria have outer and inner membranes, the fusion of two mitochondria requires the coordinated fusion of four lipid bilayers. Fusion of the outer membranes requires mitofusins. A new study published in Cell (Meeusen et al., 2006) shows that inner membrane fusion requires the dynamin-related protein Mgm1/OPA1.
MeSH terms
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Dynamins / metabolism
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GTP Phosphohydrolases / metabolism*
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GTP-Binding Proteins / metabolism
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Membrane Fusion*
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Membrane Proteins / metabolism
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Mitochondria / physiology*
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Mitochondria / ultrastructure
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Mitochondrial Membranes / physiology*
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Mitochondrial Proteins / metabolism
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Models, Biological
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Saccharomyces cerevisiae Proteins / metabolism
Substances
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MGM1 protein, S cerevisiae
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Membrane Proteins
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Mitochondrial Proteins
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Saccharomyces cerevisiae Proteins
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UGO1 protein, S cerevisiae
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FZO1 protein, S cerevisiae
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GTP Phosphohydrolases
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GTP-Binding Proteins
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Dynamins