Two mitofusin proteins, mammalian homologues of FZO, with distinct functions are both required for mitochondrial fusion.

Abstract excerpt

Mitochondria are dynamic organelles that undergo frequent fission and fusion or branching. Although these morphologic changes are considered crucial for cellular functions, the underlying mechanisms remain elusive, especially in mammalian cells. We characterized two rat mitochondrial outer membrane proteins, Mfn1 and Mfn2, with distinct tissue expressions, that are homologous to Drosophila Fzo, a GTPase involved...

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