Plays a role in the import of cytosolically synthesized preproteins into mitochondria. Binds the mature portion of precursor proteins. Interacts with cellular components, and possesses weak ATPase activity. May be a chaperone-like protein that helps to keep newly synthesized precursors in an unfolded import compatible state.
Cytoplasm . Mitochondrion outer membrane ; Peripheral membrane protein ; Cytoplasmic side .
Ubiquitous.
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