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Mitochondrial inner membrane translocase complex, subunit Tim23 (IPR005681)

Short name: Tim23

Overlapping homologous superfamilies


Family relationships



The mitochondrial protein translocase (MPT) family, which brings nuclearly encoded preproteins into mitochondria, is very complex with 19 currently identified protein constituents. These proteins include several chaperone proteins, four proteins of the outer membrane translocase (Tom) import receptor, five proteins of the Tom channel complex, five proteins of the inner membrane translocase (Tim) and three "motor" proteins.The inner membrane translocase is formed of a complex with a number of proteins, including the Tim17, Tim23 and Tim44 subunits. Tim17 and Tim23 are thought to form the translocation channel of the inner membrane.

GO terms

Biological Process

GO:0006886 intracellular protein transport

Molecular Function

GO:0015450 P-P-bond-hydrolysis-driven protein transmembrane transporter activity

Cellular Component

GO:0005744 TIM23 mitochondrial import inner membrane translocase complex

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.