CcmB

• PFAM accession number: PF03379
• Interpro abstract (IPR003544):

  This entry represents cytochrome c-type biogenesis protein CcmB (HelB) from bacteria and plants.

  CcmB is the product of one of a cluster of ccm genes that are necessary for cytochrome c biosynthesis in bacteria and is required for the export of haem to the periplasm [ (PUBMED:7635817) ]. Plant mitochondria have kept a cytochrome c biogenesis pathway inherited from their prokaryote ancestor and also have a CcmB homologue, but in plants the ccm genes are distributed between the nuclear and the mitochondrial genomes instead of being coded in a single operon [ (PUBMED:11418186) (PUBMED:18033741) ].

• GO process: cytochrome complex assembly (GO:0017004), heme transport (GO:0015886)
• GO component: membrane (GO:0016020)
• GO function: heme transmembrane transporter activity (GO:0015232)

This is a PFAM domain. For full annotation and more information, please see the PFAM entry CcmB