Protoporphyrinogen IX dehydrogenase (menaquinone)

Protoporphyrinogen IX dehydrogenase (menaquinone) (EC 1.3.5.3, HemG) is an enzyme with systematic name protoporphyrinogen IX:menaquinone oxidoreductase.^[1] This enzyme catalyses the following chemical reaction

protoporphyrinogen IX + 3 menaquinone ${\displaystyle \rightleftharpoons }$ protoporphyrin IX + 3 menaquinol

Protoporphyrinogen IX dehydrogenase (menaquinone)
Identifiers
EC no.	1.3.5.3
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

This enzyme enables Escherichia coli to synthesize heme in both aerobic and anaerobic environments.