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ENZYME entry: EC 4.4.1.39

Accepted Name
C-phycoerythrin alpha-cysteine-82 phycoerythrobilin lyase.
Reaction catalysed
phycoerythrobilin-L-cysteinyl(82)-[C-phycoerythrin alpha-subunit] <=> (2R,3E)-phycoerythrobilin + apo-L-cysteinyl(82)-[C-phycoerythrin alpha-subunit]
Comment(s)
  • The enzyme, characterized from the cyanobacterium Microchaete diplosiphon, catalyzes the attachment of the phycobilin chromophore (3E)-phycoerythrobilin (PEB) to cysteine 82 of the alpha subunit of the phycobiliprotein C-phycoerythrin.
  • The numbering used here corresponds to the enzyme from Microchaete diplosiphon, and could vary slightly in other organisms.
  • Activity is greatly enhanced in the presence of the chaperone-like protein CpeZ.
  • The reaction could also be catalyzed by EC 4.4.1.29, but much less efficiently.
Cross-references
BRENDA4.4.1.39
EC2PDB4.4.1.39
ExplorEnz4.4.1.39
PRIAM enzyme-specific profiles4.4.1.39
KEGG Ligand Database for Enzyme Nomenclature4.4.1.39
IUBMB Enzyme Nomenclature4.4.1.39
IntEnz4.4.1.39
MEDLINEFind literature relating to 4.4.1.39
MetaCyc4.4.1.39
Rhea expert-curated reactions4.4.1.39

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.-.-.-