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ENZYME entry: EC 4.4.1.29

Accepted Name
Phycobiliprotein cysteine-84 phycobilin lyase.
Reaction catalysed
  • [C-phycocyanin beta-subunit]-Cys(84)-phycocyanobilin <=> apo-[C-phycocyanin beta-subunit] + (2R,3E)-phycocyanobilin
  • [Phycoerythrocyanin beta-subunit]-Cys(84)-phycocyanobilin <=> apo-[phycoerythrocyanin beta-subunit] + (2R,3E)-phycocyanobilin
  • [Allophycocyanin alpha-subunit]-Cys(84)-phycocyanobilin <=> apo-[allophycocyanin alpha-subunit] + (2R,3E)-phycocyanobilin
  • [Allophycocyanin beta-subunit]-Cys(84)-phycocyanobilin <=> apo-[allophycocyanin beta-subunit] + (2R,3E)-phycocyanobilin
  • [C-phycoerythrin alpha-subunit]-Cys(84)-phycoerythrobilin <=> apo-[C-phycoerythrin alpha-subunit] + (2R,3E)-phycoerythrobilin
  • [C-phycoerythrin beta-subunit]-Cys(84)-phycoerythrobilin <=> apo-[C-phycoerythrin beta-subunit] + (2R,3E)-phycoerythrobilin
Comment(s)
  • The enzyme, found in cyanobacteria and red algae, catalyzes the attachment of phycobilin chromophores to cysteine 84 of several phycobiliproteins (the numbering used here corresponds to the enzyme from Anabaena, in other organisms the number may vary slightly).
  • It can attach phycocyanobilin to the beta subunits of C-phycocyanin and phycoerythrocyanin and to both subunits of allophycocyanin.
  • In addition, it can attach phycoerythrobilin to both subunits of C-phycoerythrin.
Cross-references
BRENDA4.4.1.29
EC2PDB4.4.1.29
ExplorEnz4.4.1.29
PRIAM enzyme-specific profiles4.4.1.29
KEGG Ligand Database for Enzyme Nomenclature4.4.1.29
IUBMB Enzyme Nomenclature4.4.1.29
IntEnz4.4.1.29
MEDLINEFind literature relating to 4.4.1.29
MetaCyc4.4.1.29

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