The Enzyme Database

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Accepted name: C-phycoerythrin β-cysteine-48/59 phycoerythrobilin lyase
Reaction: a [C-phycoerythrin β-subunit]-Cys48/59-phycoerythrobilin = apo-[C-phycoerythrin β-subunit] + (3E)-phycoerythrobilin
Other name(s): cpeF (gene name)
Systematic name: [C-phycoerythrin β-subunit]-Cys48/59-phycoerythrobilin:phycoerythrobilin lyase
Comments: The enzyme, characterized from the cyanobacterium Microchaete diplosiphon, catalyses the attachment of the phycobilin chromophore (3E)-phycoerythrobilin (PEB) to cysteine 48 and 59 of the β subunits of the phycobiliprotein C-phycoerythrin. The enzyme first ligates the A ring of PEB to cysteine-48, followed by the attachment of the D ring to cysteine-59. The numbering used here corresponds to the enzyme from Microchaete diplosiphon, and could vary slightly in other organisms. The reaction requires the presence of the chaperone-like protein CpeZ.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Kronfel, C.M., Hernandez, C.V., Frick, J.P., Hernandez, L.S., Gutu, A., Karty, J.A., Boutaghou, M.N., Kehoe, D.M., Cole, R.B. and Schluchter, W.M. CpeF is the bilin lyase that ligates the doubly linked phycoerythrobilin on β-phycoerythrin in the cyanobacterium Fremyella diplosiphon. J. Biol. Chem. 294 (2019) 3987–3999. [DOI] [PMID: 30670589]
[EC created 2021]

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