The Enzyme Database

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Accepted name: R-phycocyanin α-cysteine-84 phycourobilin lyase/isomerase
Reaction: [R-phycocyanin α-subunit]-Cys84-phycourobilin = apo-[R-phycocyanin α-subunit] + (2R,3E)-phycoerythrobilin
Other name(s): rpcG (gene name)
Systematic name: [R-phycocyanin α-subunit]-Cys84-phycourobilin:(2R,3E)-phycoerythrobilin lyase/isomerase
Comments: The enzyme, characterized from the cyanobacterium Synechococcus sp. WH8102, catalyses the covalent attachment of the phycobilin chromophore phycoerythrobilin to cysteine 84 of the α subunit of the phycobiliprotein R-phycocyanin and its isomerization to phycourobilin.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Blot, N., Wu, X.J., Thomas, J.C., Zhang, J., Garczarek, L., Bohm, S., Tu, J.M., Zhou, M., Ploscher, M., Eichacker, L., Partensky, F., Scheer, H. and Zhao, K.H. Phycourobilin in trichromatic phycocyanin from oceanic cyanobacteria is formed post-translationally by a phycoerythrobilin lyase-isomerase. J. Biol. Chem. 284 (2009) 9290–9298. [DOI] [PMID: 19182270]
[EC created 2015]

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