EC 4.4.1.33 - R-phycocyanin α-cysteine-84 phycourobilin lyase/isomerase

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IntEnz Enzyme Nomenclature
EC 4.4.1.33

Names

Accepted name:
R-phycocyanin α-cysteine-84 phycourobilin lyase/isomerase
Other name:
rpcG (gene name)
Systematic name:
[R-phycocyanin α-subunit]-Cys84-phycourobilin:(2R,3E)-phycoerythrobilin lyase/isomerase

Reaction

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

Enzymes and pathways: NC-IUBMB , BRENDA , ExplorEnz , ENZYME@ExPASy , KEGG , MetaCyc , UniPathway
Structural data: CSA , EC2PDB

References

  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., Zhao, K. H.
    Phycourobilin in trichromatic phycocyanin from oceanic cyanobacteria is formed post-translationally by a phycoerythrobilin lyase-isomerase.
    J. Biol. Chem. 284: 9290-9298 (2009). [PMID: 19182270]

[EC 4.4.1.33 created 2015]