ID   4.4.1.29
DE   phycobiliprotein cysteine-84 phycobilin lyase.
CA   (1) phycocyanobilin-L-cysteinyl(84)-[C-phycocyanin beta-subunit] =
CA   (2R,3E)-phycocyanobilin + apo-L-cysteinyl(84)-[C-phycocyanin beta-
CA   subunit].
CA   (2) phycocyanobilin-L-cysteinyl(84)-[phycoerythrocyanin beta-subunit] =
CA   (2R,3E)-phycocyanobilin + apo-L-cysteinyl(84)-[phycoerythrocyanin beta-
CA   subunit].
CA   (3) phycocyanobilin-L-cysteinyl(84)-[allophycocyanin alpha-subunit] =
CA   (2R,3E)-phycocyanobilin + apo-L-cysteinyl(84)-[allophycocyanin alpha-
CA   subunit].
CA   (4) phycocyanobilin-L-cysteinyl(84)-[allophycocyanin beta-subunit] =
CA   (2R,3E)-phycocyanobilin + apo-L-cysteinyl(84)-[allophycocyanin beta-
CA   subunit].
CA   (5) phycoerythrobilin-L-cysteinyl(84)-[C-phycoerythrin alpha-subunit] =
CA   (2R,3E)-phycoerythrobilin + apo-L-cysteinyl(84)-[C-phycoerythrin alpha-
CA   subunit].
CA   (6) phycoerythrobilin-L-cysteinyl(84)-[C-phycoerythrin beta-subunit] =
CA   (2R,3E)-phycoerythrobilin + apo-L-cysteinyl(84)-[C-phycoerythrin beta-
CA   subunit].
CC   -!- The enzyme, found in cyanobacteria and red algae, catalyzes the
CC       attachment of phycobilin chromophores to cysteine 84 of several
CC       phycobiliproteins (the numbering used here corresponds to the enzyme
CC       from Anabaena, in other organisms the number may vary slightly).
CC   -!- It can attach phycocyanobilin to the beta subunits of C-phycocyanin
CC       and phycoerythrocyanin and to both subunits of allophycocyanin.
CC   -!- In addition, it can attach phycoerythrobilin to both subunits of
CC       C-phycoerythrin.
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