ID   4.4.1.39
DE   C-phycoerythrin alpha-cysteine-82 phycoerythrobilin lyase.
CA   phycoerythrobilin-L-cysteinyl(82)-[C-phycoerythrin alpha-subunit] =
CA   (2R,3E)-phycoerythrobilin + apo-L-cysteinyl(82)-[C-phycoerythrin alpha-
CA   subunit].
CC   -!- The enzyme, characterized from the cyanobacterium Microchaete
CC       diplosiphon, catalyzes the attachment of the phycobilin chromophore
CC       (3E)-phycoerythrobilin (PEB) to cysteine 82 of the alpha subunit of
CC       the phycobiliprotein C-phycoerythrin.
CC   -!- The numbering used here corresponds to the enzyme from Microchaete
CC       diplosiphon, and could vary slightly in other organisms.
CC   -!- Activity is greatly enhanced in the presence of the chaperone-like
CC       protein CpeZ.
CC   -!- The reaction could also be catalyzed by EC 4.4.1.29, but much less
CC       efficiently.
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