EC Explorer

4.4.1.30

phycobiliprotein β-cysteine-155 phycobilin lyase

(1) [C-phycocyanin β-subunit]-Cys¹⁵⁵-phycocyanobilin = apo-[C-phycocyanin β-subunit] + (2R,3E)-phycocyanobilin;;(2) [phycoerythrocyanin β-subunit]-Cys¹⁵⁵-phycocyanobilin = apo-[phycoerythrocyanin β-subunit] + (2R,3E)-phycocyanobilin

cpcT (gene name), cpeT1 (gene name), cpcT1 (gene name)

[phycobiliprotein β-subunit]-Cys¹⁵⁵-phycocyanobilin:phycocyanobilin lyase

The enzyme, found in cyanobacteria and red algae, catalyses the attachment of the phycobilin chromophore phycocyanobilin to cysteine 155 of the β subunits of the phycobiliproteins C-phycocyanin and phycoerythrocyanin. The numbering used here corresponds to the enzyme from Anabaena, and could vary slightly in other organisms.

created 2015