phycoviolobilin-L-cysteinyl(84)-[phycoerythrocyanin alpha-subunit] => apo-L-cysteinyl(84)-[phycoerythrocyanin alpha-subunit] + (2R,3E)-phycocyanobilin
phycoviolobilin-l-cysteinyl(84)-[phycoerythrocyanin alpha-subunit] => apo-l-cysteinyl(84)-[phycoerythrocyanin alpha-subunit] + (2r,3e)-phycocyanobilin