1.3.7.5 biliverdin XIIIalpha + reduced ferredoxin - Anabaena sp. (3E)-isophytochromobilin + oxidized ferredoxin - ? 372575 1.3.7.5 biliverdin XIIIalpha + reduced ferredoxin Synechococcus ferredoxin Anabaena sp. (3E)-isophytochromobilin + oxidized ferredoxin - ? 372575 1.3.7.5 biliverdin XIIIalpha + reduced ferredoxin - Anabaena sp. (3Z)-isophytochromobilin + oxidized ferredoxin - ? 372576 1.3.7.5 biliverdin XIIIalpha + reduced ferredoxin Synechococcus ferredoxin Anabaena sp. (3Z)-isophytochromobilin + oxidized ferredoxin - ? 372576 1.3.7.5 biliverdin XIIIalpha + reduced ferredoxin - Synechocystis sp. ? + oxidized ferredoxin - ? 414377 1.3.7.5 biliverdin XIIIalpha + reduced ferredoxin a synthetic substrate that lacks an exo-vinyl group Synechocystis sp. ? + oxidized ferredoxin - ? 414377 1.3.7.5 additional information semisynthesis of mono- and diamides of biliverdin IXalpha, that function as substrates. The enzyme is accommodating to amidation of the propionic acid side chains of biliverdin IXalpha, which does not require free carboxylic acid side chains to yield its phytobilin product, phycocyanobilin. Bilin amides are assembled with BV-type apophytochromes, demonstrating a role for the 8-propionate in the formation of the spectroscopically native Pr dark states of the biliprotein photosensors. Neither ionizable propionate side chain proves to be essential to primary photoisomerization for BV-type phytochrome. No activity with biliverdin XIIIalpha diamide , but biliverdinXIII diacid is converted into the iso-PthetaB product with moderate yield Anabaena sp. ? - ? 89 1.3.7.5 additional information semisynthesis of mono- and diamides of biliverdin IXalpha, that function as substrates. The enzyme is accommodating to amidation of the propionic acid side chains of biliverdin IXalpha, which does not require free carboxylic acid side chains to yield its phytobilin product, phycocyanobilin. Bilin amides are assembled with BV-type apophytochromes, demonstrating a role for the 8-propionate in the formation of the spectroscopically native Pr dark states of the biliprotein photosensors. Neither ionizable propionate side chain proves to be essential to primary photoisomerization for BV-type phytochrome. No activity with biliverdin XIIIalpha diamide , but biliverdinXIII diacid is converted into the iso-PthetaB product with moderate yield Anabaena sp. PCC 7120 ? - ? 89 1.3.7.5 biliverdin XIII + reduced ferredoxin - Anabaena sp. phycocyanobilin + oxidized ferredoxin biliverdin XIII contains two endovinyl groups, so PcyA can convert either (or both) to an ethylidene ? 426032 1.3.7.5 biliverdin XIIIalpha monoamide + reduced ferredoxin - Anabaena sp. ? + oxidized ferredoxin mixture of products ? 426033