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Your query returned 5 entries. Printable version
EC | 1.3.7.5 | ||||||||
Accepted name: | phycocyanobilin:ferredoxin oxidoreductase | ||||||||
Reaction: | (3Z)-phycocyanobilin + 4 oxidized ferredoxin = biliverdin IXα + 4 reduced ferredoxin | ||||||||
For diagram of biliverdin metabolism, click here | |||||||||
Systematic name: | (3Z)-phycocyanobilin:ferredoxin oxidoreductase | ||||||||
Comments: | Catalyses the four-electron reduction of biliverdin IXα (2-electron reduction at both the A and D rings). Reaction proceeds via an isolatable 2-electron intermediate, 181,182-dihydrobiliverdin. Flavodoxins can be used instead of ferredoxin. The direct conversion of biliverdin IXα (BV) to (3Z)-phycocyanolbilin (PCB) in the cyanobacteria Synechocystis sp. PCC 6803, Anabaena sp. PCC7120 and Nostoc punctiforme is in contrast to the proposed pathways of PCB biosynthesis in the red alga Cyanidium caldarium, which involves (3Z)-phycoerythrobilin (PEB) as an intermediate [2] and in the green alga Mesotaenium caldariorum, in which PCB is an isolable intermediate. | ||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 347401-12-1 | ||||||||
References: |
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EC | 4.4.1.29 | ||||||||
Accepted name: | phycobiliprotein cysteine-84 phycobilin lyase | ||||||||
Reaction: | (1) [C-phycocyanin β-subunit]-Cys84-phycocyanobilin = apo-[C-phycocyanin β-subunit] + (2R,3E)-phycocyanobilin (2) [phycoerythrocyanin β-subunit]-Cys84-phycocyanobilin = apo-[phycoerythrocyanin β-subunit] + (2R,3E)-phycocyanobilin (3) [allophycocyanin α-subunit]-Cys84-phycocyanobilin = apo-[allophycocyanin α-subunit] + (2R,3E)-phycocyanobilin (4) [allophycocyanin β-subunit]-Cys84-phycocyanobilin = apo-[allophycocyanin β-subunit] + (2R,3E)-phycocyanobilin (5) [C-phycoerythrin α-subunit]-Cys84-phycoerythrobilin = apo-[C-phycoerythrin α-subunit] + (2R,3E)-phycoerythrobilin (6) [C-phycoerythrin β-subunit]-Cys84-phycoerythrobilin = apo-[C-phycoerythrin β-subunit] + (2R,3E)-phycoerythrobilin |
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Glossary: | phycocyanobilin = 3,31-didehydro-2,3-dihydromesobiliverdin phycoerythrobilin = 3,31,181,182-tetradehydro-2,3,15,16-tetrahydromesobiliverdin |
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Other name(s): | cpcS (gene name); cpeS (gene name); cpcS1 (gene name); cpcU (gene name); phycocyanobilin:Cys-β84-phycobiliprotein lyase | ||||||||
Systematic name: | [phycobiliprotein]-Cys84-phycobilin:phycobilin lyase | ||||||||
Comments: | The enzyme, found in cyanobacteria and red algae, catalyses the attachment of phycobilin chromophores to cysteine 84 of several phycobiliproteins (the numbering used here corresponds to the enzyme from Anabaena, in other organisms the number may vary slightly). It can attach phycocyanobilin to the β subunits of C-phycocyanin and phycoerythrocyanin and to both subunits of allophycocyanin. In addition, it can attach phycoerythrobilin to both subunits of C-phycoerythrin. | ||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||||
References: |
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EC | 4.4.1.30 | ||||||||
Accepted name: | phycobiliprotein β-cysteine-155 phycobilin lyase | ||||||||
Reaction: | (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 |
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Glossary: | phycocyanobilin = 3,31-didehydro-2,3-dihydromesobiliverdin | ||||||||
Other name(s): | cpcT (gene name); cpeT1 (gene name); cpcT1 (gene name) | ||||||||
Systematic name: | [phycobiliprotein β-subunit]-Cys155-phycocyanobilin:phycocyanobilin lyase | ||||||||
Comments: | 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. | ||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||||
References: |
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EC | 4.4.1.31 | ||||||||
Accepted name: | phycoerythrocyanin α-cysteine-84 phycoviolobilin lyase/isomerase | ||||||||
Reaction: | [phycoerythrocyanin α-subunit]-Cys84-phycoviolobilin = apo-[phycoerythrocyanin α-subunit] + (2R,3E)-phycocyanobilin | ||||||||
Glossary: | phycocyanobilin = 3,31-didehydro-2,3-dihydromesobiliverdin phycoviolobilin = 15,16-dihydrobiliverdin IIIa |
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Other name(s): | pecE (gene name); pecF (gene name); phycoviolobilin phycoerythrocyanin-α84-cystein-lyase; PecE/PecF; PEC-Cys-R84 PCB lyase/isomerase | ||||||||
Systematic name: | [phycoerythrocyanin α-subunit]-Cys84-phycoviolobilin:(2R,3E)-phycocyanobilin lyase/isomerase | ||||||||
Comments: | The enzyme, characterized from the cyanobacteria Nostoc sp. PCC 7120 and Mastigocladus laminosus, catalyses the covalent attachment of the phycobilin chromophore phycocyanobilin to cysteine 84 of the β subunit of the phycobiliprotein phycoerythrocyanin and its isomerization to phycoviolobilin. | ||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||||
References: |
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EC | 4.4.1.32 | ||||||||
Accepted name: | C-phycocyanin α-cysteine-84 phycocyanobilin lyase | ||||||||
Reaction: | [C-phycocyanin α-subunit]-Cys84-phycocyanobilin = apo-[C-phycocyanin α-subunit] + (2R,3E)-phycocyanobilin | ||||||||
Glossary: | phycocyanobilin = 3,31-didehydro-2,3-dihydromesobiliverdin | ||||||||
Other name(s): | cpcE (gene name); cpcF (gene name) | ||||||||
Systematic name: | [C-phycocyanin α-subunit]-Cys84-phycocyanobilin:(2R,3E)-phycocyanobilin lyase | ||||||||
Comments: | The enzyme, characterized from the cyanobacterium Synechococcus elongatus PCC 7942, catalyses the covalent attachment of the phycobilin chromophore phycocyanobilin to cysteine 84 of the α subunit of the phycobiliprotein C-phycocyanin. | ||||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||||
References: |
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