4.4.1.31: phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase

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For detailed information about phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase, go to the full flat file.

Word Map on EC 4.4.1.31

4.4.1.31

phycocyanin

chromophore

phycoerythrobilin

phycobilisomes

isomerization

apoproteins

cyanobacteria

phycobiliproteins

mastigocladus

heterodimeric

lyases

synechococcus

laminosus

chromophorylated

antenna

bilins

post-translationally

chromoprotein

adduct

phytochromobilin

phycobilin

phycoerythrin

isomerizing

biliproteins

tetrapyrrole

Reaction

[phycoerythrocyanin alpha-subunit]-Cys84-phycoviolobilin

Synonyms

PEC-Cys-R84 PCB lyase/isomerase, pecE, PecE/F, PecE/PecF, pecF, phycoviolobilin phycoerythrocyanin-alpha84-cystein-lyase, PVBPEC-lyase, RpcG

ECTree

4 Lyases

4.4 Carbon-sulfur lyases

4.4.1 Carbon-sulfur lyases (only sub-subclass identified to date)

4.4.1.31 phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase

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Results	in table
2	Activating Compound
3	AA Sequence
5	Cloned(Commentary)
1	Crystallization (Commentary)
2	General Information
3	General Stability
8	Inhibitors
4	kcat/KM [mM/s]
6	KM Value [mM]
3	Metals/Ions
1	Natural Substrates/ Products (Substrates)
14	Organism
1	Pathway
1	pH Optimum
1	pH Range
6	Protein Variants
1	Purification (Commentary)
1	Reaction
13	Reference
1	Storage Stability
14	Substrates and Products (Substrate)
1	Subunits
15	Synonyms
1	Systematic Name
3	Temperature Optimum [°C]
6	Turnover Number [1/s]

Systematic Name

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Systematic Name on EC 4.4.1.31 - phycoerythrocyanin alpha-cysteine-84 phycoviolobilin lyase/isomerase

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[phycoerythrocyanin alpha-subunit]-Cys84-phycoviolobilin:(2R,3E)-phycocyanobilin lyase/isomerase

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 beta subunit of the phycobiliprotein phycoerythrocyanin and its isomerization to phycoviolobilin.