Literature summary for 1.14.99.63 extracted from

Fernandez-Gonzalez, B.; Sandmann, G.; Vioque, A.
A new type of asymmetrically acting beta-carotene ketolase is required for the synthesis of echinenone in the cyanobacterium Synechocystis sp. PCC 6803 (1997), J. Biol. Chem., 272, 9728-9733 .

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Cloned(Commentary)

Cloned (Comment)	Organism
expression in an Escherichia coli strain able to accumulate beta-carotene	Synechocystis sp. PCC 6803

Organism

Organism	UniProt	Comment	Textmining
Synechocystis sp. PCC 6803	Q55808	-	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
additional information	the enzyme introduces an oxo group on only one of the two beta-ionone rings of beta-carotene to generate echinenone. No production of the the dioxo carotenoid canthaxanthin	Synechocystis sp. PCC 6803	?	-	?

Synonyms

Synonyms	Comment	Organism
CrtO	-	Synechocystis sp. PCC 6803
slr0088	-	Synechocystis sp. PCC 6803

General Information

General Information	Comment	Organism
malfunction	the photosynthetic activity of the crtO-deficient strain is not affected	Synechocystis sp. PCC 6803
metabolism	the enzyme is required for echinenone biosynthesis in Synechocystis. The enzyme is not required for normal growth under standard or high light conditions	Synechocystis sp. PCC 6803

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Release 2023.1 (January 2023)