Literature summary for 1.14.13.81 extracted from

Minamizaki, K.; Mizoguchi, T.; Goto, T.; Tamiaki, H.; Fujita, Y.
Identification of two homologous genes, chlAI and chlAII, that are differentially involved in isocyclic ring formation of chlorophyll a in the Cyanobacterium Synechocystis sp. PCC 6803 (2008), J. Biol. Chem., 283, 2684-2692.

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Cloned(Commentary)

Cloned (Comment)	Organism
genes chlAI, chlAII, slr0905, sll1242, or slr0309, expression of wild-type and mutants enzymes, expression analysis, overview	Synechocystis sp. PCC 6803

Protein Variants

Protein Variants	Comment	Organism
additional information	construction of a mutants lacking chlAI, chlAII, slr0905, sll1242, or slr0309, respectively, the DELTAchlAI mutant fails to grow under aerobic conditions with anomalous accumulation of a pigment with fluorescence emission peak at 595 nm, the growth defect is restored by the cultivation under oxygen-limited micro-oxic conditions. MPE accumulation is also detected in DELTAchlAII mutant grown under microoxic conditions, but not in any of the bchE mutants. The phenotype is consistent with the expression pattern of two chlA genes: chlAII was induced under micro-oxic conditions in contrast to the constitutive expression of chlAI, phenotypes, overview	Synechocystis sp. PCC 6803

Metals/Ions

Metals/Ions	Comment	Organism	Structure
Mg2+	required	Synechocystis sp. PCC 6803

Organism

Organism	UniProt	Comment	Textmining
Synechocystis sp. PCC 6803	-	two acsF-like genes, sll1214 or chlAI and sll1874 orchlAII, and three bchE-like genes, slr0905, sll1242, and slr0309	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
additional information	AcsF and BchE perform incorporation of an oxygen atom from molecular oxygen and water into the C-13 position of Mg-protoporphyrin IX monomethylester, respectively. ChlAI is the sole MPE cyclase system under aerobic conditions and the induced ChlAII operates together with ChlAI under micro-oxic conditions	Synechocystis sp. PCC 6803	?	-	?

Synonyms

Synonyms	Comment	Organism
AcsF	-	Synechocystis sp. PCC 6803
BChE	-	Synechocystis sp. PCC 6803
Mg-protoporphyrin IX monomethylester cyclase system	-	Synechocystis sp. PCC 6803
MPE cyclase system	-	Synechocystis sp. PCC 6803
oxygen-dependent Mg-protoporphyrin IX monomethylester cyclase system	-	Synechocystis sp. PCC 6803
oxygen-independent Mg-protoporphyrin IX monomethylester cyclase system	-	Synechocystis sp. PCC 6803

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Release 2023.1 (January 2023)