Reviewed, UniProtKB/Swiss-Prot A5GU20 (ACSF_SYNR3)

Names and origin

Protein names

Recommended name:
    Magnesium-protoporphyrin IX monomethyl ester [oxidative] cyclase
      Short name=Mg-protoporphyrin IX monomethyl ester oxidative cyclase
    EC=1.14.13.81

Gene names

Name:	acsF
Ordered Locus Names:	SynRCC307_1476

Organism

Synechococcus sp. (strain RCC307) [Complete proteome] [HAMAP]

Taxonomic identifier

316278 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Chroococcales › Synechococcus

Protein attributes

Sequence length	360 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Catalyzes the formation of the isocyclic ring in chlorophyll biosynthesis. Mediates the cyclase reaction, which results in the formation of divinylprotochlorophyllide (Pchlide) characteristic of all chlorophylls from magnesium-protoporphyrin IX 13-monomethyl ester (MgPMME) By similarity.
Catalytic activity	Magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O(2) = 13(1)-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester + NADP(+) + H(2)O. 13(1)-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O(2) = 13(1)-oxo-magnesium-protoporphyrin IX 13-monomethyl ester + NADP(+) + 2 H(2)O. 13(1)-oxo-magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O(2) = divinylprotochlorophyllide + NADP(+) + 2 H(2)O.
Cofactor	Iron By similarity.
Pathway	Porphyrin biosynthesis; chlorophyll biosynthesis (light-independent).
Sequence similarities	Belongs to the acsF family.

Ontologies

Keywords
Biological process	Chlorophyll biosynthesis Photosynthesis
Ligand	Iron Metal-binding NADP
Molecular function	Oxidoreductase
Technical term	Complete proteome
Gene Ontology (GO)
Biological process	chlorophyll biosynthetic process Inferred from electronic annotation. Source: InterPro oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW photosynthesis Inferred from electronic annotation. Source: HAMAP
Molecular function	iron ion binding Inferred from electronic annotation. Source: HAMAP magnesium-protoporphyrin IX monomethyl ester (oxidative) cyclase activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Chain	1 – 360	360	Magnesium-protoporphyrin IX monomethyl ester [oxidative] cyclase		PRO_1000070554

Sequences

	Sequence		Length	Mass (Da)
	A5GU20-1 [UniParc]. Last modified June 12, 2007. Version 1. Checksum: 0F43C7BBCA1E07DA	FASTA	360	41,621
	10 20 30 40 50 60 MVPPTAIAEA SRSGGEPAIK DPVKDTILTP RFYTTDFEAM AAMDLRPNQE ELEAICEEFR 70 80 90 100 110 120 KDYNRHHFVR NEAFDGAADK LDPETRRVFV EFLEQSCTSE FSGFLLYKEL SRRIKQKNPL 130 140 150 160 170 180 LAECFAHMAR DEARHAGFLN KAMGDFGVQL DLGFLTANKA YTFFKPKFIF YATYLSEKIG 190 200 210 220 230 240 YWRYIAIYRH LEQNPDSKIF PIFNFFENWC QDENRHGDFF DALMKAQPSS VRGLQARLWC 250 260 270 280 290 300 RFFLLAVFAT MYVRDVARKE FYEALGLDAR EYDKYVIAKT NETSARVFPV VLNVDHPKFY 310 320 330 340 350 360 ERLERIVGNN NALSQADASG ASAPVRLLRK LPFWGANALE MAKLFFAAPI RSENYQPAIR

References

[1]	Genoscope Submitted (MAY-2006) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CT978603 Genomic DNA. Translation: CAK28379.1.
RefSeq	YP_001227732.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	5157882.
GenomeReviews	Gene locus SynRCC307_1476 in contig CT978603_GR.
KEGG	syr:SynRCC307_1476.
Organism-specific databases
CMR	Search...
Family and domain databases
HAMAP	MF_01840. [Tree]
InterPro	IPR008434. AcsF. IPR003251. Rubrerythrin. [Graphical view]
Pfam	PF02915. Rubrerythrin. 1 hit. [Graphical view]
TIGRFAMs	TIGR02029. AcsF. 1 hit.
ProtoNet	Search...

Entry information

Entry name

ACSF_SYNR3

Accession

Primary (citable) accession number: A5GU20

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 5, 2008
Last sequence update:	June 12, 2007
Last modified:	November 25, 2008
This is version 12 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)