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 + O₂ = 13¹-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester + NADP⁺ + H₂O.
CATALYTIC ACTIVITY: 13¹-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O₂ = 13¹-oxo-magnesium-protoporphyrin IX 13-monomethyl ester + NADP⁺ + 2 H₂O.
CATALYTIC ACTIVITY: 13¹-oxo-magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O₂ = divinylprotochlorophyllide + NADP⁺ + 2 H₂O.
COFACTOR: Iron (By similarity).
PATHWAY: Porphyrin biosynthesis; chlorophyll biosynthesis (light-independent).
SIMILARITY: Belongs to the acsF family.

Copyright

Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.

Cross-references

Sequence databases

EMBL

CT978603; CAK28379.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_001227732.1; -.

3D structure databases

ModBase

A5GU20.

Ontologies

GO:0005506;	Molecular function: iron ion binding (inferred from electronic annotation from HAMAP).
GO:0048529;	Molecular function: magnesium-protoporphyrin IX monomethyl ester (oxidative) cyclase activity (inferred from electronic annotation from HAMAP).
GO:0055114;	Biological process: oxidation reduction (inferred from electronic annotation from UniProtKB-KW).
GO:0015979;	Biological process: photosynthesis (inferred from electronic annotation from HAMAP).
QuickGo view.

Family and domain databases

HAMAP

MF_01840; -; 1.
PBIL [Tree]

InterPro

IPR008434; AcsF.
IPR003251; Rubrerythrin.
Graphical view of domain structure.

Pfam

PF02915; Rubrerythrin; 1.
Pfam graphical view of domain structure.

TIGR02029; AcsF; 1.

Genome annotation databases

GeneID

5157882; -.

GenomeReviews

CT978603_GR; SynRCC307_1476.

KEGG

syr:SynRCC307_1476; -.

CMR

A5GU20; SynRCC307_1476.

Other

UniRef

View cluster of proteins with at least 50% / 90% / 100% identity.

Keywords

Chlorophyll biosynthesis; Complete proteome; Iron; Metal-binding; NADP; Oxidoreductase; Photosynthesis.

Features

Feature table viewer

`Key`	`From To`	`Length`		`Description`	`FTId`
`CHAIN`	`1 360`	`360`		`Magnesium-protoporphyrin IX monomethyl ester [oxidative] cyclase.`	`PRO_1000070554`

Sequence information

Length: 360 AA [This is the length of the unprocessed precursor]

Molecular weight: 41621 Da [This is the MW of the unprocessed precursor]

CRC64: 0F43C7BBCA1E07DA [This is a checksum on the sequence]

        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

A5GU20 in FASTA format

View entry in original UniProtKB/Swiss-Prot format
View entry in raw text format (no links)
Report form for errors/updates in this UniProtKB/Swiss-Prot entry

	BLAST submission on ExPASy/SIB or at NCBI (USA)		Sequence analysis tools: ProtParam, ProtScale, Compute pI/Mw, PeptideMass, PeptideCutter, Dotlet (Java)
	ScanProsite, MotifScan		Submit a homology modeling request to SWISS-MODEL
	NPSA Sequence analysis tools