Reviewed, UniProtKB/Swiss-Prot Q31AS9 (ACSF_PROM9)

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:	PMT9312_0956

Organism

Prochlorococcus marinus (strain MIT 9312) [Complete proteome] [HAMAP]

Taxonomic identifier

74546 [NCBI]

Taxonomic lineage

Bacteria › Cyanobacteria › Prochlorophytes › Prochlorococcaceae › Prochlorococcus

Protein attributes

Sequence length	390 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 + O2 = 131-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester + NADP+ + H2O. HAMAP MF_01840 131-hydroxy-magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O2 = 131-oxo-magnesium-protoporphyrin IX 13-monomethyl ester + NADP+ + 2 H2O. HAMAP MF_01840 131-oxo-magnesium-protoporphyrin IX 13-monomethyl ester + NADPH + O2 = divinylprotochlorophyllide + NADP+ + 2 H2O. HAMAP MF_01840
Cofactor	Iron By similarity.
Pathway	Porphyrin biosynthesis; chlorophyll biosynthesis (light-independent). HAMAP MF_01840
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: UniProtKB-KW 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 – 390	390	Magnesium-protoporphyrin IX monomethyl ester [oxidative] cyclase HAMAP MF_01840		PRO_1000070548

Sequences

	Sequence		Length	Mass (Da)
	Q31AS9-1 [UniParc]. Last modified December 6, 2005. Version 1. Checksum: 8013C443F31AF3B2	FASTA	390	45,810
	10 20 30 40 50 60 MSQSIIESKN KKDVNNGKIP AKETILSPRF YTTDFEAMEN MDLSINEEEL EAICEEFRKD 70 80 90 100 110 120 YNRHHFVRNS EFDGAAEKLD PETRELFVDF LEGSCTSEFS GFLLYKELSR RIKDKNPLLA 130 140 150 160 170 180 ECFAHMARDE ARHAGFLNKS MSDFGLQLDL GFLTANKDYT YFPPRSIFYA TYLSEKIGYW 190 200 210 220 230 240 RYIAIYRHLE KNPDSKIFPL FNYFENWCQD ENRHGDFFDA LMKAQPRTVK SLSQKINIGG 250 260 270 280 290 300 TTFTHPLFDY FHRFRYFLNN LPITSKLWSR FFLLAVFATM YARDLGIKKD FYSSLGLDAR 310 320 330 340 350 360 EYDQYVINKT NETSARVFPV VLDVYDKSFY GRLDKIVENN KVLSNIANSE ENKVSKTLKK 370 380 390 LPTYLSNGYQ LLRLYLLKPL DSKDFQPSIR

References

[1]

"Complete sequence of Prochlorococcus marinus str. MIT 9312." Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T., Hammon N., Israni S., Pitluck S., Thiel J., Schmutz J., Larimer F., Land M., Kyrpides N., Lykidis A., Richardson P. Submitted (JUL-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	CP000111 Genomic DNA. Translation: ABB50016.1.
RefSeq	YP_397452.1.
3D structure databases
ModBase	Search...
Protein-protein interaction databases
STRING	Q31AS9.
Genome annotation databases
GeneID	3765759.
GenomeReviews	Gene locus PMT9312_0956 in contig CP000111_GR.
KEGG	pmi:PMT9312_0956.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q31AS9.
OMA	SMSDFGL.
Enzyme and pathway databases
BioCyc	PMAR74546:PMT9312_0956-MON.
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_PROM9

Accession

Primary (citable) accession number: Q31AS9

Entry history

Integrated into UniProtKB/Swiss-Prot:	February 5, 2008
Last sequence update:	December 6, 2005
Last modified:	November 3, 2009
This is version 28 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)