Uroporphyrinogen-III C-methyltransferase
     (Urogen III methylase)
     (EC 2.1.1.107)
     (SUMT)
     (Uroporphyrinogen III methylase)
     (UROM)
Precorrin-2 dehydrogenase
     (EC 1.3.1.76)
Sirohydrochlorin ferrochelatase
     (EC 4.99.1.4)

Gene name

	Name:	cysG
	OrderedLocusNames:	ACIAD2934

From

Acinetobacter sp. (strain ADP1)

[TaxID: 62977]

[HAMAP proteome]

Taxonomy

Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales; Moraxellaceae; Acinetobacter.

Protein existence

3: Inferred from homology;

References

[1]

NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
DOI=10.1093/nar/gkh910; PubMed=15514110 [NCBI, ExPASy, EBI, Israel, Japan]
Barbe V., Vallenet D., Fonknechten N., Kreimeyer A., Oztas S., Labarre L., Cruveiller S., Robert C., Duprat S., Wincker P., Ornston L.N., Weissenbach J., Marliere P., Cohen G.N., Medigue C.;
"Unique features revealed by the genome sequence of Acinetobacter sp. ADP1, a versatile and naturally transformation competent bacterium.";
Nucleic Acids Res. 32:5766-5779(2004).

Comments

FUNCTION: Multifunctional enzyme that catalyze the SAM-dependent methylation of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 and then position C-12 or C-18 to form trimethylpyrrocorphin 2. It also catalyzes the conversion of precorrin-2 into siroheme. This reaction consist of the NAD-dependent oxidation of precorrin-2 into sirohydrochlorin and its subsequent ferrochelation into siroheme (By similarity).
CATALYTIC ACTIVITY: S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1.
CATALYTIC ACTIVITY: S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2.
CATALYTIC ACTIVITY: Precorrin-2 + NAD⁺ = sirohydrochlorin + NADH.
CATALYTIC ACTIVITY: Siroheme + 2 H⁺ = sirohydrochlorin + Fe²⁺.
PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1 .
PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis; sirohydrochlorin from precorrin-2: step 1/1 .
PATHWAY: Porphyrin metabolism; siroheme biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1 .
PATHWAY: Porphyrin metabolism; siroheme biosynthesis; siroheme from sirohydrochlorin: step 1/1 .
PATHWAY: Porphyrin metabolism; siroheme biosynthesis; sirohydrochlorin from precorrin-2: step 1/1 .
SIMILARITY: Belongs to the precorrin methyltransferase 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

CR543861; CAG69649.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_047471.1; -.

3D structure databases

ModBase

Q6F8G6.

Enzyme and pathway databases

BioCyc

ASP62977:ACIAD2934-MON; -.

Ontologies

GO:0004325;	Molecular function: ferrochelatase activity (inferred from electronic annotation from HAMAP).
GO:0043115;	Molecular function: precorrin-2 dehydrogenase activity (inferred from electronic annotation from HAMAP).
GO:0004851;	Molecular function: uroporphyrin-III C-methyltransferase activity (inferred from electronic annotation from HAMAP).
GO:0009236;	Biological process: cobalamin biosynthetic process (inferred from electronic annotation from HAMAP).
GO:0019354;	Biological process: siroheme biosynthetic process (inferred from electronic annotation from HAMAP).
QuickGo view.

Family and domain databases

HAMAP

MF_01646; -; 1.
PBIL [Tree]

InterPro

IPR000878; 4pyrrol_Mease.
IPR014777; 4pyrrole_Mease_sub1.
IPR014776; 4pyrrole_Mease_sub2.
IPR006366; CobA_cysG_C.
IPR006367; CysG_synth_N.
IPR016040; NAD(P)-bd.
IPR003043; Uropor_MeTrfase_CS.
Graphical view of domain structure.

Gene3D

G3DSA:3.40.1010.10; 4pyrrole_Mease_sub1; 1.
G3DSA:3.30.950.10; 4pyrrole_Mease_sub2; 1.
G3DSA:3.40.50.720; NAD(P)-bd; 1.

Pfam

PF00590; TP_methylase; 1.
Pfam graphical view of domain structure.

TIGRFAMs

TIGR01469; cobA_cysG_Cterm; 1.
TIGR01470; cysG_Nterm; 1.

PROSITE

PS00839; SUMT_1; 1.
PS00840; SUMT_2; 1.

BLOCKS

Q6F8G6.

Genome annotation databases

GeneID

2878421; -.

GenomeReviews

CR543861_GR; ACIAD2934.

KEGG

aci:ACIAD2934; -.

NMPDR

fig|62977.3.peg.2664; -.

Phylogenomic databases

HOGENOM

Q6F8G6; -.

Genome annotation databases

CMR

Q6F8G6; ACIAD2934.

Other

ProtoNet

Q6F8G6.

UniRef

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

Keywords

Cobalamin biosynthesis; Complete proteome; Lyase; Methyltransferase; Multifunctional enzyme; NAD; Oxidoreductase; Porphyrin biosynthesis; S-adenosyl-L-methionine; Transferase.

Features

Feature table viewer

Feature aligner

`Key`	`From To`	`Length`	`Description`	`FTId`
`CHAIN`	`1 457`	`457`	`Siroheme synthase.`	`PRO_0000330484`
`REGION`	`218 457`	`240`	`Uroporphyrinogen-III C-methyltransferase.`

Sequence information

Length: 457 AA [This is the length of the unprocessed precursor]

Molecular weight: 50431 Da [This is the MW of the unprocessed precursor]

CRC64: F3076FEFEA6830A2 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MEIFPISLKL QQQRCLIVGG GHIAYRKAIL LVKAGAILDI VAPDIDPQLM SLIEQSAGTA 

        70         80         90        100        110        120 
YVKLFEDHDL DRVYRLVIAA TDNADVNKRV FEQAELRNLL VNSVDDIPNC RFMVPAIIDR 

       130        140        150        160        170        180 
SPLLISVASN GASPVLSRQL RTQIETLVPH GMGKLAEFSG QWRSRVKAQI TNPDERRIFW 

       190        200        210        220        230        240 
EELYASPLKE QVFNDNLDIA NQMMTQSLAE WTAPKGEVYL VGAGPGDPEL LTLKALRLMQ 

       250        260        270        280        290        300 
QADVVIYDRL VSAPILELCR RDAEKVYVGK ARSNHSVPQE GINALLVKYA QAGKRVCRLK 

       310        320        330        340        350        360 
GGDPFIFGRG GEEIQELFAA GIPFQVVPGI TAASGCSAYA GIPLTHRDYA QSVRFLTGHL 

       370        380        390        400        410        420 
KEGSPELPWS ELVYENQTLV LYMGLVGLEH ICQQLIAHGQ RPDMPVALVS KGTTPEQKVV 

       430        440        450 
VGTLSNIASK IAEYQIHAPT LTIIGEVVSL REQLQWL

Q6F8G6 in FASTA format

View entry in original UniProtKB/Swiss-Prot format
View entry in raw text format (no links)
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	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