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:	PSHAa0213

From

Pseudoalteromonas haloplanktis (strain TAC 125)

[TaxID: 326442]

[HAMAP proteome]

Taxonomy

Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales; Pseudoalteromonadaceae; Pseudoalteromonas.

Protein existence

3: Inferred from homology;

References

[1]

NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
DOI=10.1101/gr.4126905; PubMed=16169927 [NCBI, ExPASy, EBI, Israel, Japan]
Medigue C., Krin E., Pascal G., Barbe V., Bernsel A., Bertin P.N., Cheung F., Cruveiller S., D'Amico S., Duilio A., Fang G., Feller G., Ho C., Mangenot S., Marino G., Nilsson J., Parrilli E., Rocha E.P.C., Rouy Z., Sekowska A., Tutino M.L., Vallenet D., von Heijne G., Danchin A.;
"Coping with cold: the genome of the versatile marine Antarctica bacterium Pseudoalteromonas haloplanktis TAC125.";
Genome Res. 15:1325-1335(2005).

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

CR954246; CAI85316.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_338759.1; -.

3D structure databases

ModBase

Q3ILQ9.

Enzyme and pathway databases

BioCyc

PHAL326442:PSHAA0213-MON; -.

Ontologies

GO:0005488;	Molecular function: binding (inferred from electronic annotation from InterPro).
GO:0043115;	Molecular function: precorrin-2 dehydrogenase activity (inferred from electronic annotation from HAMAP).
GO:0051266;	Molecular function: sirohydrochlorin ferrochelatase activity (inferred from electronic annotation from EC).
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:0055114;	Biological process: oxidation reduction (inferred from electronic annotation from UniProtKB-KW).
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.

ProtoNet

Q3ILQ9.

Genome annotation databases

GeneID

3709414; -.

GenomeReviews

CR954246_GR; PSHAa0213.

KEGG

pha:PSHAa0213; -.

NMPDR

fig|326442.4.peg.2; -.

Phylogenomic databases

HOGENOM

Q3ILQ9; -.

Genome annotation databases

CMR

Q3ILQ9; PSHAa0213.

Other

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`	`1 473`	`473`	`Siroheme synthase.`	`PRO_0000330532`
`REGION`	`217 459`	`243`	`Uroporphyrinogen-III C-methyltransferase.`

Sequence information

Length: 473 AA [This is the length of the unprocessed precursor]

Molecular weight: 51809 Da [This is the MW of the unprocessed precursor]

CRC64: 64D87C039D7900D3 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MQYLPIFTKL DNKPVLVVGG GDVALRKCSA LLKARASITL VAPKFCQQLI ELASENKVTL 

        70         80         90        100        110        120 
IHEYFSEQHL KNMMLVIAAT DLEHVNSQVF ELANAHNIFV NVVDDQPKCT FIFPSIVDRN 

       130        140        150        160        170        180 
PITIAISSAG TAPVLARRLR EKLETLIPQH IGPLATLVGG FRSKVKQRFK HFADRRQFWE 

       190        200        210        220        230        240 
GVFDSSVVSK VQTGDTQAAE QQLEHMLNAK AEPEGEVYVV GAGPGDPELL TLKALQLMQQ 

       250        260        270        280        290        300 
ADVVVYDYLV SDEIMELVRR DADLICVGKR LGDHSVAQQD TNQMLVDLAK QGKKVCRIKG 

       310        320        330        340        350        360 
GDPFIYGRGG EEVQVLAANK VNYQIVPGIT AAAGCSAYAG IPLTHRDHAQ AIQFVTGHCK 

       370        380        390        400        410        420 
KDGQELDWQS LAKPNQTLAI YMGVIKSPHI QAELLKHGRN ANTPVAIIEN GTRKNQRVIT 

       430        440        450        460        470 
GKLGELADLI TRNSVVSPAL LIIGEVASLH QELHWFGAKA QTSSFAQPLT DVA

Q3ILQ9 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