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:	Rmag_0270

From

Ruthia magnifica subsp. Calyptogena magnifica

[TaxID: 413404]

[HAMAP proteome]

Taxonomy

Bacteria; Proteobacteria; Gammaproteobacteria; sulfur-oxidizing symbionts.

Protein existence

3: Inferred from homology;

References

[1]

NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
DOI=10.1126/science.1138438; PubMed=17303757 [NCBI, ExPASy, EBI, Israel, Japan]
Newton I.L.G., Woyke T., Auchtung T.A., Dilly G.F., Dutton R.J., Fisher M.C., Fontanez K.M., Lau E., Stewart F.J., Richardson P.M., Barry K.W., Saunders E., Detter J.C., Wu D., Eisen J.A., Cavanaugh C.M.;
"The Calyptogena magnifica chemoautotrophic symbiont genome.";
Science 315:998-1000(2007).

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

CP000488; ABL02052.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_903523.1; -.

3D structure databases

ModBase

A1AVU5.

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; FALSE_NEG.
PS00840; SUMT_2; 1.

BLOCKS

A1AVU5.

Genome annotation databases

GeneID

4555165; -.

GenomeReviews

CP000488_GR; Rmag_0270.

KEGG

rma:Rmag_0270; -.

CMR

A1AVU5; Rmag_0270.

Other

ProtoNet

A1AVU5.

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`	`1 472`	`472`	`Siroheme synthase.`	`PRO_0000330550`
`REGION`	`218 460`	`243`	`Uroporphyrinogen-III C-methyltransferase.`

Sequence information

Length: 472 AA [This is the length of the unprocessed precursor]

Molecular weight: 52011 Da [This is the MW of the unprocessed precursor]

CRC64: 652623FA74F2E4AA [This is a checksum on the sequence]

        10         20         30         40         50         60 
MNYLPIFIDI KQKPCLVVGG GDIAYRKINF LLKAHGQVTC IAKSSCKNVV KLASDNKIIY 

        70         80         90        100        110        120 
FEKSFEASDI KEQVLIVSAT DNTSLNKQVS ELSNQNNIPV NVVDSPDLCT FIMPSIVDRS 

       130        140        150        160        170        180 
PIVIAISSAG KAPVLARLIR AKLESTLPHA YGKLAELAGN FRDKVKEKFS NIEDRRYFWE 

       190        200        210        220        230        240 
KTFSGIIAEK VFSGKIQEAK ADLQVQLDGS TKTQVGEVYL VGGGPGDPDL LTFKALRLMQ 

       250        260        270        280        290        300 
QADVVLYDRL VSNGVMGLVR RDAQLIYVGK ERDNHVVPQG DINQLLVNLA KQGRRVCRLK 

       310        320        330        340        350        360 
GGDPFIFGRG GEEIETLAEN GISFQVVPGI TAASGCSTYS GIPLTHRDYS QSCRFVTGHL 

       370        380        390        400        410        420 
KDGSMNLPWH ELSVEQQTIV FYMALNGARH LSEQLITHGM SPDMPVALVE KGTTPEQKVY 

       430        440        450        460        470 
TTTLKKLPDL VKNEIIHAPT LIIIGEVVTL REKLNWFDAK LASSKKSYLF GG

A1AVU5 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