Reviewed, UniProtKB/Swiss-Prot Q7NZV7 (CYSG_CHRVO)

Names and origin

Protein names

Recommended name:
    Siroheme synthase
Including the following 3 domains:
    1- Recommended name:
            Uroporphyrinogen-III C-methyltransferase
                Short name=Urogen III methylase
              EC=2.1.1.107
        Alternative name(s):
            SUMT
            Uroporphyrinogen III methylase
              Short name=UROM
    2- Recommended name:
            Precorrin-2 dehydrogenase
              EC=1.3.1.76
    3- Recommended name:
            Sirohydrochlorin ferrochelatase
              EC=4.99.1.4

Gene names

Name:	cysG
Synonyms:	cobA2
Ordered Locus Names:	CV_0813

Organism

Chromobacterium violaceum [Complete proteome] [HAMAP]

Taxonomic identifier

536 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Betaproteobacteria › Neisseriales › Neisseriaceae › Chromobacterium

Protein attributes

Sequence length	470 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (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. S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2. Precorrin-2 + NAD(+) = sirohydrochlorin + NADH. Siroheme + 2 H(+) = sirohydrochlorin + Fe(2+).
Pathway	Cofactor biosynthesis; adenosylcobalamin biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. Cofactor biosynthesis; adenosylcobalamin biosynthesis; sirohydrochlorin from precorrin-2: step 1/1. Porphyrin metabolism; siroheme biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. Porphyrin metabolism; siroheme biosynthesis; siroheme from sirohydrochlorin: step 1/1. Porphyrin metabolism; siroheme biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.
Sequence similarities	Belongs to the precorrin methyltransferase family.

Ontologies

Keywords
Biological process	Cobalamin biosynthesis Porphyrin biosynthesis
Ligand	NAD S-adenosyl-L-methionine
Molecular function	Lyase Methyltransferase Oxidoreductase Transferase
Technical term	Complete proteome Multifunctional enzyme
Gene Ontology (GO)
Biological process	cobalamin biosynthetic process Inferred from electronic annotation. Source: HAMAP oxidation reduction Inferred from electronic annotation. Source: UniProtKB-KW siroheme biosynthetic process Inferred from electronic annotation. Source: HAMAP
Molecular function	precorrin-2 dehydrogenase activity Inferred from electronic annotation. Source: HAMAP sirohydrochlorin ferrochelatase activity Inferred from electronic annotation. Source: EC uroporphyrin-III C-methyltransferase 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 – 470	470	Siroheme synthase		PRO_0000330500
Regions
	Region	218 – 460	243	Uroporphyrinogen-III C-methyltransferase

Sequences

	Sequence		Length	Mass (Da)
	Q7NZV7-1 [UniParc]. Last modified December 15, 2003. Version 1. Checksum: F01C33E2DE5D1B19	FASTA	470	50,153
	10 20 30 40 50 60 MEFFPIFLKL RHQRCLLVGG GEVALRKARL LLAAGASLQV VAPELAPELA DLAERGELEH 70 80 90 100 110 120 LPGRYAPALL DGMRLAVAAT DDAEVNRAVA ADAEARGILV NVVDDAEASR YISPAIIDRS 130 140 150 160 170 180 PLMVAVASGG SVPVLARSIR ARLESLIPAG YGRLARFGSS FRDAVKARFP DVDARRRFWE 190 200 210 220 230 240 TVLEGPLADA VMNGDEAAAR AEMEKRIAAG GADRAGAVYL VGAGPGNPDL LTFRALRLMQ 250 260 270 280 290 300 QADVVLYDKL VAPELLELVR RDAERVYVGK ARANHALPQD DINQLLVDLA RQGKRVLRLK 310 320 330 340 350 360 GGDPFTFGRG GEEIATLAEH GIAFEVVPGI TSASGAAAYA GIPLTHRDYA QSVTFVTGHK 370 380 390 400 410 420 QDGSIDLDWQ ALTRPQQTVV VYMGVSTAAE LCQAFVDNGR AASTPAAAVE WATTERQRTV 430 440 450 460 470 CGTLAALPGL MASHGIASPA LIIVGEVVEL ADKLSWYRRS ENSAVTIQED

References

[1]

"The complete genome sequence of Chromobacterium violaceum reveals remarkable and exploitable bacterial adaptability." Vasconcelos A.T.R., de Almeida D.F., Hungria M., Guimaraes C.T., Antonio R.V., Almeida F.C., de Almeida L.G.P., de Almeida R., Alves-Gomes J.A., Andrade E.M., Araripe J., de Araujo M.F.F., Astolfi-Filho S., Azevedo V., Baptista A.J., Bataus L.A.M., Batista J.S., Belo A. , van den Berg C., Bogo M., Bonatto S., Bordignon J., Brigido M.M., Brito C.A., Brocchi M., Burity H.A., Camargo A.A., Cardoso D.D.P., Carneiro N.P., Carraro D.M., Carvalho C.M.B., Cascardo J.C.M., Cavada B.S., Chueire L.M.O., Creczynski-Pasa T.B., Cunha-Junior N.C., Fagundes N., Falcao C.L., Fantinatti F., Farias I.P., Felipe M.S.S., Ferrari L.P., Ferro J.A., Ferro M.I.T., Franco G.R., Freitas N.S.A., Furlan L.R., Gazzinelli R.T., Gomes E.A., Goncalves P.R., Grangeiro T.B., Grattapaglia D., Grisard E.C., Hanna E.S., Jardim S.N., Laurino J., Leoi L.C.T., Lima L.F.A., Loureiro M.F., Lyra M.C.C.P., Madeira H.M.F., Manfio G.P., Maranhao A.Q., Martins W.S., di Mauro S.M.Z., de Medeiros S.R.B., Meissner R.V., Moreira M.A.M., Nascimento F.F., Nicolas M.F., Oliveira J.G., Oliveira S.C., Paixao R.F.C., Parente J.A., Pedrosa F.O., Pena S.D.J., Pereira J.O., Pereira M., Pinto L.S.R.C., Pinto L.S., Porto J.I.R., Potrich D.P., Ramalho-Neto C.E., Reis A.M.M., Rigo L.U., Rondinelli E., Santos E.B.P., Santos F.R., Schneider M.P.C., Seuanez H.N., Silva A.M.R., da Silva A.L.C., Silva D.W., Silva R., Simoes I.C., Simon D., Soares C.M.A., Soares R.B.A., Souza E.M., Souza K.R.L., Souza R.C., Steffens M.B.R., Steindel M., Teixeira S.R., Urmenyi T., Vettore A., Wassem R., Zaha A., Simpson A.J.G. Proc. Natl. Acad. Sci. U.S.A. 100:11660-11665(2003) [PubMed: 14500782] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 12472 / DSM 30191 / IFO 12614 / JCM 1249 / NCIB 9131.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AE016825 Genomic DNA. Translation: AAQ58488.1.
RefSeq	NP_900483.1.
3D structure databases
HSSP	HSSP built from PDB template 1PJT based on UniProtKB P25924.
ModBase	Search...
Genome annotation databases
GeneID	2549239.
GenomeReviews	Gene locus CV_0813 in contig AE016825_GR.
KEGG	cvi:CV_0813.
NMPDR	fig|243365.1.peg.813.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q7NZV7.
Enzyme and pathway databases
BioCyc	CVIO243365:CV_0813-MON.
Family and domain databases
HAMAP	MF_01646. [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]
Gene3D	G3DSA:3.40.1010.10. 4pyrrole_Mease_sub1. 1 hit. G3DSA:3.30.950.10. 4pyrrole_Mease_sub2. 1 hit. G3DSA:3.40.50.720. NAD(P)-bd. 1 hit.
Pfam	PF00590. TP_methylase. 1 hit. [Graphical view]
TIGRFAMs	TIGR01469. cobA_cysG_Cterm. 1 hit. TIGR01470. cysG_Nterm. 1 hit.
PROSITE	PS00839. SUMT_1. False negative. PS00840. SUMT_2. 1 hit. [Graphical view]
BLOCKS	Search...
ProtoNet	Search...

Entry information

Entry name

CYSG_CHRVO

Accession

Primary (citable) accession number: Q7NZV7

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 29, 2008
Last sequence update:	December 15, 2003
Last modified:	November 4, 2008
This is version 36 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)