Reviewed, UniProtKB/Swiss-Prot Q2KWB0 (CYSG_BORA1)

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
Ordered Locus Names:	BAV0848

Organism

Bordetella avium (strain 197N) [Complete proteome] [HAMAP]

Taxonomic identifier

360910 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Betaproteobacteria › Burkholderiales › Alcaligenaceae › Bordetella

Protein attributes

Sequence length	461 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Multifunctional enzyme that catalyzes 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 consists 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. HAMAP MF_01646 S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2. HAMAP MF_01646 Precorrin-2 + NAD+ = sirohydrochlorin + NADH. HAMAP MF_01646 Siroheme + 2 H+ = sirohydrochlorin + Fe2+. HAMAP MF_01646
Pathway	Cofactor biosynthesis; adenosylcobalamin biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. HAMAP MF_01646 Cofactor biosynthesis; adenosylcobalamin biosynthesis; sirohydrochlorin from precorrin-2: step 1/1. Porphyrin metabolism; siroheme biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. HAMAP MF_01646 Porphyrin metabolism; siroheme biosynthesis; siroheme from sirohydrochlorin: step 1/1. HAMAP MF_01646 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	binding Inferred from electronic annotation. Source: InterPro 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 – 461	461	Siroheme synthase HAMAP MF_01646		PRO_0000330496
Regions
	Region	218 – 461	244	Uroporphyrinogen-III C-methyltransferase HAMAP MF_01646

Sequences

	Sequence		Length	Mass (Da)
	Q2KWB0-1 [UniParc]. Last modified April 29, 2008. Version 2. Checksum: 75798D4607AAB25E	FASTA	461	49,690
	10 20 30 40 50 60 MKLFPIFSDI KGRCVLVVGG GAVATRKAQA LLEAGAAVSV GAPTLTPELA RLAQGQTITH 70 80 90 100 110 120 LQGEFDADWL KDAWLIIAAT DDRTVNTRVY EAACARRQFC NVVDDPALSS FQVPSIVDRS 130 140 150 160 170 180 PLIVAISSSG LAPVLARRLR ERLESLFDHS LGALAELAAR YRPAIRAARA DLKERRRFYD 190 200 210 220 230 240 WLLDGPVAAA LRRAQPQQAQ EALDEALARP ALSQDGRVVL VGAGPGDPGL LTLKGLRALN 250 260 270 280 290 300 EADVILHDRL VSAEVLALAR RDAERITVGK RLGENHNATQ ARIHELMVEH ARAGRRVVRL 310 320 330 340 350 360 KGGDAFIFGR GGEELEHLRA HGVDYEVVPG ITAALACAAY AGIPLTHRDY AQSVHLVTAH 370 380 390 400 410 420 CRADEEALDW DGLARGQQTL AFYMGVGQLD ILSARLVAHG RPGSTPFALI ENGSRPSQRV 430 440 450 460 VMGRLSQLAE RAREQAVASP ALLIVGEVAA LADRLAWFGK P

References

[1]

"Comparison of the genome sequence of the poultry pathogen Bordetella avium with those of B. bronchiseptica, B. pertussis, and B. parapertussis reveals extensive diversity in surface structures associated with host interaction." Sebaihia M., Preston A., Maskell D.J., Kuzmiak H., Connell T.D., King N.D., Orndorff P.E., Miyamoto D.M., Thomson N.R., Harris D., Goble A., Lord A., Murphy L., Quail M.A., Rutter S., Squares R., Squares S., Woodward J., Parkhill J., Temple L.M. J. Bacteriol. 188:6002-6015(2006) [PubMed: 16885469] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].

Cross-references

Sequence databases
EMBLGenBankDDBJ	AM167904 Genomic DNA. Translation: CAJ48459.1. Different initiation.
RefSeq	YP_785377.1.
3D structure databases
ModBase	Search...
Genome annotation databases
GeneID	6267920.
GenomeReviews	Gene locus BAV0848 in contig AM167904_GR.
KEGG	bav:BAV0848.
NMPDR	fig|521.1.peg.820.
Organism-specific databases
CMR	Search...
Phylogenomic databases
HOGENOM	Q2KWB0.
Family and domain databases
HAMAP	MF_01646. [Tree]
InterPro	IPR000878. 4pyrrol_Mease. IPR014777. 4pyrrole_Mease_sub1. IPR014776. 4pyrrole_Mease_sub2. IPR006366. CobA_cysG_C. IPR016040. NAD(P)-bd_dom. IPR019478. Sirohaem_synthase_dimer_dom. IPR006367. Sirohaem_synthase_N. 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	PF10414. CysG_dimeriser. 1 hit. PF00590. TP_methylase. 1 hit. [Graphical view]
TIGRFAMs	TIGR01469. cobA_cysG_Cterm. 1 hit. TIGR01470. cysG_Nterm. 1 hit.
PROSITE	PS00839. SUMT_1. 1 hit. PS00840. SUMT_2. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

CYSG_BORA1

Accession

Primary (citable) accession number: Q2KWB0

Entry history

Integrated into UniProtKB/Swiss-Prot:	April 29, 2008
Last sequence update:	April 29, 2008
Last modified:	June 16, 2009
This is version 26 of the entry and version 2 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)