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Protein

Siroheme synthase

Gene

cysG

Organism
Alcanivorax borkumensis (strain ATCC 700651 / DSM 11573 / NCIMB 13689 / SK2)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Protein inferred from homologyi

Functioni

Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme.UniRule annotation

Catalytic activityi

S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1.UniRule annotation
S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2.UniRule annotation
Precorrin-2 + NAD+ = sirohydrochlorin + NADH.UniRule annotation
Siroheme + 2 H+ = sirohydrochlorin + Fe2+.UniRule annotation

Pathway: adenosylcobalamin biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes precorrin-2 from uroporphyrinogen III.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Siroheme synthase (cysG)
This subpathway is part of the pathway adenosylcobalamin biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes precorrin-2 from uroporphyrinogen III, the pathway adenosylcobalamin biosynthesis and in Cofactor biosynthesis.

Pathway: adenosylcobalamin biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes sirohydrochlorin from precorrin-2.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Siroheme synthase (cysG)
This subpathway is part of the pathway adenosylcobalamin biosynthesis, which is itself part of Cofactor biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes sirohydrochlorin from precorrin-2, the pathway adenosylcobalamin biosynthesis and in Cofactor biosynthesis.

Pathway: siroheme biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes precorrin-2 from uroporphyrinogen III.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Siroheme synthase (cysG)
This subpathway is part of the pathway siroheme biosynthesis, which is itself part of Porphyrin-containing compound metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes precorrin-2 from uroporphyrinogen III, the pathway siroheme biosynthesis and in Porphyrin-containing compound metabolism.

Pathway: siroheme biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes siroheme from sirohydrochlorin.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Siroheme synthase (cysG)
This subpathway is part of the pathway siroheme biosynthesis, which is itself part of Porphyrin-containing compound metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes siroheme from sirohydrochlorin, the pathway siroheme biosynthesis and in Porphyrin-containing compound metabolism.

Pathway: siroheme biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes sirohydrochlorin from precorrin-2.UniRule annotation
Proteins known to be involved in this subpathway in this organism are:
  1. Siroheme synthase (cysG)
This subpathway is part of the pathway siroheme biosynthesis, which is itself part of Porphyrin-containing compound metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes sirohydrochlorin from precorrin-2, the pathway siroheme biosynthesis and in Porphyrin-containing compound metabolism.

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei227 – 2271S-adenosyl-L-methionine; via carbonyl oxygenUniRule annotation
Active sitei250 – 2501Proton acceptorUniRule annotation
Active sitei272 – 2721Proton donorUniRule annotation
Binding sitei308 – 3081S-adenosyl-L-methionine; via carbonyl oxygenUniRule annotation
Binding sitei385 – 3851S-adenosyl-L-methionine; via amide nitrogenUniRule annotation
Binding sitei414 – 4141S-adenosyl-L-methionine; via amide nitrogen and carbonyl oxygenUniRule annotation

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi22 – 232NADUniRule annotation
Nucleotide bindingi43 – 442NADUniRule annotation

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Lyase, Methyltransferase, Oxidoreductase, Transferase

Keywords - Biological processi

Cobalamin biosynthesis, Porphyrin biosynthesis

Keywords - Ligandi

NAD, S-adenosyl-L-methionine

Enzyme and pathway databases

BioCyciABOR393595:GHRI-1326-MONOMER.
UniPathwayiUPA00148; UER00211.
UPA00148; UER00222.
UPA00262; UER00211.
UPA00262; UER00222.
UPA00262; UER00376.

Names & Taxonomyi

Protein namesi
Recommended name:
Siroheme synthaseUniRule annotation
Including the following 3 domains:
Uroporphyrinogen-III C-methyltransferaseUniRule annotation (EC:2.1.1.107UniRule annotation)
Short name:
Urogen III methylaseUniRule annotation
Alternative name(s):
SUMTUniRule annotation
Uroporphyrinogen III methylaseUniRule annotation
Short name:
UROMUniRule annotation
Precorrin-2 dehydrogenaseUniRule annotation (EC:1.3.1.76UniRule annotation)
Sirohydrochlorin ferrochelataseUniRule annotation (EC:4.99.1.4UniRule annotation)
Gene namesi
Name:cysGUniRule annotation
Ordered Locus Names:ABO_1295
OrganismiAlcanivorax borkumensis (strain ATCC 700651 / DSM 11573 / NCIMB 13689 / SK2)
Taxonomic identifieri393595 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaOceanospirillalesAlcanivoracaceaeAlcanivorax
ProteomesiUP000008871 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 461461Siroheme synthasePRO_0000330491Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei128 – 1281PhosphoserineUniRule annotation

Keywords - PTMi

Phosphoprotein

Interactioni

Protein-protein interaction databases

STRINGi393595.ABO_1295.

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni1 – 203203precorrin-2 dehydrogenase / sirohydrochlorin ferrochelataseUniRule annotationAdd
BLAST
Regioni218 – 461244Uroporphyrinogen-III C-methyltransferaseUniRule annotationAdd
BLAST
Regioni303 – 3053S-adenosyl-L-methionine bindingUniRule annotation
Regioni333 – 3342S-adenosyl-L-methionine bindingUniRule annotation

Sequence similaritiesi

In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase family.UniRule annotation
In the C-terminal section; belongs to the precorrin methyltransferase family.UniRule annotation

Phylogenomic databases

eggNOGiCOG0007.
HOGENOMiHOG000290518.
KOiK02302.
OMAiQASFIMP.
OrthoDBiEOG6DRPFR.

Family and domain databases

Gene3Di1.10.8.210. 1 hit.
3.30.950.10. 1 hit.
3.40.1010.10. 1 hit.
3.40.50.720. 1 hit.
HAMAPiMF_01646. Siroheme_synth.
InterProiIPR000878. 4pyrrol_Mease.
IPR014777. 4pyrrole_Mease_sub1.
IPR014776. 4pyrrole_Mease_sub2.
IPR006366. CobA/CysG_C.
IPR016040. NAD(P)-bd_dom.
IPR012409. Sirohaem_synth.
IPR019478. Sirohaem_synthase_dimer_dom.
IPR006367. Sirohaem_synthase_N.
IPR003043. Uropor_MeTrfase_CS.
[Graphical view]
PfamiPF10414. CysG_dimeriser. 1 hit.
PF13241. NAD_binding_7. 1 hit.
PF00590. TP_methylase. 1 hit.
[Graphical view]
PIRSFiPIRSF036426. Sirohaem_synth. 1 hit.
SUPFAMiSSF53790. SSF53790. 1 hit.
TIGRFAMsiTIGR01469. cobA_cysG_Cterm. 1 hit.
TIGR01470. cysG_Nterm. 1 hit.
PROSITEiPS00840. SUMT_2. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q0VQ05-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MEFLPISWRL QGKVALLAGG GEVALRKGRL LHRSGAILTV VAPQVCDELL
60 70 80 90 100
DIVVRSGGSC VVRAFESADL DGVALVICAT DDRSTNAEIA KQAQQRGLPV
110 120 130 140 150
NVVDDPSLGD FIFPAIVDRS PVLISISSSG ASPVLARKLR AQLESTLPAR
160 170 180 190 200
WGRLADLMAR FRQPLKDKLS NIGARRLFWE QTLDSPVVEK VLAGKDSEAE
210 220 230 240 250
AMLAAAIESA DATTLSRGEV YLVGAGPGDP DLLTFRALRL LQKADVVLYD
260 270 280 290 300
RLVGKGIVDL ARRDAELVYV GKARDKHALP QDNINELLVH YAKQGKKVCR
310 320 330 340 350
LKGGDPFIFG RGGEEIDLIV AEGIDFQVVP GITAASGCAS YAGIPLTHRD
360 370 380 390 400
HAQSVRFVTG HRKDGSVDLD WKHLVSETET VVFYMGLVGL REICSQLIAH
410 420 430 440 450
GRGGDTPIAL VSRGTTNLQE VITGRLDQLP DDIEGREIHA PTLIIVGSVV
460
SLHPKFGWFK P
Length:461
Mass (Da):49,741
Last modified:September 5, 2006 - v1
Checksum:iEA11471035C5EA8A
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AM286690 Genomic DNA. Translation: CAL16743.1.
RefSeqiWP_011588577.1. NC_008260.1.
YP_693015.1. NC_008260.1.

Genome annotation databases

EnsemblBacteriaiCAL16743; CAL16743; ABO_1295.
KEGGiabo:ABO_1295.
PATRICi20840347. VBIAlcBor124741_1360.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AM286690 Genomic DNA. Translation: CAL16743.1.
RefSeqiWP_011588577.1. NC_008260.1.
YP_693015.1. NC_008260.1.

3D structure databases

ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi393595.ABO_1295.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAL16743; CAL16743; ABO_1295.
KEGGiabo:ABO_1295.
PATRICi20840347. VBIAlcBor124741_1360.

Phylogenomic databases

eggNOGiCOG0007.
HOGENOMiHOG000290518.
KOiK02302.
OMAiQASFIMP.
OrthoDBiEOG6DRPFR.

Enzyme and pathway databases

UniPathwayiUPA00148; UER00211.
UPA00148; UER00222.
UPA00262; UER00211.
UPA00262; UER00222.
UPA00262; UER00376.
BioCyciABOR393595:GHRI-1326-MONOMER.

Family and domain databases

Gene3Di1.10.8.210. 1 hit.
3.30.950.10. 1 hit.
3.40.1010.10. 1 hit.
3.40.50.720. 1 hit.
HAMAPiMF_01646. Siroheme_synth.
InterProiIPR000878. 4pyrrol_Mease.
IPR014777. 4pyrrole_Mease_sub1.
IPR014776. 4pyrrole_Mease_sub2.
IPR006366. CobA/CysG_C.
IPR016040. NAD(P)-bd_dom.
IPR012409. Sirohaem_synth.
IPR019478. Sirohaem_synthase_dimer_dom.
IPR006367. Sirohaem_synthase_N.
IPR003043. Uropor_MeTrfase_CS.
[Graphical view]
PfamiPF10414. CysG_dimeriser. 1 hit.
PF13241. NAD_binding_7. 1 hit.
PF00590. TP_methylase. 1 hit.
[Graphical view]
PIRSFiPIRSF036426. Sirohaem_synth. 1 hit.
SUPFAMiSSF53790. SSF53790. 1 hit.
TIGRFAMsiTIGR01469. cobA_cysG_Cterm. 1 hit.
TIGR01470. cysG_Nterm. 1 hit.
PROSITEiPS00840. SUMT_2. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 700651 / DSM 11573 / NCIMB 13689 / SK2.

Entry informationi

Entry nameiCYSG_ALCBS
AccessioniPrimary (citable) accession number: Q0VQ05
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: September 5, 2006
Last modified: April 29, 2015
This is version 69 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Multifunctional enzyme, Reference proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.