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Protein

Siroheme synthase

Gene

cysG

Organism
Pseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)
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. Uroporphyrinogen-III C-methyltransferase (cobA), 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. Uroporphyrinogen-III C-methyltransferase (cobA), 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 sitei226 – 2261S-adenosyl-L-methionine; via carbonyl oxygenUniRule annotation
Active sitei249 – 2491Proton acceptorUniRule annotation
Active sitei271 – 2711Proton donorUniRule annotation
Binding sitei307 – 3071S-adenosyl-L-methionine; via carbonyl oxygenUniRule annotation
Binding sitei384 – 3841S-adenosyl-L-methionine; via amide nitrogenUniRule annotation
Binding sitei413 – 4131S-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

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:PA2611
OrganismiPseudomonas aeruginosa (strain ATCC 15692 / PAO1 / 1C / PRS 101 / LMG 12228)
Taxonomic identifieri208964 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPseudomonadalesPseudomonadaceaePseudomonas
ProteomesiUP000002438 Componenti: Chromosome

Organism-specific databases

PseudoCAPiPA2611.

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 465465Siroheme synthasePRO_0000330533Add
BLAST

Amino acid modifications

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

Keywords - PTMi

Phosphoprotein

Interactioni

Protein-protein interaction databases

STRINGi208964.PA2611.

Structurei

3D structure databases

ProteinModelPortaliQ9I0M7.
SMRiQ9I0M7. Positions 1-458.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni1 – 203203precorrin-2 dehydrogenase / sirohydrochlorin ferrochelataseUniRule annotationAdd
BLAST
Regioni217 – 465249Uroporphyrinogen-III C-methyltransferaseUniRule annotationAdd
BLAST
Regioni302 – 3043S-adenosyl-L-methionine bindingUniRule annotation
Regioni332 – 3332S-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.
InParanoidiQ9I0M7.
KOiK02302.
OMAiLPVICEQ.
OrthoDBiEOG6DRPFR.
PhylomeDBiQ9I0M7.

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.

Q9I0M7-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MDFLPLFHSL QGRLALVVGG GEVALRKARL LADAGARLRV VAPQIHIELR
60 70 80 90 100
HLVEQGGGEL LERDYQDGDQ PGCALIIAAT DDEPLNAEVS RAANARGIPV
110 120 130 140 150
NVVDAPALCS VIFPAIVDRS PLVVAVSSGG DAPVLARLIR AKLETWIPST
160 170 180 190 200
YGQLAGLASR FRHRVKELLP DLQQRRVFWE NLFQGEIAER VLAGRPAEAE
210 220 230 240 250
RLLEEHLAGG LAHIATGEVY LVGAGPGDPD LLTFRALRLM QQADVVLYDR
260 270 280 290 300
LVAPSILELC RRDAERLYVG KRRAEHAVPQ DRINRLLVEL ASQGKRVLRL
310 320 330 340 350
KGGDPFIFGR GGEEIDELAA HGIPFQVVPG ITAASGCAAY AGIPLTHRDH
360 370 380 390 400
AQSVRFVTGH LKDGTTDLPW QDLVAPGQTL VFYMGLVGLP VICEQLVAHG
410 420 430 440 450
RSAQTPAALI QQGTTAQQRV FTGTLENLPQ LVAEHEVHAP TLVIVGEVVQ
460
LRDKLAWFEG AREDA
Length:465
Mass (Da):50,371
Last modified:March 1, 2001 - v1
Checksum:iBCCF7296FC3F7837
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE004091 Genomic DNA. Translation: AAG05999.1.
PIRiF83320.
RefSeqiNP_251301.1. NC_002516.2.
WP_003113366.1. NC_002516.2.

Genome annotation databases

EnsemblBacteriaiAAG05999; AAG05999; PA2611.
GeneIDi882317.
KEGGipae:PA2611.
PATRICi19839713. VBIPseAer58763_2732.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE004091 Genomic DNA. Translation: AAG05999.1.
PIRiF83320.
RefSeqiNP_251301.1. NC_002516.2.
WP_003113366.1. NC_002516.2.

3D structure databases

ProteinModelPortaliQ9I0M7.
SMRiQ9I0M7. Positions 1-458.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi208964.PA2611.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAG05999; AAG05999; PA2611.
GeneIDi882317.
KEGGipae:PA2611.
PATRICi19839713. VBIPseAer58763_2732.

Organism-specific databases

PseudoCAPiPA2611.

Phylogenomic databases

eggNOGiCOG0007.
HOGENOMiHOG000290518.
InParanoidiQ9I0M7.
KOiK02302.
OMAiLPVICEQ.
OrthoDBiEOG6DRPFR.
PhylomeDBiQ9I0M7.

Enzyme and pathway databases

UniPathwayiUPA00148; UER00211.
UPA00148; UER00222.
UPA00262; UER00211.
UPA00262; UER00222.
UPA00262; UER00376.

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 15692 / PAO1 / 1C / PRS 101 / LMG 12228.

Entry informationi

Entry nameiCYSG_PSEAE
AccessioniPrimary (citable) accession number: Q9I0M7
Entry historyi
Integrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: March 1, 2001
Last modified: June 24, 2015
This is version 88 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.