Skip Header

You are using a version of Internet Explorer that may not display all features of this website. Please upgrade to a modern browser.
Contribute Send feedback
Read comments (?) or add your own

A1SRP9 (CYSG_PSYIN) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 59. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Siroheme synthase

Including the following 3 domains:

  1. 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. Precorrin-2 dehydrogenase
    EC=1.3.1.76
  3. Sirohydrochlorin ferrochelatase
    EC=4.99.1.4
Gene names
Name:cysG
Ordered Locus Names:Ping_0298
OrganismPsychromonas ingrahamii (strain 37) [Complete proteome] [HAMAP]
Taxonomic identifier357804 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaAlteromonadalesPsychromonadaceaePsychromonas

Protein attributes

Sequence length472 AA.
Sequence statusComplete.
Protein existenceInferred 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. HAMAP-Rule MF_01646

Catalytic activity

S-adenosyl-L-methionine + uroporphyrinogen III = S-adenosyl-L-homocysteine + precorrin-1. HAMAP-Rule MF_01646

S-adenosyl-L-methionine + precorrin-1 = S-adenosyl-L-homocysteine + precorrin-2. HAMAP-Rule MF_01646

Precorrin-2 + NAD+ = sirohydrochlorin + NADH. HAMAP-Rule MF_01646

Siroheme + 2 H+ = sirohydrochlorin + Fe2+. HAMAP-Rule MF_01646

Pathway

Cofactor biosynthesis; adenosylcobalamin biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. HAMAP-Rule MF_01646

Cofactor biosynthesis; adenosylcobalamin biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.

Porphyrin-containing compound metabolism; siroheme biosynthesis; precorrin-2 from uroporphyrinogen III: step 1/1. HAMAP-Rule MF_01646

Porphyrin-containing compound metabolism; siroheme biosynthesis; siroheme from sirohydrochlorin: step 1/1.

Porphyrin-containing compound metabolism; siroheme biosynthesis; sirohydrochlorin from precorrin-2: step 1/1.

Sequence similarities

Belongs to the precorrin methyltransferase family.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 472472Siroheme synthase HAMAP-Rule MF_01646
PRO_0000330549

Regions

Region217 – 457241Uroporphyrinogen-III C-methyltransferase HAMAP-Rule MF_01646

Sequences

Sequence LengthMass (Da)Tools
A1SRP9 [UniParc].

Last modified February 6, 2007. Version 1.
Checksum: 1A044E05245FE4AA

FASTA47251,193
        10         20         30         40         50         60 
MDYLPIFTKL ENRPCLVVGG GSIACRKIHL LLKAGADVTV CALEFNPSLL KQAANKELKI 

        70         80         90        100        110        120 
LEQAFTEELL ENKWLVIAAT NKKQVNEHIA TAAHAKQLLV NVVGQADISS FILPSIVDRS 

       130        140        150        160        170        180 
PLVVAISSGG KAPVLARLIR ERLETLLPMH LGRLAAISAQ FRHRVKEVIK VAPLRRRYWE 

       190        200        210        220        230        240 
KLFGNGMLAN LLQKGQTEKA IALMETSLSE DITQGDVALV GAGPGDPSLL TLKALQLMQQ 

       250        260        270        280        290        300 
ADVVLYDRLV SSDILDLVRR DADLISVGKA AGNHEVEQSR TNQMLVEFAR EGKKVVRLKG 

       310        320        330        340        350        360 
GDSFIFGRGG EELEELVEAG IAFQVVPGIT AASGCSAYAG IPLTHRDFAQ SVTFVTGHRK 

       370        380        390        400        410        420 
TDGEELNWQA LAAPNQTLVV YMGLIQSQEI QTQLLSHGRA PETPVALVNK GTTSDQHVVI 

       430        440        450        460        470 
GQLSELEQLG GGLQGPTLMI IGEVVNLADK LAWYQSDNKP PLSRDPFLVN LA 

« Hide

References

[1]"Complete sequence of Psychromonas ingrahamii 37."
US DOE Joint Genome Institute
Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S., Thompson L.S., Brettin T., Bruce D., Han C., Tapia R., Schmutz J., Larimer F. expand/collapse author list , Land M., Hauser L., Kyrpides N., Ivanova N., Staley J., Richardson P.
Submitted (JAN-2007) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: 37.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000510 Genomic DNA. Translation: ABM02164.1.
RefSeqYP_941763.1. NC_008709.1.

3D structure databases

ProteinModelPortalA1SRP9.
SMRA1SRP9. Positions 1-456.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING357804.Ping_0298.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABM02164; ABM02164; Ping_0298.
GeneID4623717.
KEGGpin:Ping_0298.
PATRIC23065318. VBIPsyIng103130_0323.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0007.
HOGENOMHOG000290518.
KOK02302.
OMAQASFIMP.
OrthoDBEOG6DRPFR.

Enzyme and pathway databases

BioCycPING357804:GJBJ-317-MONOMER.
UniPathwayUPA00148; UER00211.
UPA00148; UER00222.
UPA00262; UER00211.
UPA00262; UER00222.
UPA00262; UER00376.

Family and domain databases

Gene3D1.10.8.210. 1 hit.
3.30.950.10. 1 hit.
3.40.1010.10. 1 hit.
3.40.50.720. 1 hit.
HAMAPMF_01646. Siroheme_synth.
InterProIPR000878. 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]
PfamPF10414. CysG_dimeriser. 1 hit.
PF13241. NAD_binding_7. 1 hit.
PF00590. TP_methylase. 1 hit.
[Graphical view]
PIRSFPIRSF036426. Sirohaem_synth. 1 hit.
SUPFAMSSF53790. SSF53790. 1 hit.
TIGRFAMsTIGR01469. cobA_cysG_Cterm. 1 hit.
TIGR01470. cysG_Nterm. 1 hit.
PROSITEPS00839. SUMT_1. 1 hit.
PS00840. SUMT_2. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameCYSG_PSYIN
AccessionPrimary (citable) accession number: A1SRP9
Entry history
Integrated into UniProtKB/Swiss-Prot: April 29, 2008
Last sequence update: February 6, 2007
Last modified: February 19, 2014
This is version 59 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PATHWAY comments

Index of metabolic and biosynthesis pathways