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Protein

Heme oxygenase (staphylobilin-producing) 2

Gene

isdI

Organism
Staphylococcus aureus (strain NCTC 8325)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Allows bacterial pathogens to use the host heme as an iron source. Catalyzes the oxidative degradation of the heme macrocyclic porphyrin ring to the oxo-bilirubin chromophore staphylobilin (a mixture of the linear tetrapyrroles 5-oxo-delta-bilirubin and 15-oxo-beta-bilirubin) in the presence of a suitable electron donor such as ascorbate or NADPH--cytochrome P450 reductase, with subsequent release of free iron.UniRule annotation

Catalytic activityi

Protoheme + 4 AH2 + 4 O2 = 5-oxo-delta-bilirubin + Fe2+ + CO + 4 A + 4 H2O.UniRule annotation1 Publication
Protoheme + 4 AH2 + 4 O2 = 15-oxo-beta-bilirubin + Fe2+ + CO + 4 A + 4 H2O.UniRule annotation1 Publication

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Metal bindingi6 – 61IronUniRule annotation
Sitei66 – 661Transition state stabilizerUniRule annotation
Metal bindingi76 – 761Iron (heme axial ligand)UniRule annotation

GO - Molecular functioni

  1. heme binding Source: UniProtKB-HAMAP
  2. heme oxygenase (decyclizing) activity Source: UniProtKB-HAMAP
  3. iron ion binding Source: UniProtKB-HAMAP
  4. monooxygenase activity Source: UniProtKB-KW

GO - Biological processi

  1. heme catabolic process Source: UniProtKB-HAMAP
  2. iron assimilation Source: InterPro
Complete GO annotation...

Keywords - Molecular functioni

Monooxygenase, Oxidoreductase

Keywords - Ligandi

Heme, Iron, Metal-binding

Enzyme and pathway databases

BioCyciSAUR93061:GIWJ-124-MONOMER.

Names & Taxonomyi

Protein namesi
Recommended name:
Heme oxygenase (staphylobilin-producing) 2UniRule annotation (EC:1.14.99.48)
Alternative name(s):
Heme-degrading monooxygenase 2UniRule annotation
Iron-regulated surface determinant 2UniRule annotation
Iron-responsive surface determinant 2UniRule annotation
Gene namesi
Name:isdI
Ordered Locus Names:SAOUHSC_00130
OrganismiStaphylococcus aureus (strain NCTC 8325)
Taxonomic identifieri93061 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesStaphylococcus
ProteomesiUP000008816 Componenti: Chromosome

Subcellular locationi

Cytoplasm UniRule annotation

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 108108Heme oxygenase (staphylobilin-producing) 2PRO_0000270094Add
BLAST

Proteomic databases

PRIDEiQ2G1J2.

Expressioni

Inductioni

Transcriptionally regulated by iron and the ferric uptake repressor (fur) protein.Curated

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi93061.SAOUHSC_00130.

Structurei

3D structure databases

ProteinModelPortaliQ2G1J2.
SMRiQ2G1J2. Positions 1-108.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Domaini2 – 9392ABMUniRule annotationAdd
BLAST

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni21 – 288Heme bindingUniRule annotation

Sequence similaritiesi

Belongs to the antibiotic biosynthesis monooxygenase family. Heme-degrading monooxygenase IsdG subfamily.UniRule annotation
Contains 1 ABM domain.UniRule annotation

Phylogenomic databases

eggNOGiCOG2329.
HOGENOMiHOG000008026.
KOiK07145.
OMAiISTRWKE.
OrthoDBiEOG6GTZMS.

Family and domain databases

HAMAPiMF_01272. Heme_degrading_monooxygenase.
InterProiIPR007138. ABM-like.
IPR011008. Dimeric_a/b-barrel.
IPR023953. IsdG.
[Graphical view]
PfamiPF03992. ABM. 1 hit.
[Graphical view]
SUPFAMiSSF54909. SSF54909. 1 hit.
PROSITEiPS51725. ABM. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q2G1J2-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MFMAENRLQL QKGSAEETIE RFYNRQGIET IEGFQQMFVT KTLNTEDTDE
60 70 80 90 100
VKILTIWESE DSFNNWLNSD VFKEAHKNVR LKSDDDGQQS PILSNKVFKY

DIGYHYQK
Length:108
Mass (Da):12,791
Last modified:March 21, 2006 - v1
Checksum:i8AF2718571451004
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000253 Genomic DNA. Translation: ABD29311.1.
RefSeqiYP_498730.1. NC_007795.1.

Genome annotation databases

EnsemblBacteriaiABD29311; ABD29311; SAOUHSC_00130.
GeneIDi3919839.
KEGGisao:SAOUHSC_00130.
PATRICi19577892. VBIStaAur99865_0122.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000253 Genomic DNA. Translation: ABD29311.1.
RefSeqiYP_498730.1. NC_007795.1.

3D structure databases

ProteinModelPortaliQ2G1J2.
SMRiQ2G1J2. Positions 1-108.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi93061.SAOUHSC_00130.

Proteomic databases

PRIDEiQ2G1J2.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABD29311; ABD29311; SAOUHSC_00130.
GeneIDi3919839.
KEGGisao:SAOUHSC_00130.
PATRICi19577892. VBIStaAur99865_0122.

Phylogenomic databases

eggNOGiCOG2329.
HOGENOMiHOG000008026.
KOiK07145.
OMAiISTRWKE.
OrthoDBiEOG6GTZMS.

Enzyme and pathway databases

BioCyciSAUR93061:GIWJ-124-MONOMER.

Family and domain databases

HAMAPiMF_01272. Heme_degrading_monooxygenase.
InterProiIPR007138. ABM-like.
IPR011008. Dimeric_a/b-barrel.
IPR023953. IsdG.
[Graphical view]
PfamiPF03992. ABM. 1 hit.
[Graphical view]
SUPFAMiSSF54909. SSF54909. 1 hit.
PROSITEiPS51725. ABM. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

« Hide 'large scale' publications
  1. "The Staphylococcus aureus NCTC 8325 genome."
    Gillaspy A.F., Worrell V., Orvis J., Roe B.A., Dyer D.W., Iandolo J.J.
    (In) Fischetti V., Novick R., Ferretti J., Portnoy D., Rood J. (eds.); Gram positive pathogens, 2nd edition, pp.381-412, ASM Press, Washington D.C. (2005)
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: NCTC 8325.
  2. "IsdG and IsdI, heme-degrading enzymes in the cytoplasm of Staphylococcus aureus."
    Skaar E.P., Gaspar A.H., Schneewind O.
    J. Biol. Chem. 279:436-443(2003) [PubMed] [Europe PMC] [Abstract]
    Cited for: FUNCTION, CATALYTIC ACTIVITY.

Entry informationi

Entry nameiHDOX2_STAA8
AccessioniPrimary (citable) accession number: Q2G1J2
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 9, 2007
Last sequence update: March 21, 2006
Last modified: January 7, 2015
This is version 59 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, Reference proteome

Documents

  1. 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.