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A7ZZE6 (HEM1_ECOHS) Reviewed, UniProtKB/Swiss-Prot

Last modified May 14, 2014. Version 50. 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:
Glutamyl-tRNA reductase

Short name=GluTR
EC=1.2.1.70
Gene names
Name:hemA
Ordered Locus Names:EcHS_A1315
OrganismEscherichia coli O9:H4 (strain HS) [Complete proteome] [HAMAP]
Taxonomic identifier331112 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaEnterobacterialesEnterobacteriaceaeEscherichia

Protein attributes

Sequence length418 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) to glutamate 1-semialdehyde (GSA) By similarity. HAMAP-Rule MF_00087

Catalytic activity

L-glutamate 1-semialdehyde + NADP+ + tRNA(Glu) = L-glutamyl-tRNA(Glu) + NADPH. HAMAP-Rule MF_00087

Pathway

Porphyrin-containing compound metabolism; protoporphyrin-IX biosynthesis; 5-aminolevulinate from L-glutamyl-tRNA(Glu): step 1/2. HAMAP-Rule MF_00087

Subunit structure

Homodimer By similarity. HAMAP-Rule MF_00087

Domain

Possesses an unusual extended V-shaped dimeric structure with each monomer consisting of three distinct domains arranged along a curved 'spinal' alpha-helix. The N-terminal catalytic domain specifically recognizes the glutamate moiety of the substrate. The second domain is the NADPH-binding domain, and the third C-terminal domain is responsible for dimerization By similarity. HAMAP-Rule MF_00087

Miscellaneous

During catalysis, the active site Cys acts as a nucleophile attacking the alpha-carbonyl group of tRNA-bound glutamate with the formation of a thioester intermediate between enzyme and glutamate, and the concomitant release of tRNA(Glu). The thioester intermediate is finally reduced by direct hydride transfer from NADPH, to form the product GSA By similarity.

Sequence similarities

Belongs to the glutamyl-tRNA reductase family.

Ontologies

Keywords
   Biological processPorphyrin biosynthesis
   LigandNADP
   Molecular functionOxidoreductase
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processprotoporphyrinogen IX biosynthetic process

Inferred from electronic annotation. Source: UniProtKB-UniPathway

   Molecular_functionNADP binding

Inferred from electronic annotation. Source: InterPro

glutamyl-tRNA reductase activity

Inferred from electronic annotation. Source: UniProtKB-HAMAP

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 418418Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_1000057575

Regions

Nucleotide binding189 – 1946NADP By similarity
Region49 – 524Substrate binding By similarity
Region114 – 1163Substrate binding By similarity

Sites

Active site501Nucleophile By similarity
Binding site1091Substrate By similarity
Binding site1201Substrate By similarity
Site991Important for activity By similarity

Sequences

Sequence LengthMass (Da)Tools
A7ZZE6 [UniParc].

Last modified October 23, 2007. Version 1.
Checksum: 8DEEE81CE2610B88

FASTA41846,321
        10         20         30         40         50         60 
MTLLALGINH KTAPVSLRER VSFSPDKLDQ ALDSLLAQPM VQGGVVLSTC NRTELYLSVE 

        70         80         90        100        110        120 
EQDNLQEALI RWLCDYHNLN EEDLRKSLYW HQDNDAVSHL MRVASGLDSL VLGEPQILGQ 

       130        140        150        160        170        180 
VKKAFADSQK GHMKASELER MFQKSFSVAK RVRTETDIGA SAVSVAFAAC TLARQIFESL 

       190        200        210        220        230        240 
STVTVLLVGA GETIELVARH LREHKVQKMI IANRTRERAQ ILADEVGAEV IALSEIDERL 

       250        260        270        280        290        300 
READIIISST ASPLPIIGKG MVERALKSRR NQPMLLVDIA VPRDVEPEVG KLANAYLYSV 

       310        320        330        340        350        360 
DDLQSIISHN LAQRKAAAVE AETIVAQETS EFMAWLRAQS ASETIREYRS QAEQVRDELT 

       370        380        390        400        410 
AKALAALEQG GDAQAIMQDL AWKLTNRLIH APTKSLQQAA RDGDNERLNI LRDSLGLE 

« Hide

References

[1]"The pangenome structure of Escherichia coli: comparative genomic analysis of E. coli commensal and pathogenic isolates."
Rasko D.A., Rosovitz M.J., Myers G.S.A., Mongodin E.F., Fricke W.F., Gajer P., Crabtree J., Sebaihia M., Thomson N.R., Chaudhuri R., Henderson I.R., Sperandio V., Ravel J.
J. Bacteriol. 190:6881-6893(2008) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: HS.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000802 Genomic DNA. Translation: ABV05650.1.
RefSeqYP_001458033.1. NC_009800.1.

3D structure databases

ProteinModelPortalA7ZZE6.
SMRA7ZZE6. Positions 2-418.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING331112.EcHS_A1315.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABV05650; ABV05650; EcHS_A1315.
GeneID5593922.
KEGGecx:EcHS_A1315.
PATRIC18312616. VBIEscCol77814_1283.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0373.
HOGENOMHOG000109650.
KOK02492.
OMALAHKLTN.
OrthoDBEOG6MWNBM.

Enzyme and pathway databases

BioCycECOL331112:GHHI-1307-MONOMER.
UniPathwayUPA00251; UER00316.

Family and domain databases

Gene3D3.40.50.720. 1 hit.
HAMAPMF_00087. Glu_tRNA_reductase.
InterProIPR000343. 4pyrrol_synth_GluRdtase.
IPR015896. 4pyrrol_synth_GluRdtase_dimer.
IPR015895. 4pyrrol_synth_GluRdtase_N.
IPR016040. NAD(P)-bd_dom.
IPR018214. Pyrrol_synth_GluRdtase_CS.
IPR006151. Shikm_DH/Glu-tRNA_Rdtase.
[Graphical view]
PfamPF00745. GlutR_dimer. 1 hit.
PF05201. GlutR_N. 1 hit.
PF01488. Shikimate_DH. 1 hit.
[Graphical view]
PIRSFPIRSF000445. 4pyrrol_synth_GluRdtase. 1 hit.
SUPFAMSSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsTIGR01035. hemA. 1 hit.
PROSITEPS00747. GLUTR. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameHEM1_ECOHS
AccessionPrimary (citable) accession number: A7ZZE6
Entry history
Integrated into UniProtKB/Swiss-Prot: February 5, 2008
Last sequence update: October 23, 2007
Last modified: May 14, 2014
This is version 50 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