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Q4FVA9 (HEM1_PSYA2) Reviewed, UniProtKB/Swiss-Prot

Last modified May 14, 2014. Version 75. 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:Psyc_0176
OrganismPsychrobacter arcticus (strain DSM 17307 / 273-4) [Complete proteome] [HAMAP]
Taxonomic identifier259536 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaPseudomonadalesMoraxellaceaePsychrobacter

Protein attributes

Sequence length459 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 – 459459Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_1000004676

Regions

Nucleotide binding220 – 2256NADP By similarity
Region47 – 504Substrate binding By similarity
Region145 – 1473Substrate binding By similarity

Sites

Active site481Nucleophile By similarity
Binding site1401Substrate By similarity
Binding site1511Substrate By similarity
Site1301Important for activity By similarity

Sequences

Sequence LengthMass (Da)Tools
Q4FVA9 [UniParc].

Last modified August 30, 2005. Version 1.
Checksum: 9ED49868F8FC53DA

FASTA45950,933
        10         20         30         40         50         60 
MRLVVIGVNH KTAPVALRER LALVGDDVNI ALAQLQGFSD GSVIVSTCNR TEIYALVPES 

        70         80         90        100        110        120 
ILSPNTLLAS SALSVVESSI SLNSSTNISS TIISAHILKI KTWLADFKQL SLDEIDPYLY 

       130        140        150        160        170        180 
VHRDMHALTH WLRVAAGLDS MILGEPQILG QIKRAVHLAQ DQKALSNQLG WIVDQVFAAA 

       190        200        210        220        230        240 
KRVRNETQVG AQAVSLSYAA AKLVTQIFDD LPSRTLLVVA AGEMNRLVAM HIAGLGVGRI 

       250        260        270        280        290        300 
IICNRNPERA EALAAELRNP KRQIEVRTLQ ELPQVLAEAD IVSSCSGSMD ILIDKTMTLR 

       310        320        330        340        350        360 
ALKSRRYQPM LMIDLAVPRD IDSTVSRIDD VYLYSVDDLQ HVIAGNIEQR RQAAVDAELL 

       370        380        390        400        410        420 
VSQLVVEMDR RFQVRQVGKD IQQYRSRTHE QVDKLLQESI AKLQGDNANP EDIMIELTRR 

       430        440        450 
LTQNLTHAPS KLMRKAAREG DNELLDFVVS GLQDAHRHH 

« Hide

References

[1]"The genome sequence of Psychrobacter arcticus 273-4, a psychroactive Siberian permafrost bacterium, reveals mechanisms for adaptation to low-temperature growth."
Ayala-del-Rio H.L., Chain P.S., Grzymski J.J., Ponder M.A., Ivanova N., Bergholz P.W., Di Bartolo G., Hauser L., Land M., Bakermans C., Rodrigues D., Klappenbach J., Zarka D., Larimer F., Richardson P., Murray A., Thomashow M., Tiedje J.M.
Appl. Environ. Microbiol. 76:2304-2312(2010) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: DSM 17307 / 273-4.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000082 Genomic DNA. Translation: AAZ18049.1.
RefSeqYP_263483.1. NC_007204.1.

3D structure databases

ProteinModelPortalQ4FVA9.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING259536.Psyc_0176.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAZ18049; AAZ18049; Psyc_0176.
GeneID3514213.
KEGGpar:Psyc_0176.
PATRIC23054539. VBIPsyArc98534_0210.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0373.
HOGENOMHOG000109650.
KOK02492.
OMANPGEDQI.
OrthoDBEOG6MWNBM.

Enzyme and pathway databases

BioCycPARC259536:GI3A-182-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.
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. 2 hits.
TIGRFAMsTIGR01035. hemA. 1 hit.
ProtoNetSearch...

Entry information

Entry nameHEM1_PSYA2
AccessionPrimary (citable) accession number: Q4FVA9
Entry history
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: August 30, 2005
Last modified: May 14, 2014
This is version 75 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