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A0RXF8 (HEM1_CENSY) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 60. 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:CENSYa_1403
OrganismCenarchaeum symbiosum (strain A) [Reference proteome] [HAMAP]
Taxonomic identifier414004 [NCBI]
Taxonomic lineageArchaeaThaumarchaeotaCenarchaealesCenarchaeaceaeCenarchaeum

Protein attributes

Sequence length417 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
Reference 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 – 417417Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_0000335086

Regions

Nucleotide binding187 – 1926NADP By similarity
Region49 – 524Substrate binding By similarity
Region112 – 1143Substrate binding By similarity

Sites

Active site501Nucleophile By similarity
Binding site1071Substrate By similarity
Binding site1181Substrate By similarity
Site971Important for activity By similarity

Sequences

Sequence LengthMass (Da)Tools
A0RXF8 [UniParc].

Last modified January 9, 2007. Version 1.
Checksum: DACC084A22FC2F08

FASTA41744,658
        10         20         30         40         50         60 
MIPGLINARV TFHNSPVHAL ERFTFRDVGA ALEGFRAGSG LDECVIVQTC NRVELFGASA 

        70         80         90        100        110        120 
SPDMGSIRRT WASLAGIDES LFGGHLESSG GGEVLEHLLR LTSGLDSMVV GEEQILGQVK 

       130        140        150        160        170        180 
NAITSARTSG ASGRRLNTLF DRAIRSGTRI RNSTGIGSGG VSVGSMAVRL VEENMDDLHS 

       190        200        210        220        230        240 
RSILLIGTGE VSTLVAKSLG KRGYDFSVAS RTLQRSQAFC SAMGGSPVLF EDVLDGFGGY 

       250        260        270        280        290        300 
DVLFVATGAP YFLVTYDKIS EVLESRGGMM ILDLSNPRTV DEKVATLGGI KLMNLDQIAE 

       310        320        330        340        350        360 
MVSKNMRNRM SSVGKVEQMI SGEVPVMEAA MNRLDAEPIA EAAFKEADAL RRRELAKALQ 

       370        380        390        400        410 
MLGNIGGNDA KVIDDLTRAL VESIMSAPMN NLRRASEEGD ADVVDAAARL FDYRRPG 

« Hide

References

[1]"Genomic analysis of the uncultivated marine crenarchaeote Cenarchaeum symbiosum."
Hallam S.J., Konstantinidis K.T., Putnam N., Schleper C., Watanabe Y., Sugahara J., Preston C., de la Torre J., Richardson P.M., DeLong E.F.
Proc. Natl. Acad. Sci. U.S.A. 103:18296-18301(2006) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: A.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
DP000238 Genomic DNA. Translation: ABK78025.1.
RefSeqYP_876329.1. NC_014820.1.

3D structure databases

ProteinModelPortalA0RXF8.
ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABK78025; ABK78025; CENSYa_1403.
GeneID6371583.
KEGGcsy:CENSYa_1403.

Phylogenomic databases

HOGENOMHOG000109651.
KOK02492.
OMAKCVLINT.

Enzyme and pathway databases

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_CENSY
AccessionPrimary (citable) accession number: A0RXF8
Entry history
Integrated into UniProtKB/Swiss-Prot: May 20, 2008
Last sequence update: January 9, 2007
Last modified: February 19, 2014
This is version 60 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