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Q747I2 (HEM1_GEOSL) Reviewed, UniProtKB/Swiss-Prot

Last modified May 29, 2013. Version 71. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Glutamyl-tRNA reductase
Short name=GluTR
EC=1.2.1.70
Gene names
Name:hemA
Ordered Locus Names:GSU3284
OrganismGeobacter sulfurreducens (strain ATCC 51573 / DSM 12127 / PCA) [Reference proteome] [HAMAP]
Taxonomic identifier243231 [NCBI]
Taxonomic lineageBacteria › Proteobacteria › Deltaproteobacteria › Desulfuromonadales › Geobacteraceae › Geobacter ›

Protein attributes

Sequence length434 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.

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. HAMAP-Rule MF_00087

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_processchlorophyll biosynthetic process

Inferred from electronic annotation. Source: HAMAP

protoporphyrinogen 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: HAMAP

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 434434Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_0000114028

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
Q747I2 [UniParc].

Last modified July 5, 2004. Version 1.
Checksum: 20D61182E7743693

FASTA43448,487
        10         20         30         40         50         60 
MNIVVVGLSH KTASVEIREK IAFAPTQMEK PLRMLIAIDD IAEAVIVSTC NRVELYASTR 

        70         80         90        100        110        120 
DVAGGMARLK RFLGDYHGVP VEVLEPHLYS HHGEAAIRHV FRVAASLDSM VVGEPQILGQ 

       130        140        150        160        170        180 
IKTAYGYAAE FRTSGIILNR FLHKAFSVAK RVRTETKIAS SAVSVSFAAV ELARKIFGDL 

       190        200        210        220        230        240 
SDKTVMLIGA GEMCELAAKH FLNNGARGVM VTNRTYERAE RLAEEFEGKA IHFEDLFDQL 

       250        260        270        280        290        300 
HKADIVLSST GATHYIIRPK DIDEVIRRRK MKPMFFIDIA VPRDIDPKVN DVENVYLYDM 

       310        320        330        340        350        360 
DDLQNVVASN LQQRAEEAKK AEGIIEEEIG QFYKWISSLE VTPTIVALRS KFEDVRRAEL 

       370        380        390        400        410        420 
EKTLSAWKDL PPDGAKRLEA LTAAIVNKLL HPPTATLKRT GQGGRTDLYV DALRTLFDLQ 

       430 
TELPEPEGSL ELEE

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		AE017180 Genomic DNA. Translation: AAR36674.1.
RefSeqNP_954324.1. NC_002939.5.

3D structure databases

ProteinModelPortalQ747I2.
ModBaseSearch...

Protein-protein interaction databases

STRING243231.GSU3284.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAR36674; AAR36674; GSU3284.
GeneID2688265.
KEGGgsu:GSU3284.
PATRIC22029407. VBIGeoSul17553_3300.

Phylogenomic databases

eggNOGCOG0373.
HOGENOMHOG000109651.
KOK02492.
OMAGPILNRL.
ProtClustDBPRK00045.

Enzyme and pathway databases

BioCycGSUL243231:GH27-3323-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. 4pyrrol_synth_GluRdtase_C. 1 hit.
SSF69742. GlutR. 1 hit.
TIGRFAMsTIGR01035. hemA. 1 hit.
PROSITEPS00747. GLUTR. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameHEM1_GEOSL
AccessionPrimary (citable) accession number: Q747I2
Entry history
Integrated into UniProtKB/Swiss-Prot: February 1, 2005
Last sequence update: July 5, 2004
Last modified: May 29, 2013
This is version 71 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

PATHWAY comments

Index of metabolic and biosynthesis pathways

SIMILARITY comments

Index of protein domains and families

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