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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Burkholderia vietnamiensis (strain G4 / LMG 22486) (Burkholderia cepacia (strain R1808))
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) to glutamate 1-semialdehyde (GSA).UniRule annotation

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.UniRule annotation

Catalytic activityi

L-glutamate 1-semialdehyde + NADP+ + tRNA(Glu) = L-glutamyl-tRNA(Glu) + NADPH.UniRule annotation

Pathwayi: protoporphyrin-IX biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes 5-aminolevulinate from L-glutamyl-tRNA(Glu).UniRule annotation
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. Glutamyl-tRNA reductase (hemA)
  2. Glutamate-1-semialdehyde 2,1-aminomutase (hemL)
This subpathway is part of the pathway protoporphyrin-IX biosynthesis, which is itself part of Porphyrin-containing compound metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes 5-aminolevulinate from L-glutamyl-tRNA(Glu), the pathway protoporphyrin-IX biosynthesis and in Porphyrin-containing compound metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei56NucleophileUniRule annotation1
Sitei104Important for activityUniRule annotation1
Binding sitei114SubstrateUniRule annotation1
Binding sitei125SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi194 – 199NADPUniRule annotation6

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductase
Biological processPorphyrin biosynthesis
LigandNADP

Enzyme and pathway databases

UniPathwayiUPA00251; UER00316.

Names & Taxonomyi

Protein namesi
Recommended name:
Glutamyl-tRNA reductaseUniRule annotation (EC:1.2.1.70UniRule annotation)
Short name:
GluTRUniRule annotation
Gene namesi
Name:hemAUniRule annotation
Ordered Locus Names:Bcep1808_0492
OrganismiBurkholderia vietnamiensis (strain G4 / LMG 22486) (Burkholderia cepacia (strain R1808))
Taxonomic identifieri269482 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaBetaproteobacteriaBurkholderialesBurkholderiaceaeBurkholderiaBurkholderia cepacia complex
Proteomesi
  • UP000002287 Componenti: Chromosome 1

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000046011 – 432Glutamyl-tRNA reductaseAdd BLAST432

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi269482.Bcep1808_0492.

Structurei

3D structure databases

ProteinModelPortaliA4JB51.
SMRiA4JB51.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni55 – 58Substrate bindingUniRule annotation4
Regioni119 – 121Substrate bindingUniRule annotation3

Domaini

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.UniRule annotation

Sequence similaritiesi

Belongs to the glutamyl-tRNA reductase family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105C7E. Bacteria.
COG0373. LUCA.
HOGENOMiHOG000109650.
KOiK02492.
OMAiFAFKCAA.
OrthoDBiPOG091H05DA.

Family and domain databases

HAMAPiMF_00087. Glu_tRNA_reductase. 1 hit.
InterProiView protein in InterPro
IPR000343. 4pyrrol_synth_GluRdtase.
IPR015896. 4pyrrol_synth_GluRdtase_dimer.
IPR015895. 4pyrrol_synth_GluRdtase_N.
IPR018214. GluRdtase_CS.
IPR016040. NAD(P)-bd_dom.
IPR006151. Shikm_DH/Glu-tRNA_Rdtase.
PfamiView protein in Pfam
PF00745. GlutR_dimer. 1 hit.
PF05201. GlutR_N. 1 hit.
PF01488. Shikimate_DH. 1 hit.
PIRSFiPIRSF000445. 4pyrrol_synth_GluRdtase. 1 hit.
SUPFAMiSSF51735. SSF51735. 1 hit.
SSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsiTIGR01035. hemA. 1 hit.
PROSITEiView protein in PROSITE
PS00747. GLUTR. 1 hit.

Sequencei

Sequence statusi: Complete.

A4JB51-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MQLLTIGINH HTAPVALRER VAFPLEQIKP ALVTFKNVFL GPQAPNTPEA
60 70 80 90 100
AILSTCNRTE LYCATHDRAA RDGAIRWLSE YHRIPVDELA PHVYALPQSE
110 120 130 140 150
AVRHAFRVAS GLDSMVLGET QILGQMKDAV RTATEAGALG TYLNQLFQRT
160 170 180 190 200
FAVAKEVRGT TEIGTQSVSM AAAAVRLAQR IFEKVADQRV LFIGAGEMIE
210 220 230 240 250
LCATHFAAQG PRELVVANRT AERGQRLAER FGGRAMPLSD LPTRMHEFDI
260 270 280 290 300
IVSCTASTLP IIGLGAVERA VKARRHRPIF MVDLAVPRDI EPEVGKLKDV
310 320 330 340 350
FLYTVDDLGA IVREGNASRQ AAVAQAEAII ETRVQNFMQW LDTRSVVPVI
360 370 380 390 400
RHMHTQADAL RRAEVEKAQK LLARGDDPAA VLEALSQALT NKLIHGPTSA
410 420 430
LNRVSGADRD SLIDLMRGFY QHAPRSNDQS GH
Length:432
Mass (Da):47,429
Last modified:May 1, 2007 - v1
Checksum:iF0BEA3AD613475AE
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000614 Genomic DNA. Translation: ABO53504.1.

Genome annotation databases

EnsemblBacteriaiABO53504; ABO53504; Bcep1808_0492.
KEGGibvi:Bcep1808_0492.

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 one 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.

Entry informationi

Entry nameiHEM1_BURVG
AccessioniPrimary (citable) accession number: A4JB51
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: May 1, 2007
Last modified: July 5, 2017
This is version 77 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

  1. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families