Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Helicobacter pylori (strain HPAG1)
Status
Reviewed-Annotation score: -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 sitei59NucleophileUniRule annotation1
Sitei111Important for activityUniRule annotation1
Binding sitei121SubstrateUniRule annotation1
Binding sitei132SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi203 – 208NADPUniRule annotation6

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductase
Biological processPorphyrin biosynthesis
LigandNADP

Enzyme and pathway databases

BioCyciHPYL357544:G1G5Q-258-MONOMER
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:HPAG1_0242
OrganismiHelicobacter pylori (strain HPAG1)
Taxonomic identifieri357544 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesHelicobacteraceaeHelicobacter
Proteomesi
  • UP000008835 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000046271 – 449Glutamyl-tRNA reductaseAdd BLAST449

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliQ1CUR3
SMRiQ1CUR3
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni58 – 61Substrate bindingUniRule annotation4
Regioni126 – 128Substrate 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

HOGENOMiHOG000109651
KOiK02492
OMAiFAFKCAA
OrthoDBiPOG091H05DA

Family and domain databases

Gene3Di3.30.460.30, 1 hit
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
IPR036453 GluRdtase_dimer_dom_sf
IPR036343 GluRdtase_N_sf
IPR036291 NAD(P)-bd_dom_sf
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.

Q1CUR3-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MELETHLSKY FTLAFTHKSM SLEMREKLAI NSSATLKEFL QTIKNHCPNI
60 70 80 90 100
KECMVLSTCN RFEIYASLRH GAHANEQKSA LLKILAQNKK MSVSDLEKCV
110 120 130 140 150
LMNTDESAVH HVFSVCSSLD SLVVGETQIT GQMKNAYKFA FEEKFCSKDL
160 170 180 190 200
TRLLHFAFKC AAKVRNLTGI SKQGVSISSV AVKEALNIFE KERIKDKKAL
210 220 230 240 250
VIGLGEMAQL VIKHLLNKQF EALILGRNAA KFEDFIKELE EPKKVSFQNI
260 270 280 290 300
ENLNAYINEY ELLFCATSSP HFIVQNSMLK ETIFRRFWFD LAVPRNIEKP
310 320 330 340 350
VLDNIFLYSV DDLEPMVKEN VGNRQESRTK AYEIVGLATM EFYQWIQSLE
360 370 380 390 400
VEPLIKDLRE LARISAQKEL QKALKKRYVP KEYESNIEKI LHNAFNTFLH
410 420 430 440
HPTIALKKNA QKEESDVLVG AIKNLFNLDK SNANHAQNLN LYKCEYYEE
Length:449
Mass (Da):51,652
Last modified:July 11, 2006 - v1
Checksum:i0EF2F4F5815F4C74
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000241 Genomic DNA Translation: ABF84309.1
RefSeqiWP_000418374.1, NC_008086.1

Genome annotation databases

EnsemblBacteriaiABF84309; ABF84309; HPAG1_0242
KEGGihpa:HPAG1_0242

Similar proteinsi

Entry informationi

Entry nameiHEM1_HELPH
AccessioniPrimary (citable) accession number: Q1CUR3
Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: July 11, 2006
Last modified: March 28, 2018
This is version 88 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
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health