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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Xanthomonas axonopodis pv. citri (strain 306)
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 sitei50NucleophileUniRule annotation1
Sitei91Important for activityUniRule annotation1
Binding sitei101SubstrateUniRule annotation1
Binding sitei112SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi181 – 186NADPUniRule 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:XAC0945
OrganismiXanthomonas axonopodis pv. citri (strain 306)
Taxonomic identifieri190486 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaXanthomonadalesXanthomonadaceaeXanthomonas
Proteomesi
  • UP000000576 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001140891 – 426Glutamyl-tRNA reductaseAdd BLAST426

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi190486.XAC0945

Structurei

3D structure databases

ProteinModelPortaliQ8PNU4
SMRiQ8PNU4
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni49 – 52Substrate bindingUniRule annotation4
Regioni106 – 108Substrate 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

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.

Q8PNU4-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTLWVLGLNH QTAPVDLRER AAFAGDALPR ALESLRALPQ VSEAALLSTC
60 70 80 90 100
NRTELYAMAE EAHSLVNWLE THAPGLSGYL YQHQEAEAVR HLFRVATGLD
110 120 130 140 150
SMVLGEPQIL GQVKDAWAVA RAHGALGSGL DRLFQQTFSV AKRARTDTRV
160 170 180 190 200
GANPVSVAST AVRLAQDSFA RLNESTVLLI GAGETIELAA KHLSEGRVRR
210 220 230 240 250
LLIANRTLAH AQTLASQHGG FALPLTDLER HLAEADVVFS ATAAREPLVT
260 270 280 290 300
RVQVEQALRA RKRKPMLLFD LAVPRDIEAS VGELSDAYLY TVDDLERAVE
310 320 330 340 350
DNRRGRREAA DQAEAIIDLQ VARYVETLQA TAHQAPLKRL RAFGDSTRDE
360 370 380 390 400
LLAKARQQLH NGKPADEVLE QLAHALTNRL LHPPTAALRD AALNNDLELT
410 420
AAADRLFPEK PGYQHPPHSY PDREDR
Length:426
Mass (Da):46,831
Last modified:October 1, 2002 - v1
Checksum:i9C594B528CF2F4A7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE008923 Genomic DNA Translation: AAM35833.1
RefSeqiWP_011050635.1, NC_003919.1

Genome annotation databases

EnsemblBacteriaiAAM35833; AAM35833; XAC0945
KEGGixac:XAC0945

Similar proteinsi

Entry informationi

Entry nameiHEM1_XANAC
AccessioniPrimary (citable) accession number: Q8PNU4
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 2003
Last sequence update: October 1, 2002
Last modified: July 18, 2018
This is version 110 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

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