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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Xanthomonas axonopodis pv. citri (strain 306)
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

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

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Porphyrin biosynthesis

Keywords - Ligandi

NADP

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.
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.
OMAiNHCPNIK.
OrthoDBiPOG091H05DA.

Family and domain databases

Gene3Di3.40.50.720. 1 hit.
HAMAPiMF_00087. Glu_tRNA_reductase. 1 hit.
InterProiIPR000343. 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.
[Graphical view]
PfamiPF00745. GlutR_dimer. 1 hit.
PF05201. GlutR_N. 1 hit.
PF01488. Shikimate_DH. 1 hit.
[Graphical view]
PIRSFiPIRSF000445. 4pyrrol_synth_GluRdtase. 1 hit.
SUPFAMiSSF51735. SSF51735. 1 hit.
SSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsiTIGR01035. hemA. 1 hit.
PROSITEiPS00747. GLUTR. 1 hit.
[Graphical view]

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.
GeneIDi14851734.
KEGGixac:XAC0945.
PATRICi24053834. VBIXanAxo33670_1015.

Cross-referencesi

Sequence databases

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

3D structure databases

ProteinModelPortaliQ8PNU4.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi190486.XAC0945.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAM35833; AAM35833; XAC0945.
GeneIDi14851734.
KEGGixac:XAC0945.
PATRICi24053834. VBIXanAxo33670_1015.

Phylogenomic databases

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

Enzyme and pathway databases

UniPathwayiUPA00251; UER00316.

Family and domain databases

Gene3Di3.40.50.720. 1 hit.
HAMAPiMF_00087. Glu_tRNA_reductase. 1 hit.
InterProiIPR000343. 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.
[Graphical view]
PfamiPF00745. GlutR_dimer. 1 hit.
PF05201. GlutR_N. 1 hit.
PF01488. Shikimate_DH. 1 hit.
[Graphical view]
PIRSFiPIRSF000445. 4pyrrol_synth_GluRdtase. 1 hit.
SUPFAMiSSF51735. SSF51735. 1 hit.
SSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsiTIGR01035. hemA. 1 hit.
PROSITEiPS00747. GLUTR. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiHEM1_XANAC
AccessioniPrimary (citable) accession number: Q8PNU4
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 2003
Last sequence update: October 1, 2002
Last modified: November 2, 2016
This is version 99 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

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

Keywords - Technical termi

Complete proteome

Documents

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

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.