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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Escherichia coli NCCP15648
Status
Unreviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) to glutamate 1-semialdehyde (GSA).UniRule annotationSAAS 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 annotationSAAS 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 annotationSAAS 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
Sitei99Important for activityUniRule annotation1
Binding sitei109SubstrateUniRule annotation1
Binding sitei120SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi189 – 194NADPUniRule annotation6

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionOxidoreductaseUniRule annotationSAAS annotation
Biological processPorphyrin biosynthesisUniRule annotationSAAS annotation
LigandNADPUniRule annotationSAAS annotation

Enzyme and pathway databases

UniPathwayiUPA00251; UER00316

Names & Taxonomyi

Protein namesi
Recommended name:
Glutamyl-tRNA reductaseUniRule annotationSAAS annotation (EC:1.2.1.70UniRule annotationSAAS annotation)
Short name:
GluTRUniRule annotation
Gene namesi
Name:hemAUniRule annotation
ORF Names:A610_1440Imported
OrganismiEscherichia coli NCCP15648Imported
Taxonomic identifieri1200752 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia

Interactioni

Subunit structurei

Homodimer.UniRule annotationSAAS annotation

Structurei

3D structure databases

SMRiA0A222QJL4
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini6 – 156GlutR_NInterPro annotationAdd BLAST151
Domaini172 – 306Shikimate_DHInterPro annotationAdd BLAST135
Domaini320 – 416GlutR_dimerInterPro annotationAdd BLAST97

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni49 – 52Substrate bindingUniRule annotation4
Regioni114 – 116Substrate bindingUniRule annotation3

Coiled coil

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Coiled coili338 – 358Sequence analysisAdd BLAST21

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 annotationSAAS annotation

Keywords - Domaini

Coiled coilSequence analysis

Phylogenomic databases

OMAiFAFKCAA

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.

A0A222QJL4-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTLLALGINH KTAPVSLRER VSFSPDKLDQ ALDSLLAQPM VQGGVVLSTC
60 70 80 90 100
NRTELYLSVE EQDNLQEALI RWLCDYHNLN EEDLRKSLYW HQDNDAVSHL
110 120 130 140 150
MRVASGLDSL VLGEPQILGQ VKKAFADSQK GHMKASELER MFQKSFSVAK
160 170 180 190 200
RVRTETDIGA SAVSVAFAAC TLARQIFESL STVTVLLVGA GETIELVARH
210 220 230 240 250
LREHKVQKMI IANRTRERAQ ILADEVGAEV IALSEIDERL READIIISST
260 270 280 290 300
ASPLPIIGKG MVERALKSRR NQPMLLVDIA VPRDVEPEVG KLANAYLYSV
310 320 330 340 350
DDLQSIISHN LAQRKAAAVE AETIVAQETS EFMAWLRAQS ASETIREYRS
360 370 380 390 400
QAEHVRDELT AKALAALEQG GDAQAIMQDL AWKLTNRLIH APTKSLQQAA
410
RDGDNERLNI LRDSLGLE
Length:418
Mass (Da):46,330
Last modified:October 25, 2017 - v1
Checksum:i9AC9D80BC5510B88
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP009050 Genomic DNA Translation: ASQ66424.1

Similar proteinsi

Entry informationi

Entry nameiA0A222QJL4_ECOLX
AccessioniPrimary (citable) accession number: A0A222QJL4
Entry historyiIntegrated into UniProtKB/TrEMBL: October 25, 2017
Last sequence update: October 25, 2017
Last modified: March 28, 2018
This is version 5 of the entry and version 1 of the sequence. See complete history.
Entry statusiUnreviewed (UniProtKB/TrEMBL)

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