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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Campylobacter hominis (strain ATCC BAA-381 / LMG 19568 / NCTC 13146 / CH001A)
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 sitei51NucleophileUniRule annotation1
Sitei100Important for activityUniRule annotation1
Binding sitei110SubstrateUniRule annotation1
Binding sitei121SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi190 – 195NADPUniRule 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:CHAB381_0896
OrganismiCampylobacter hominis (strain ATCC BAA-381 / LMG 19568 / NCTC 13146 / CH001A)
Taxonomic identifieri360107 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesCampylobacteraceaeCampylobacter
Proteomesi
  • UP000002407 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000575721 – 429Glutamyl-tRNA reductaseAdd BLAST429

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi360107.CHAB381_0896.

Structurei

3D structure databases

ProteinModelPortaliA7I1R7.
SMRiA7I1R7.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni50 – 53Substrate bindingUniRule annotation4
Regioni115 – 117Substrate 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.
HOGENOMiHOG000109651.
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.

A7I1R7-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNYMSVSFTH KNTDIIVREK LSFANDVKKR EILKLICSNK AIKECLVLST
60 70 80 90 100
CNRVEVLAYI DDFNYTSDYV IKAISKLSGV DFDELKERAD IYEDDGAIHH
110 120 130 140 150
LFSVASSLDS LVVGETQIVG QLKDAYNFAK NERKSGVMLD LAINSALKCA
160 170 180 190 200
AVIRSKTDIS KNPISVASVA VCMAREKIGD LGGTTAVVVG AGEMAELACK
210 220 230 240 250
HLITHKAKVI IINRNIDHAK KLAESLGENA SIAEFSNLGE FINKYALIFS
260 270 280 290 300
ATGANKPIIT DLLAKPQNFK RYFFDIAVPR DIDITCDDLS EVYAVDDLEE
310 320 330 340 350
IVRKNLLLRE EQAQIAYSIV GRETTKFYKD LKTLSSTPII KALRNSAKKV
360 370 380 390 400
AETELKKAIK RGYLRHSDID EARKLIHQVF KAFLHTPTVN LKNLDENAQN
410 420
DINAIAEIFG IEEDFDKFCE NSLENKNEI
Length:429
Mass (Da):47,896
Last modified:September 11, 2007 - v1
Checksum:i24112E1047B97089
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000776 Genomic DNA. Translation: ABS52226.1.
RefSeqiWP_012108749.1. NC_009714.1.

Genome annotation databases

EnsemblBacteriaiABS52226; ABS52226; CHAB381_0896.
KEGGicha:CHAB381_0896.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000776 Genomic DNA. Translation: ABS52226.1.
RefSeqiWP_012108749.1. NC_009714.1.

3D structure databases

ProteinModelPortaliA7I1R7.
SMRiA7I1R7.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi360107.CHAB381_0896.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABS52226; ABS52226; CHAB381_0896.
KEGGicha:CHAB381_0896.

Phylogenomic databases

eggNOGiENOG4105C7E. Bacteria.
COG0373. LUCA.
HOGENOMiHOG000109651.
KOiK02492.
OMAiFAFKCAA.
OrthoDBiPOG091H05DA.

Enzyme and pathway databases

UniPathwayiUPA00251; UER00316.

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.
ProtoNetiSearch...

Entry informationi

Entry nameiHEM1_CAMHC
AccessioniPrimary (citable) accession number: A7I1R7
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 5, 2008
Last sequence update: September 11, 2007
Last modified: June 7, 2017
This is version 72 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, Reference 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.