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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Legionella pneumophila (strain Corby)
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
Sitei95Important for activityUniRule annotation1
Binding sitei105SubstrateUniRule annotation1
Binding sitei116SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi185 – 190NADPUniRule 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:LPC_1803
OrganismiLegionella pneumophila (strain Corby)
Taxonomic identifieri400673 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaLegionellalesLegionellaceaeLegionella

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00003350491 – 424Glutamyl-tRNA reductaseAdd BLAST424

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliA5IED6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni49 – 52Substrate bindingUniRule annotation4
Regioni110 – 112Substrate 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

HOGENOMiHOG000109650.
KOiK02492.
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.
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.

Sequencei

Sequence statusi: Complete.

A5IED6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MVFVACGLNH KTAPIHVREK VALQPAMQDS LLSSLLDLPE VNEAAILSTC
60 70 80 90 100
NRTEIYCDTN TPEVLGNWLA HEHQLSEELL SQFLYIHQGK EGIKHTLRVA
110 120 130 140 150
SGLDSMMIGE PQILGQMKQA YQHACRLGTV KTQLRPVFEY IFRASKRIRT
160 170 180 190 200
RSGIGANPVS IAYAAVQLIG QLFKNYHSLS VFLIGSGETA SLVAKYLHQH
210 220 230 240 250
GVHRFLIASR TLENAQKLAE TFGGKTLSIG DIPQYLPLAD VVISATACPL
260 270 280 290 300
PFINKSLVEH ALEQRNHAPM FLLDLAVPRD IEGNVNELEQ VHLYNVDDLQ
310 320 330 340 350
SMIEKGMNER RNAALQAEQL IESELDNYIR WHRSLRAKDV ICDYRNQMHT
360 370 380 390 400
LAQQELQRAL KKISAGQNQQ DVLNEFSMRL VNKLTHNPTI GLRQIAWDNR
410 420
EDLLDLARYL FDTTANQSLY EEIS
Length:424
Mass (Da):47,883
Last modified:May 20, 2008 - v2
Checksum:iF5463C08FE291233
GO

Sequence cautioni

The sequence ABQ55736 differs from that shown. Reason: Erroneous initiation.Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000675 Genomic DNA. Translation: ABQ55736.1. Different initiation.
RefSeqiWP_013101756.1. NC_009494.2.

Genome annotation databases

EnsemblBacteriaiABQ55736; ABQ55736; LPC_1803.
KEGGilpc:LPC_1803.
PATRICi22310125. VBILegPne45588_1877.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000675 Genomic DNA. Translation: ABQ55736.1. Different initiation.
RefSeqiWP_013101756.1. NC_009494.2.

3D structure databases

ProteinModelPortaliA5IED6.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABQ55736; ABQ55736; LPC_1803.
KEGGilpc:LPC_1803.
PATRICi22310125. VBILegPne45588_1877.

Phylogenomic databases

HOGENOMiHOG000109650.
KOiK02492.
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.
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.
ProtoNetiSearch...

Entry informationi

Entry nameiHEM1_LEGPC
AccessioniPrimary (citable) accession number: A5IED6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 20, 2008
Last sequence update: May 20, 2008
Last modified: November 2, 2016
This is version 67 of the entry and version 2 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

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.