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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Methanosarcina barkeri (strain Fusaro / DSM 804)
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 sitei49NucleophileUniRule annotation1
Sitei89Important for activityUniRule annotation1
Binding sitei99SubstrateUniRule annotation1
Binding sitei110SubstrateUniRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi179 – 184NADPUniRule 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:Mbar_A1462
OrganismiMethanosarcina barkeri (strain Fusaro / DSM 804)
Taxonomic identifieri269797 [NCBI]
Taxonomic lineageiArchaeaEuryarchaeotaMethanomicrobiaMethanosarcinalesMethanosarcinaceaeMethanosarcina
Proteomesi
  • UP000008156 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000046361 – 449Glutamyl-tRNA reductaseAdd BLAST449

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi269797.Mbar_A1462.

Structurei

3D structure databases

ProteinModelPortaliQ46CH3.
SMRiQ46CH3.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni48 – 51Substrate bindingUniRule annotation4
Regioni104 – 106Substrate 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

eggNOGiarCOG01036. Archaea.
COG0373. LUCA.
HOGENOMiHOG000109651.
KOiK02492.
OMAiMANLVIK.

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.

Q46CH3-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTEISSMVIS HKKAKIEEME SAWHGDLDGL LHNLYNHEYI HECVVLKTCN
60 70 80 90 100
RVEIYVVSPS SSILFSFAKE MGASTHIIDF YGHDESLEHL LRLAGGLESM
110 120 130 140 150
IVGEDQILGQ IKELYAYSKK AGTTGKILDT AFDKAIQVGK RIRNETRINK
160 170 180 190 200
GSVSIGSAAV DLAEEILDGL AGKSVLVIGA GEIGVLVAKA LAAKDIEAIY
210 220 230 240 250
IANRTFKKAE ELAYELGGYA VKLNDVQTQL KNADVVISGT GAPHYILTRE
260 270 280 290 300
IVEKAIEERD KTRKLLLIDI ANPRDIEESV AELDNVKLCN IDNLRVISEK
310 320 330 340 350
TLKMRKEEAK KAEAIIQEEI KLLNLQYKRQ RADKIISDLY KQIYDVRIRE
360 370 380 390 400
REKAVNRLCA YHTIGKIETD VLDDLTHSIA NKILAEPTKV LRQAAELGND
410 420 430 440
EFLDVAARIF CLEKDKVKAE KIKSDCGIKV EKMKPDCESA TDRVSEKGN
Length:449
Mass (Da):50,081
Last modified:September 13, 2005 - v1
Checksum:i923A7749FF2E4A86
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000099 Genomic DNA. Translation: AAZ70419.1.
RefSeqiWP_011306465.1. NC_007355.1.

Genome annotation databases

EnsemblBacteriaiAAZ70419; AAZ70419; Mbar_A1462.
GeneIDi3627743.
KEGGimba:Mbar_A1462.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000099 Genomic DNA. Translation: AAZ70419.1.
RefSeqiWP_011306465.1. NC_007355.1.

3D structure databases

ProteinModelPortaliQ46CH3.
SMRiQ46CH3.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi269797.Mbar_A1462.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAZ70419; AAZ70419; Mbar_A1462.
GeneIDi3627743.
KEGGimba:Mbar_A1462.

Phylogenomic databases

eggNOGiarCOG01036. Archaea.
COG0373. LUCA.
HOGENOMiHOG000109651.
KOiK02492.
OMAiMANLVIK.

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_METBF
AccessioniPrimary (citable) accession number: Q46CH3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: September 13, 2005
Last modified: November 2, 2016
This is version 83 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, 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.