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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Chlorobaculum parvum (strain NCIB 8327) (Chlorobium vibrioforme subsp. thiosulfatophilum (strain DSM 263 / NCIB 8327))
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) to glutamate 1-semialdehyde (GSA).1 Publication

Catalytic activityi

L-glutamate 1-semialdehyde + NADP+ + tRNA(Glu) = L-glutamyl-tRNA(Glu) + NADPH.

Pathway:iprotoporphyrin-IX biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes 5-aminolevulinate from L-glutamyl-tRNA(Glu).
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)LengthDescriptionGraphical viewFeature identifierActions
Active sitei50 – 501NucleophileBy similarity
Sitei99 – 991Important for activityBy similarity
Binding sitei109 – 1091SubstrateBy similarity
Binding sitei120 – 1201SubstrateBy similarity

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi189 – 1946NADPBy similarity

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Oxidoreductase

Keywords - Biological processi

Chlorophyll biosynthesis, Porphyrin biosynthesis

Keywords - Ligandi

NADP

Enzyme and pathway databases

BioCyciCPAR517417:GH95-766-MONOMER.
BRENDAi1.2.1.70. 1348.
UniPathwayiUPA00251; UER00316.

Names & Taxonomyi

Protein namesi
Recommended name:
Glutamyl-tRNA reductase (EC:1.2.1.70)
Short name:
GluTR
Gene namesi
Name:hemA
Ordered Locus Names:Cpar_0738
OrganismiChlorobaculum parvum (strain NCIB 8327) (Chlorobium vibrioforme subsp. thiosulfatophilum (strain DSM 263 / NCIB 8327))
Taxonomic identifieri517417 [NCBI]
Taxonomic lineageiBacteriaChlorobiChlorobiaChlorobialesChlorobiaceaeChlorobaculum
ProteomesiUP000008811 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 426426Glutamyl-tRNA reductasePRO_0000114009Add
BLAST

Interactioni

Subunit structurei

Homodimer.1 Publication

Protein-protein interaction databases

STRINGi517417.Cpar_0738.

Structurei

3D structure databases

ProteinModelPortaliP28462.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni49 – 524Substrate bindingBy similarity
Regioni114 – 1163Substrate bindingBy similarity

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 (By similarity).By similarity

Sequence similaritiesi

Belongs to the glutamyl-tRNA reductase family.Curated

Phylogenomic databases

eggNOGiCOG0373.
HOGENOMiHOG000109651.
KOiK02492.
OMAiNHCPNIK.
OrthoDBiEOG6MWNBM.

Family and domain databases

Gene3Di3.40.50.720. 1 hit.
HAMAPiMF_00087. Glu_tRNA_reductase.
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.
SUPFAMiSSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsiTIGR01035. hemA. 1 hit.
PROSITEiPS00747. GLUTR. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P28462-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNIISVGVNH KTAPIEIRER IALSEVQNKE FVTDLVSSGL ASEAMVVSTC
60 70 80 90 100
NRTELYVVPG MPEVNCDYLK DYIISYKDAR NAVRPEHFFN RFYCGTARHL
110 120 130 140 150
FEVSSAIDSL VLGEGQILGQ VKDAYRIAAE VGTAGILLTR LCHTAFSVAK
160 170 180 190 200
KVKTRTKLME GAVSVSYAAV ELAQKIFSNL SMKKVLLIGA GETGELAAKH
210 220 230 240 250
MYAKNARNIV ITNRTQSKAE ALAEELGTNR VLPYESYKEH LHEFDIIITA
260 270 280 290 300
VSTKEYILNA AEMQQSMAKR RLKPVIILDL GLPRNVDPEV GALQNMFLKD
310 320 330 340 350
IDALKHIIDK NLERRRAELP KVKSIIDEEL IGFGQWINTL KVRPTIVDLQ
360 370 380 390 400
SKFIEIKEKE LERYRHKVSE EELKRMEHLT DRILKKILHH PIKMLKAPVD
410 420
TADNIPSKVN LVRNIFDLEE PNQSLQ
Length:426
Mass (Da):48,142
Last modified:October 14, 2008 - v3
Checksum:iD169328D709EF697
GO

Experimental Info

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Sequence conflicti144 – 1452TA → SP in AAC61856 (PubMed:1793335).Curated
Sequence conflicti144 – 1452TA → SP in AAA23112 (PubMed:1793335).Curated
Sequence conflicti191 – 22333GETGE…AEALA → VKQSWQQSTCTPRTPGTSSS PTGRNPRPRAC in AAC61856 (PubMed:1793335).CuratedAdd
BLAST
Sequence conflicti191 – 22333GETGE…AEALA → VKQSWQQSTCTPRTPGTSSS PTGRNPRPRAC in AAA23112 (PubMed:1793335).CuratedAdd
BLAST

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M96364 Genomic DNA. Translation: AAA23112.1.
AF080069 Genomic DNA. Translation: AAC61856.1.
CP001099 Genomic DNA. Translation: ACF11155.1.
PIRiA48359.
RefSeqiWP_012501988.1. NC_011027.1.

Genome annotation databases

EnsemblBacteriaiACF11155; ACF11155; Cpar_0738.
KEGGicpc:Cpar_0738.
PATRICi21364734. VBIChlPar72705_0737.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M96364 Genomic DNA. Translation: AAA23112.1.
AF080069 Genomic DNA. Translation: AAC61856.1.
CP001099 Genomic DNA. Translation: ACF11155.1.
PIRiA48359.
RefSeqiWP_012501988.1. NC_011027.1.

3D structure databases

ProteinModelPortaliP28462.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi517417.Cpar_0738.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiACF11155; ACF11155; Cpar_0738.
KEGGicpc:Cpar_0738.
PATRICi21364734. VBIChlPar72705_0737.

Phylogenomic databases

eggNOGiCOG0373.
HOGENOMiHOG000109651.
KOiK02492.
OMAiNHCPNIK.
OrthoDBiEOG6MWNBM.

Enzyme and pathway databases

UniPathwayiUPA00251; UER00316.
BioCyciCPAR517417:GH95-766-MONOMER.
BRENDAi1.2.1.70. 1348.

Family and domain databases

Gene3Di3.40.50.720. 1 hit.
HAMAPiMF_00087. Glu_tRNA_reductase.
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.
SUPFAMiSSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsiTIGR01035. hemA. 1 hit.
PROSITEiPS00747. GLUTR. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

« Hide 'large scale' publications
  1. "Structure and expression of the Chlorobium vibrioforme hemA gene."
    Majumdar D., Avissar Y.J., Wyche J.H., Beale S.I.
    Arch. Microbiol. 156:281-289(1991) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
  2. "Glutamyl-tRNA reductase of Chlorobium vibrioforme is a dissociable homodimer that contains one tightly bound heme per subunit."
    Srivastava A., Beale S.I.
    J. Bacteriol. 187:4444-4450(2005) [PubMed] [Europe PMC] [Abstract]
    Cited for: SEQUENCE REVISION TO C-TERMINUS, FUNCTION, HEME BINDING, SUBUNIT.
  3. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: NCIB 8327.

Entry informationi

Entry nameiHEM1_CHLP8
AccessioniPrimary (citable) accession number: P28462
Secondary accession number(s): B3QMK2, O87494
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 1, 1992
Last sequence update: October 14, 2008
Last modified: July 22, 2015
This is version 113 of the entry and version 3 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 (By similarity).By similarity
Was shown to bind heme, but the precise role of heme is unclear.

Keywords - Technical termi

Complete proteome

Documents

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

External Data

Dasty 3

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 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.