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Protein

Glutamyl-tRNA reductase

Gene

hemA

Organism
Haemophilus somnus (strain 129Pt) (Histophilus somni)
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

Pathway:iprotoporphyrin-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)LengthDescriptionGraphical viewFeature identifierActions
Active sitei50 – 501NucleophileUniRule annotation
Sitei104 – 1041Important for activityUniRule annotation
Binding sitei114 – 1141SubstrateUniRule annotation
Binding sitei125 – 1251SubstrateUniRule annotation

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi201 – 2066NADPUniRule annotation

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

BioCyciHSOM205914:GJ7V-842-MONOMER.
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:HS_0810
OrganismiHaemophilus somnus (strain 129Pt) (Histophilus somni)
Taxonomic identifieri205914 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPasteurellalesPasteurellaceaeHistophilus
ProteomesiUP000001970 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 433433Glutamyl-tRNA reductasePRO_0000335043Add
BLAST

Interactioni

Subunit structurei

Homodimer.UniRule annotation

Protein-protein interaction databases

STRINGi205914.HS_0810.

Structurei

3D structure databases

ProteinModelPortaliQ0I3Q6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Regioni49 – 524Substrate bindingUniRule annotation
Regioni119 – 1213Substrate bindingUniRule annotation

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

eggNOGiCOG0373.
HOGENOMiHOG000109650.
KOiK02492.
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.

Q0I3Q6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTILVLGINH KTASVALREK VAFSDEKRLL ALKQIKQTQL AESAVILSTC
60 70 80 90 100
NRTEVYLHNK NVGPQNDEVW LDSCVQWFAD IHQVDLEELK SCLYSQQNLQ
110 120 130 140 150
ASRHLMRVAS GLDSLILGEP QILGQVKQAY QMSEEYYSLH SDIGMMSTEL
160 170 180 190 200
SRLFQKTFAT AKRVRTETHI GESAVSVAYA ACSLARQIFD SLRNLNILLV
210 220 230 240 250
GAGETIELVS RHLLRHGVNG LAIANRTLSR AEKLVEKLET TQKIDIFSLD
260 270 280 290 300
RLSEGLKRAD IVITSTGSPH VLISRNLIEQ AQQMRHYKPM LIVDIAVPRD
310 320 330 340 350
VEESAGEIES VYHYTVDDLH NIIQYNINQR EQASQQAEHI IQQESADFFE
360 370 380 390 400
WLKVHQFSNL IRNYRESAEI IRQDLLEKAL QALQNGENTE QVLQELSHKL
410 420 430
TKKLIHQPTQ AMQTMVKAGN TEGLQAFSHA VKF
Length:433
Mass (Da):49,076
Last modified:May 20, 2008 - v2
Checksum:i0FCC4BCFBDDE38B0
GO

Sequence cautioni

The sequence ABI25085.1 differs from that shown. Reason: Erroneous initiation. Curated

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000436 Genomic DNA. Translation: ABI25085.1. Different initiation.
RefSeqiWP_041604533.1. NC_008309.1.

Genome annotation databases

EnsemblBacteriaiABI25085; ABI25085; HS_0810.
KEGGihso:HS_0810.
PATRICi20281627. VBIHaeSom53361_0851.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000436 Genomic DNA. Translation: ABI25085.1. Different initiation.
RefSeqiWP_041604533.1. NC_008309.1.

3D structure databases

ProteinModelPortaliQ0I3Q6.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi205914.HS_0810.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABI25085; ABI25085; HS_0810.
KEGGihso:HS_0810.
PATRICi20281627. VBIHaeSom53361_0851.

Phylogenomic databases

eggNOGiCOG0373.
HOGENOMiHOG000109650.
KOiK02492.
OrthoDBiEOG6MWNBM.

Enzyme and pathway databases

UniPathwayiUPA00251; UER00316.
BioCyciHSOM205914:GJ7V-842-MONOMER.

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

  1. "Complete genome sequence of Haemophilus somnus (Histophilus somni) strain 129Pt and comparison to Haemophilus ducreyi 35000HP and Haemophilus influenzae Rd."
    Challacombe J.F., Duncan A.J., Brettin T.S., Bruce D., Chertkov O., Detter J.C., Han C.S., Misra M., Richardson P., Tapia R., Thayer N., Xie G., Inzana T.J.
    J. Bacteriol. 189:1890-1898(2007) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: 129Pt.

Entry informationi

Entry nameiHEM1_HAES1
AccessioniPrimary (citable) accession number: Q0I3Q6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 20, 2008
Last sequence update: May 20, 2008
Last modified: July 22, 2015
This is version 77 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

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.