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Q1D8Z9 (HEM1_MYXXD) Reviewed, UniProtKB/Swiss-Prot

Last modified May 14, 2014. Version 68. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Glutamyl-tRNA reductase

Short name=GluTR
EC=1.2.1.70
Gene names
Name:hemA
Ordered Locus Names:MXAN_2655
OrganismMyxococcus xanthus (strain DK 1622) [Complete proteome] [HAMAP]
Taxonomic identifier246197 [NCBI]
Taxonomic lineageBacteriaProteobacteriaDeltaproteobacteriaMyxococcalesCystobacterineaeMyxococcaceaeMyxococcus

Protein attributes

Sequence length441 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) to glutamate 1-semialdehyde (GSA) By similarity. HAMAP-Rule MF_00087

Catalytic activity

L-glutamate 1-semialdehyde + NADP+ + tRNA(Glu) = L-glutamyl-tRNA(Glu) + NADPH. HAMAP-Rule MF_00087

Pathway

Porphyrin-containing compound metabolism; protoporphyrin-IX biosynthesis; 5-aminolevulinate from L-glutamyl-tRNA(Glu): step 1/2. HAMAP-Rule MF_00087

Subunit structure

Homodimer By similarity. HAMAP-Rule MF_00087

Domain

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. HAMAP-Rule MF_00087

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.

Sequence similarities

Belongs to the glutamyl-tRNA reductase family.

Ontologies

Keywords
   Biological processPorphyrin biosynthesis
   LigandNADP
   Molecular functionOxidoreductase
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processprotoporphyrinogen IX biosynthetic process

Inferred from electronic annotation. Source: UniProtKB-UniPathway

   Molecular_functionNADP binding

Inferred from electronic annotation. Source: InterPro

glutamyl-tRNA reductase activity

Inferred from electronic annotation. Source: UniProtKB-HAMAP

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 441441Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_1000004653

Regions

Nucleotide binding184 – 1896NADP By similarity
Region47 – 504Substrate binding By similarity
Region109 – 1113Substrate binding By similarity

Sites

Active site481Nucleophile By similarity
Binding site1041Substrate By similarity
Binding site1151Substrate By similarity
Site941Important for activity By similarity

Sequences

Sequence LengthMass (Da)Tools
Q1D8Z9 [UniParc].

Last modified July 11, 2006. Version 1.
Checksum: DD574763161FD643

FASTA44146,681
        10         20         30         40         50         60 
MELICIGLSH RTAPLTVRER LALPESRQVD VLQRLAQAPV EALWVSTCNR VEVYLFAPDA 

        70         80         90        100        110        120 
AMARQRALME LQVLGGVEAL EHLYEHQGEA ALVHLFRVAC SLDSMVLGEA QILGQVKEAF 

       130        140        150        160        170        180 
ERGQGAGAVR GELMRACAAA FSCAKRVRTE TAIGRAATSM AAAAVQLASK VFDGLAGKTV 

       190        200        210        220        230        240 
LVVGAGEMGE LAARHLKQAG ASKLYVTNRT LSRAEALAAE VGGQARPFEE LLGLVAAADV 

       250        260        270        280        290        300 
VVCSTASQAP LFTRDNVGAL GRGRRGRPLF MVDLAVPRDI DPAVGTLDWV HAYDVDDIQK 

       310        320        330        340        350        360 
FVADNAAARA EEAQKAGVLV AQEVARFVKE RALREGTPVL ARLRQRAEAI ARSEVERTLG 

       370        380        390        400        410        420 
ALGDGLNEKQ RKSIEAMGRA IVNKLLHEPT ARLRAVGPEG EGNRLAGAAA ELFGLLEEEV 

       430        440 
GTAAAAPSVM AAPVQVATGG K 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000113 Genomic DNA. Translation: ABF92563.1.
RefSeqYP_630874.1. NC_008095.1.

3D structure databases

ProteinModelPortalQ1D8Z9.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING246197.MXAN_2655.

Proteomic databases

PRIDEQ1D8Z9.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABF92563; ABF92563; MXAN_2655.
GeneID4107254.
KEGGmxa:MXAN_2655.
PATRIC22647839. VBIMyxXan43560_2606.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0373.
HOGENOMHOG000109649.
KOK02492.
OMALAHKLTN.
OrthoDBEOG6MWNBM.

Enzyme and pathway databases

BioCycMXAN246197:GIWU-2632-MONOMER.
UniPathwayUPA00251; UER00316.

Family and domain databases

Gene3D3.40.50.720. 1 hit.
HAMAPMF_00087. Glu_tRNA_reductase.
InterProIPR000343. 4pyrrol_synth_GluRdtase.
IPR015896. 4pyrrol_synth_GluRdtase_dimer.
IPR015895. 4pyrrol_synth_GluRdtase_N.
IPR016040. NAD(P)-bd_dom.
IPR018214. Pyrrol_synth_GluRdtase_CS.
IPR006151. Shikm_DH/Glu-tRNA_Rdtase.
[Graphical view]
PfamPF00745. GlutR_dimer. 1 hit.
PF05201. GlutR_N. 1 hit.
PF01488. Shikimate_DH. 1 hit.
[Graphical view]
PIRSFPIRSF000445. 4pyrrol_synth_GluRdtase. 1 hit.
SUPFAMSSF69075. SSF69075. 1 hit.
SSF69742. SSF69742. 1 hit.
TIGRFAMsTIGR01035. hemA. 1 hit.
PROSITEPS00747. GLUTR. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameHEM1_MYXXD
AccessionPrimary (citable) accession number: Q1D8Z9
Entry history
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: July 11, 2006
Last modified: May 14, 2014
This is version 68 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

PATHWAY comments

Index of metabolic and biosynthesis pathways