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A2BQQ3 (HEM1_PROMS) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 60. 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:A9601_08301
OrganismProchlorococcus marinus (strain AS9601) [Complete proteome] [HAMAP]
Taxonomic identifier146891 [NCBI]
Taxonomic lineageBacteriaCyanobacteriaProchloralesProchlorococcaceaeProchlorococcus

Protein attributes

Sequence length436 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

Porphyrin-containing compound metabolism; chlorophyll biosynthesis. 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 processChlorophyll biosynthesis
Porphyrin biosynthesis
   LigandNADP
   Molecular functionOxidoreductase
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processchlorophyll biosynthetic process

Inferred from electronic annotation. Source: UniProtKB-HAMAP

protoporphyrinogen 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 – 436436Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_1000004666

Regions

Nucleotide binding198 – 2036NADP By similarity
Region49 – 524Substrate binding By similarity
Region114 – 1163Substrate binding By similarity

Sites

Active site501Nucleophile By similarity
Binding site1091Substrate By similarity
Binding site1201Substrate By similarity
Site991Important for activity By similarity

Sequences

Sequence LengthMass (Da)Tools
A2BQQ3 [UniParc].

Last modified February 20, 2007. Version 1.
Checksum: 258AA0EC235930A6

FASTA43648,927
        10         20         30         40         50         60 
MHIVVVGLSH RTAPVEVREK LSIPDQSITE SLKALKAFSD VLEVSILSTC NRMEIYALVK 

        70         80         90        100        110        120 
DKNTGISSIK EFISEYSGII FEDLNPHLFC FRQEEAVLHL MKVSAGLDSL VLGEGQILSQ 

       130        140        150        160        170        180 
VKKMMRLGQE NQSTGPILNR LLTQSVSTGK KVRSETNLGT GAVSISSAAV ELAQLKIGQE 

       190        200        210        220        230        240 
KGFDTLVSLE SENVLVVGAG RMSRLLITHL KSKGCHKLIL LNRNIDRALN LAQDFPDLEI 

       250        260        270        280        290        300 
VCRGLNELEE NISLSSIVFT STASEEPIID LAKIEKLNLS NRLKFIDIGV PRNISNDVKQ 

       310        320        330        340        350        360 
HQFVKSFDVD DLQEVVSRNQ EFRQKIAKEA ESLVEEERII FLEWWASLEA VPVINKLRSD 

       370        380        390        400        410        420 
LELIRKEELQ KALSRMGPDF SARERKVVEA LTKGIINKIL HTPVTKLRSP QSREERQVSL 

       430 
KIVEKLFSLV EEEQNN 

« Hide

References

[1]"Patterns and implications of gene gain and loss in the evolution of Prochlorococcus."
Kettler G.C., Martiny A.C., Huang K., Zucker J., Coleman M.L., Rodrigue S., Chen F., Lapidus A., Ferriera S., Johnson J., Steglich C., Church G.M., Richardson P., Chisholm S.W.
PLoS Genet. 3:2515-2528(2007) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: AS9601.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000551 Genomic DNA. Translation: ABM70114.1.
RefSeqYP_001009221.1. NC_008816.1.

3D structure databases

ProteinModelPortalA2BQQ3.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING146891.A9601_08301.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaABM70114; ABM70114; A9601_08301.
GeneID4717535.
KEGGpmb:A9601_08301.
PATRIC22983153. VBIProMar75723_0835.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0373.
HOGENOMHOG000109651.
KOK02492.
OMARTEIYCA.
OrthoDBEOG6MWNBM.
ProtClustDBPRK00045.

Enzyme and pathway databases

BioCycPMAR146891:GH90-848-MONOMER.
UniPathwayUPA00251; UER00316.
UPA00668.

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_PROMS
AccessionPrimary (citable) accession number: A2BQQ3
Entry history
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: February 20, 2007
Last modified: February 19, 2014
This is version 60 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