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Q7NLA8 (HEM1_GLOVI) Reviewed, UniProtKB/Swiss-Prot

Last modified July 9, 2014. Version 87. 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:glr1218
OrganismGloeobacter violaceus (strain PCC 7421) [Reference proteome] [HAMAP]
Taxonomic identifier251221 [NCBI]
Taxonomic lineageBacteriaCyanobacteriaGloeobacteriaGloeobacteralesGloeobacter

Protein attributes

Sequence length430 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

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 430430Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_0000114029

Regions

Nucleotide binding189 – 1946NADP 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
Q7NLA8 [UniParc].

Last modified December 15, 2003. Version 1.
Checksum: 5491B16BF167B368

FASTA43048,136
        10         20         30         40         50         60 
MQIAVIGLSH RTAPVEIRER VSIAEGQVPE YVSRLRSCSQ VAECAILSTC NRLEIYTVLR 

        70         80         90        100        110        120 
DSEHGLREVT RFLAESKGVL LPTLQRHLFV LLHQDAVMHL MRVAAGLDSI VLGEGQILAQ 

       130        140        150        160        170        180 
VKMTQSLAQQ GKGVDRVLNQ LFKTAITAGK RVRSDTNIGT GAVSVSSAAV EMALRKKGPL 

       190        200        210        220        230        240 
HNQRCLVVGA GKMGELLVRH LLAKGARQII VLNRSLEKAA QMVEQFGLML PVATVDELTN 

       250        260        270        280        290        300 
YVPCSDLIFT CTGATEPLLT LEKMSSLRRD QSLMIFDIAV PRNVATEVDE LPNVQLFNVD 

       310        320        330        340        350        360 
HLKQVVEENR AYRQLMVTQC EEILLEQLDE FLDWWRGLEA VPTINQLRQK VETIREQELE 

       370        380        390        400        410        420 
KALSRLGTEF AEKHQGIIDS LTRAIVNKIL HDPMVQLRAQ RDIEARRRAL QTLQTLFNLE 

       430 
AQSNPEPPTL 

« Hide

References

[1]"Complete genome structure of Gloeobacter violaceus PCC 7421, a cyanobacterium that lacks thylakoids."
Nakamura Y., Kaneko T., Sato S., Mimuro M., Miyashita H., Tsuchiya T., Sasamoto S., Watanabe A., Kawashima K., Kishida Y., Kiyokawa C., Kohara M., Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Takeuchi C., Yamada M., Tabata S.
DNA Res. 10:137-145(2003) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: PCC 7421.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
BA000045 Genomic DNA. Translation: BAC89159.1.
RefSeqNP_924164.1. NC_005125.1.

3D structure databases

ProteinModelPortalQ7NLA8.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING251221.gvip168.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaBAC89159; BAC89159; BAC89159.
GeneID2598886.
KEGGgvi:gvip168.
PATRIC22041849. VBIGloVio86258_1243.

Phylogenomic databases

eggNOGCOG0373.
KOK02492.
OMALAHKLTN.
OrthoDBEOG6MWNBM.
PhylomeDBQ7NLA8.

Enzyme and pathway databases

BioCycGVIO251221:GH9A-1228-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_GLOVI
AccessionPrimary (citable) accession number: Q7NLA8
Entry history
Integrated into UniProtKB/Swiss-Prot: December 15, 2003
Last sequence update: December 15, 2003
Last modified: July 9, 2014
This is version 87 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