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O08393 (HEM1_NOSS1) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 104. 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:alr1042
OrganismNostoc sp. (strain PCC 7120 / UTEX 2576) [Complete proteome] [HAMAP]
Taxonomic identifier103690 [NCBI]
Taxonomic lineageBacteriaCyanobacteriaNostocalesNostocaceaeNostoc

Protein attributes

Sequence length428 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 – 428428Glutamyl-tRNA reductase HAMAP-Rule MF_00087
PRO_0000113986

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

Experimental info

Sequence conflict331A → G in AAB58164. Ref.1
Sequence conflict481S → G in AAB58164. Ref.1
Sequence conflict1741Q → E in AAB58164. Ref.1
Sequence conflict2801I → V in AAB58164. Ref.1
Sequence conflict374 – 3807DKHQEVI → EQTSRGV in AAB58164. Ref.1

Sequences

Sequence LengthMass (Da)Tools
O08393 [UniParc].

Last modified January 23, 2002. Version 2.
Checksum: 06A470955F9D3C64

FASTA42847,909
        10         20         30         40         50         60 
MNIAVVGLSH KTAPVEIREK LSIPEPQTES AIAQLTSYPH IDEVAILSTC NRLEIYIVAG 

        70         80         90        100        110        120 
ETDHGIREVT QFLSEHSKLP VHSLRQHLFV LLHEDAVMHI MRVAAGLDSL VLGEGQILAQ 

       130        140        150        160        170        180 
VKNTHKLGQQ YNGIKTILNR LFKQALTAGK RVRTETSIGT GAVSISSAAV ELAQIKAENL 

       190        200        210        220        230        240 
AACRVTILGA GKMSRLLVQH LVSKGATQIS IVNRSRERAQ ELAKQFSEHP IRTHLLPEMM 

       250        260        270        280        290        300 
TVIAESHLVF TSTSATEPIL DRAKLEMVLA PNQPLMLFDI SVPRNVHTDV NELVNVQAFN 

       310        320        330        340        350        360 
VDDLKAVVAQ NYESRRKMAQ EAERLLEEEI EAFDIWWRSL ETVSTISSLR SKIETIREQE 

       370        380        390        400        410        420 
LEKALSRLGS EFGDKHQEVI EALTRGIVNK ILHDPMVQLR AQQDVEARRR CMQTLQMLFN 


LDVGEQFS 

« Hide

References

« Hide 'large scale' references
[1]"Cloning and characterization of hemA, a gene encoding glutamyl tRNA reductase in the cyanobacterium Anabaena sp. strain 7120."
Woelfle M.A., Haselkorn R.
Submitted (MAY-1997) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA].
[2]"Complete genomic sequence of the filamentous nitrogen-fixing cyanobacterium Anabaena sp. strain PCC 7120."
Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A., Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M., Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M. expand/collapse author list , Takazawa M., Yamada M., Yasuda M., Tabata S.
DNA Res. 8:205-213(2001) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: PCC 7120 / UTEX 2576.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
U97695 Genomic DNA. Translation: AAB58164.1.
BA000019 Genomic DNA. Translation: BAB72999.1.
PIRAG1936.
RefSeqNP_485085.1. NC_003272.1.

3D structure databases

ProteinModelPortalO08393.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING103690.alr1042.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaBAB72999; BAB72999; BAB72999.
GeneID1104636.
KEGGana:alr1042.
PATRIC22771984. VBINosSp37423_1476.

Organism-specific databases

CMRSearch...

Phylogenomic databases

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

Enzyme and pathway databases

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_NOSS1
AccessionPrimary (citable) accession number: O08393
Entry history
Integrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: January 23, 2002
Last modified: February 19, 2014
This is version 104 of the entry and version 2 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