FUNCTION: Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) to glutamate 1-semialdehyde (GSA) (By similarity).
CATALYTIC ACTIVITY: L-glutamate 1-semialdehyde + NADP⁺ + tRNA(Glu) = L-glutamyl-tRNA(Glu) + NADPH.
PATHWAY: Porphyrin metabolism; protoporphyrin-IX biosynthesis; 5-aminolevulinate from L-glutamyl-tRNA(Glu): step 1/2 .
SUBUNIT: Homodimer (By similarity).
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).
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).
SIMILARITY: Belongs to the glutamyl-tRNA reductase family.

Copyright

Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.

Cross-references

Sequence databases

EMBL

CP000251; ABC81764.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_465201.1; -.

3D structure databases

ModBase

Q2IJD4.

Enzyme and pathway databases

BioCyc

ADEH290397:ADEH_1994-MON; -.

Ontologies

GO:0008883;	Molecular function: glutamyl-tRNA reductase activity (inferred from electronic annotation from HAMAP).
GO:0006779;	Biological process: porphyrin biosynthetic process (inferred from electronic annotation from HAMAP).
QuickGo view.

Family and domain databases

HAMAP

MF_00087; -; 1.
PBIL [Tree]

InterPro

IPR000343; 4pyrrol_synth_GluRdtase.
IPR015896; 4pyrrol_synth_GluRdtase_C.
IPR015895; 4pyrrol_synth_GluRdtase_N.
IPR016040; NAD(P)-bd.
IPR006151; Shikm_DHase/Glu-tRNA_Rdtase.
Graphical view of domain structure.

Gene3D

G3DSA:3.40.50.720; NAD(P)-bd; 1.

Pfam

PF00745; GlutR_dimer; 1.
PF05201; GlutR_N; 1.
PF01488; Shikimate_DH; 1.
Pfam graphical view of domain structure.

PIRSF

PIRSF000445; 4pyrrol_synth_GluRdtase; 1.

TIGR01035; hemA; 1.

PS00747; GLUTR; 1.

Genome annotation databases

GeneID

3887141; -.

GenomeReviews

CP000251_GR; Adeh_1994.

KEGG

ade:Adeh_1994; -.

Phylogenomic databases

HOGENOM

Q2IJD4; -.

Genome annotation databases

CMR

Q2IJD4; Adeh_1994.

Other

ProtoNet

Q2IJD4.

UniRef

View cluster of proteins with at least 50% / 90% / 100% identity.

Keywords

Complete proteome; NADP; Oxidoreductase; Porphyrin biosynthesis.

Features

Feature table viewer

Feature aligner

`Key`	`From To`	`Length`	`Description`	`FTId`
`CHAIN`	`1 422`	`422`	`Glutamyl-tRNA reductase 1.`	`PRO_0000335005`
`NP_BIND`	`183 188`	`6`	`NADP (By similarity).`
`REGION`	`48 51`	`4`	`Substrate binding (By similarity).`
`REGION`	`108 110`	`3`	`Substrate binding (By similarity).`
`ACT_SITE`	`49 49`		`Nucleophile (By similarity).`
`BINDING`	`103 103`		`Substrate (By similarity).`
`BINDING`	`114 114`		`Substrate (By similarity).`
`SITE`	`93 93`	`1`	`Important for activity (By similarity).`

Sequence information

Length: 422 AA [This is the length of the unprocessed precursor]

Molecular weight: 44435 Da [This is the MW of the unprocessed precursor]

CRC64: B2F7050D3958C325 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MLVAVGLNQK GATVADREVL ALPSEELLDA LTAFQALDGV DEVAIVSTCY RVEIFAAARC 

        70         80         90        100        110        120 
PAAAELSLRH ALEARAGRSL PLFELQGEEA FRHLVRVASS LESAILGEPQ ILGQVKDAFH 

       130        140        150        160        170        180 
RAAEAGAAGK ELASVLSRAL AAAKRVRTET AVGRAGVSWG NAAAALASKV LGPLAGRRVA 

       190        200        210        220        230        240 
VIGAGEMARL TAQHMRDERA SVVVLNRTLA NAEALAAEVG GEARPLDALE QELLRADVVV 

       250        260        270        280        290        300 
SAAPAAPAAL APAVMQRILH ARRKRIVMVD LAVPRAIPAE TGALPDVYLC DVDDLDRVMK 

       310        320        330        340        350        360 
AAMAERAQAA QHAERIADEE VQKFARAEAE RRAAPLIQEM RSRASAIARE EVERTLRRLG 

       370        380        390        400        410        420 
EDPELAKRLD AMAGSIVSKI LHAPSTRLRQ AVCDGGANDP LVAAAVQIFD LSAAPAARGD 


AA

Q2IJD4 in FASTA format

View entry in original UniProtKB/Swiss-Prot format
View entry in raw text format (no links)
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	BLAST submission on ExPASy/SIB or at NCBI (USA)		Sequence analysis tools: ProtParam, ProtScale, Compute pI/Mw, PeptideMass, PeptideCutter, Dotlet (Java)
	ScanProsite, MotifScan		Submit a homology modeling request to SWISS-MODEL
	NPSA Sequence analysis tools