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

CP000660; ABP51805.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_001154457.1; -.

3D structure databases

ModBase

A4WN38.

Ontologies

GO:0005737;	Cellular component: cytoplasm (inferred from electronic annotation from InterPro).
GO:0008883;	Molecular function: glutamyl-tRNA reductase activity (inferred from electronic annotation from HAMAP).
GO:0050661;	Molecular function: NADP binding (inferred from electronic annotation from InterPro).
GO:0004764;	Molecular function: shikimate 5-dehydrogenase activity (inferred from electronic annotation from InterPro).
GO:0055114;	Biological process: oxidation reduction (inferred from electronic annotation from UniProtKB-KW).
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.
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

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

TIGRFAMs

TIGR01035; hemA; 1.

PROSITE

PS00747; GLUTR; 1.

Genome annotation databases

GeneID

5055414; -.

GenomeReviews

CP000660_GR; Pars_2261.

KEGG

pas:Pars_2261; -.

CMR

A4WN38; Pars_2261.

Other

ProtoNet

A4WN38.

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`	`1 403`	`403`	`Glutamyl-tRNA reductase 2.`	`PRO_0000335097`
`NP_BIND`	`177 182`	`6`	`NADP (By similarity).`
`REGION`	`47 50`	`4`	`Substrate binding (By similarity).`
`REGION`	`103 105`	`3`	`Substrate binding (By similarity).`
`ACT_SITE`	`48 48`		`Nucleophile (By similarity).`
`BINDING`	`98 98`		`Substrate (By similarity).`
`BINDING`	`109 109`		`Substrate (By similarity).`
`SITE`	`88 88`	`1`	`Important for activity (By similarity).`

Sequence information

Length: 403 AA [This is the length of the unprocessed precursor]

Molecular weight: 43952 Da [This is the MW of the unprocessed precursor]

CRC64: 67ACEFEC46ADA556 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MDLLSPLSAV ILTYREADAN ALGRIGEEMR RCIEVIGPKT PMFVLHTCHR VEAYLYGASE 

        70         80         90        100        110        120 
EELSSLVERY KRHVESARIL RGIEAARHLF RVAAGLESML LGETDILGQL EEAYDRQVRA 

       130        140        150        160        170        180 
GFTRGLLKTV VERAVRVGKK VRTETGISRG PAGLGSLSII YVSQFVDLKS AKVAVLGAGA 

       190        200        210        220        230        240 
VGAGLAKELA ERGVAKLYIL NRTLEKATEV AKKTGAEARP LTREEVERCL LECDVVFSAV 

       250        260        270        280        290        300 
HTLEYVIDMI PPGASVKVVV DLGVPQSVAP GLPIKVVRLS DLAELAQRYS ALRKEEAKKA 

       310        320        330        340        350        360 
EAIVEEELEM LPKALAKRAV EEAVAEVMAR AVEIAEEEGR RAGCEVAQLA AKTTVKRLLL 

       370        380        390        400 
PIVEELKKMA ENGRVEHALE VSQIFTRLVG APHGEPQNLK TVK

A4WN38 in FASTA format

View entry in original UniProtKB/Swiss-Prot format
View entry in raw text format (no links)
Report form for errors/updates in this UniProtKB/Swiss-Prot entry

	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