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

AE000782; AAB89281.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

PIR

F69496; F69496.

RefSeq

NP_070799.1; -.

3D structure databases

HSSP

Q9UXR8; 1GPJ. [HSSP ENTRY / PDB]

ModBase

O28304.

Enzyme and pathway databases

BioCyc

AFUL224325:AF_1975-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

1485197; -.

GenomeReviews

AE000782_GR; AF_1975.

KEGG

afu:AF1975; -.

NMPDR

fig|224325.1.peg.1960; -.

TIGR

AF_1975; -.

Phylogenomic databases

HOGENOM

O28304; -.

Other

ProtoNet

O28304.

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`	`1 437`	`437`	`Glutamyl-tRNA reductase.`	`PRO_0000114098`
`NP_BIND`	`177 182`	`6`	`NADP (By similarity).`
`REGION`	`46 49`	`4`	`Substrate binding (By similarity).`
`REGION`	`102 104`	`3`	`Substrate binding (By similarity).`
`ACT_SITE`	`47 47`		`Nucleophile (By similarity).`
`BINDING`	`97 97`		`Substrate (By similarity).`
`BINDING`	`108 108`		`Substrate (By similarity).`
`SITE`	`87 87`	`1`	`Important for activity (By similarity).`

Sequence information

Length: 437 AA [This is the length of the unprocessed precursor]

Molecular weight: 48442 Da [This is the MW of the unprocessed precursor]

CRC64: DD0A999D55790CD6 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MEIGCITISH KNAKVEEIEK IWLTVKPRLE DVISKCSFSE YAYIFTCNRF EIYLVGENLK 

        70         80         90        100        110        120 
SCLQDIAEEL GITGKAEIFV GESCLRHLLR VASGIESMIV GEEQILGQVR QCFNLCREGG 

       130        140        150        160        170        180 
QAGEVLERVF GKAVQVGRRV RRETAISKGS VSIGSAAVEV AERVLGTLKG KKALLVGAGE 

       190        200        210        220        230        240 
MGTLVAKAIA GKEVEAVLIA NRTYEKAEEL AKRIGGVAVK FDKLVDYLKV CDVVISATSA 

       250        260        270        280        290        300 
PHAVITRGDV ERAMRERSQK LLIIDIALPR DVDESVAQLD GVELLTIDDL RRISEENLAR 

       310        320        330        340        350        360 
RREEIAKVEG IIEEELEQLK LLLKDISARD AIAAMYSLAE RFVGEEVEEL YAKLNARYGV 

       370        380        390        400        410        420 
SEDVKEILND FANSLIKKFL REPTVRLREA ARKDEFHVIE SIKYVFGDGN GRVSEGKDAK 

       430 
VEEGKPEVDV QRSKAES

O28304 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