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

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Cross-references

Sequence databases

EMBL

CP000813; ABV63121.1; -; Genomic_DNA.

[EMBL / GenBank / DDBJ] [CoDingSequence]

RefSeq

YP_001487681.1; -.

3D structure databases

ModBase

A8FFV4.

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

5621727; -.

GenomeReviews

CP000813_GR; BPUM_2458.

KEGG

bpu:BPUM_2458; -.

CMR

A8FFV4; BPUM_2458.

Other

ProtoNet

A8FFV4.

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`	`1 455`	`455`	`Glutamyl-tRNA reductase.`	`PRO_1000057570`
`NP_BIND`	`189 194`	`6`	`NADP (By similarity).`
`REGION`	`49 52`	`4`	`Substrate binding (By similarity).`
`REGION`	`114 116`	`3`	`Substrate binding (By similarity).`
`ACT_SITE`	`50 50`		`Nucleophile (By similarity).`
`BINDING`	`109 109`		`Substrate (By similarity).`
`BINDING`	`120 120`		`Substrate (By similarity).`
`SITE`	`99 99`	`1`	`Important for activity (By similarity).`

Sequence information

Length: 455 AA [This is the length of the unprocessed precursor]

Molecular weight: 50817 Da [This is the MW of the unprocessed precursor]

CRC64: 8F3B7A3B560BA362 [This is a checksum on the sequence]

        10         20         30         40         50         60 
MHILVVGLDY KTAPVEIREQ LSFEPSELGT AMSKLKEEKS ILENIVISTC NRTEIYAVVD 

        70         80         90        100        110        120 
QLHTGRFYIK RFLADWFGLE KEDVSPYLKF YENDGAVEHL FRVACGLDSM VIGETQILGQ 

       130        140        150        160        170        180 
VRSSFKVAQE EKTIGTVFNY LFKQAVTVAK RSHAETDIAS NAVSVSYAAV ELAKKIFGRL 

       190        200        210        220        230        240 
SDKHVLILGA GKMGELAAQN LQGQGIGQVT VINRTYEKAK ELAGRFSGEP KSLNQLEKTL 

       250        260        270        280        290        300 
SEADILISST GAKQFVITKE MVESANKKRK GRPLFMVDIA VPRDLDPAIS EVEGAFLYDI 

       310        320        330        340        350        360 
DDLEGIVAAN LKERRAVAEQ VELLIEAEIV EFKQWLNTLG VVPVISALRE KALTIQADTM 

       370        380        390        400        410        420 
QSIERKLPNL THREMKLLNK HTKSIINQML KDPILKAKEI AAEPNAEEKL LLFKEIFDLQ 

       430        440        450 
VEDEEQKVEP VQVEQGSFQL FKPNMAQGFA TVASE

A8FFV4 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