ID HEM1_GEOKA Reviewed; 454 AA. AC Q5KWK4; DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot. DT 01-FEB-2005, sequence version 1. DT 27-MAR-2024, entry version 113. DE RecName: Full=Glutamyl-tRNA reductase {ECO:0000255|HAMAP-Rule:MF_00087}; DE Short=GluTR {ECO:0000255|HAMAP-Rule:MF_00087}; DE EC=1.2.1.70 {ECO:0000255|HAMAP-Rule:MF_00087}; GN Name=hemA {ECO:0000255|HAMAP-Rule:MF_00087}; OrderedLocusNames=GK2647; OS Geobacillus kaustophilus (strain HTA426). OC Bacteria; Bacillota; Bacilli; Bacillales; Bacillaceae; Geobacillus; OC Geobacillus thermoleovorans group. OX NCBI_TaxID=235909; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=HTA426; RX PubMed=15576355; DOI=10.1093/nar/gkh970; RA Takami H., Takaki Y., Chee G.-J., Nishi S., Shimamura S., Suzuki H., RA Matsui S., Uchiyama I.; RT "Thermoadaptation trait revealed by the genome sequence of thermophilic RT Geobacillus kaustophilus."; RL Nucleic Acids Res. 32:6292-6303(2004). CC -!- FUNCTION: Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu) CC to glutamate 1-semialdehyde (GSA). {ECO:0000255|HAMAP-Rule:MF_00087}. CC -!- CATALYTIC ACTIVITY: CC Reaction=(S)-4-amino-5-oxopentanoate + NADP(+) + tRNA(Glu) = H(+) + L- CC glutamyl-tRNA(Glu) + NADPH; Xref=Rhea:RHEA:12344, Rhea:RHEA- CC COMP:9663, Rhea:RHEA-COMP:9680, ChEBI:CHEBI:15378, ChEBI:CHEBI:57501, CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:78442, CC ChEBI:CHEBI:78520; EC=1.2.1.70; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00087}; CC -!- PATHWAY: Porphyrin-containing compound metabolism; protoporphyrin-IX CC biosynthesis; 5-aminolevulinate from L-glutamyl-tRNA(Glu): step 1/2. CC {ECO:0000255|HAMAP-Rule:MF_00087}. CC -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00087}. CC -!- DOMAIN: Possesses an unusual extended V-shaped dimeric structure with CC each monomer consisting of three distinct domains arranged along a CC curved 'spinal' alpha-helix. The N-terminal catalytic domain CC specifically recognizes the glutamate moiety of the substrate. The CC second domain is the NADPH-binding domain, and the third C-terminal CC domain is responsible for dimerization. {ECO:0000255|HAMAP- CC Rule:MF_00087}. CC -!- MISCELLANEOUS: During catalysis, the active site Cys acts as a CC nucleophile attacking the alpha-carbonyl group of tRNA-bound glutamate CC with the formation of a thioester intermediate between enzyme and CC glutamate, and the concomitant release of tRNA(Glu). The thioester CC intermediate is finally reduced by direct hydride transfer from NADPH, CC to form the product GSA. {ECO:0000255|HAMAP-Rule:MF_00087}. CC -!- SIMILARITY: Belongs to the glutamyl-tRNA reductase family. CC {ECO:0000255|HAMAP-Rule:MF_00087}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; BA000043; BAD76932.1; -; Genomic_DNA. DR RefSeq; WP_011232123.1; NC_006510.1. DR AlphaFoldDB; Q5KWK4; -. DR SMR; Q5KWK4; -. DR STRING; 235909.GK2647; -. DR KEGG; gka:GK2647; -. DR eggNOG; COG0373; Bacteria. DR HOGENOM; CLU_035113_2_2_9; -. DR UniPathway; UPA00251; UER00316. DR Proteomes; UP000001172; Chromosome. DR GO; GO:0008883; F:glutamyl-tRNA reductase activity; IEA:UniProtKB-UniRule. DR GO; GO:0050661; F:NADP binding; IEA:InterPro. DR GO; GO:0006782; P:protoporphyrinogen IX biosynthetic process; IEA:UniProtKB-UniPathway. DR CDD; cd05213; NAD_bind_Glutamyl_tRNA_reduct; 1. DR Gene3D; 3.30.460.30; Glutamyl-tRNA reductase, N-terminal domain; 1. DR Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1. DR HAMAP; MF_00087; Glu_tRNA_reductase; 1. DR InterPro; IPR000343; 4pyrrol_synth_GluRdtase. DR InterPro; IPR015896; 4pyrrol_synth_GluRdtase_dimer. DR InterPro; IPR015895; 4pyrrol_synth_GluRdtase_N. DR InterPro; IPR018214; GluRdtase_CS. DR InterPro; IPR036453; GluRdtase_dimer_dom_sf. DR InterPro; IPR036343; GluRdtase_N_sf. DR InterPro; IPR036291; NAD(P)-bd_dom_sf. DR InterPro; IPR006151; Shikm_DH/Glu-tRNA_Rdtase. DR NCBIfam; TIGR01035; hemA; 1. DR PANTHER; PTHR43013; GLUTAMYL-TRNA REDUCTASE; 1. DR PANTHER; PTHR43013:SF1; GLUTAMYL-TRNA REDUCTASE; 1. DR Pfam; PF00745; GlutR_dimer; 1. DR Pfam; PF05201; GlutR_N; 1. DR Pfam; PF01488; Shikimate_DH; 1. DR PIRSF; PIRSF000445; 4pyrrol_synth_GluRdtase; 1. DR SUPFAM; SSF69742; Glutamyl tRNA-reductase catalytic, N-terminal domain; 1. DR SUPFAM; SSF69075; Glutamyl tRNA-reductase dimerization domain; 1. DR SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1. DR PROSITE; PS00747; GLUTR; 1. PE 3: Inferred from homology; KW NADP; Oxidoreductase; Porphyrin biosynthesis; Reference proteome. FT CHAIN 1..454 FT /note="Glutamyl-tRNA reductase" FT /id="PRO_0000335040" FT ACT_SITE 50 FT /note="Nucleophile" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" FT BINDING 49..52 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" FT BINDING 109 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" FT BINDING 114..116 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" FT BINDING 120 FT /ligand="substrate" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" FT BINDING 189..194 FT /ligand="NADP(+)" FT /ligand_id="ChEBI:CHEBI:58349" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" FT SITE 99 FT /note="Important for activity" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087" SQ SEQUENCE 454 AA; 49697 MW; 840D8C677CD42A89 CRC64; MQIVVVGVDY KTAPVEIREK LAFAEAELGA AMKQLAKQKS VLENVIVSTC NRTEVYAVVD QLHTGRYYMK AFLAEWFGVK VEAIAPYLRV LEGEAAIKHL FRVAAGLDSM VLGETQILGQ VKDSYLLAQE VGTSGTIFNH LFKQAVTFAK RAHSETGIGA HAVSVSYAAV ELAKKIFGRL AGKHVLIIGA GKMGTLAAQN LYGSGVGKVT VVNRTLEKAK QLAKQFAGEA KPLGELSCAL LEADIVISST GAKGYILTKE MVAPLEKMRK GRPLFMVDIA VPRDLDPALA DLETVFLYDI DDLQDVVAAN LAERQKAAAR IETMIEAELM AFSQWLQTLG VVPVIAALRE KALAIQAETM KSLERKLPHL SERDWKVLNK HTKSIINQLL RDPILQAKEL AAGPNAEEAL LLFMKIFNIE DAVKAERHIE QAKSVQCDEQ DAEAVRAARP SWQL //