HEM1_LIMRD
ID HEM1_LIMRD Reviewed; 421 AA.
AC A5VM68;
DT 05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT 10-JUL-2007, sequence version 1.
DT 03-AUG-2022, entry version 92.
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=Lreu_1703;
OS Limosilactobacillus reuteri (strain DSM 20016) (Lactobacillus reuteri).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Lactobacillaceae;
OC Limosilactobacillus.
OX NCBI_TaxID=557436;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 20016;
RX PubMed=21379339; DOI=10.1371/journal.pgen.1001314;
RA Frese S.A., Benson A.K., Tannock G.W., Loach D.M., Kim J., Zhang M.,
RA Oh P.L., Heng N.C., Patil P.B., Juge N., Mackenzie D.A., Pearson B.M.,
RA Lapidus A., Dalin E., Tice H., Goltsman E., Land M., Hauser L., Ivanova N.,
RA Kyrpides N.C., Walter J.;
RT "The evolution of host specialization in the vertebrate gut symbiont
RT Lactobacillus reuteri.";
RL PLoS Genet. 7:E1001314-E1001314(2011).
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}.
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DR EMBL; CP000705; ABQ83942.1; -; Genomic_DNA.
DR RefSeq; WP_011953572.1; NZ_AZDD01000019.1.
DR AlphaFoldDB; A5VM68; -.
DR SMR; A5VM68; -.
DR STRING; 557436.Lreu_1703; -.
DR PRIDE; A5VM68; -.
DR EnsemblBacteria; ABQ83942; ABQ83942; Lreu_1703.
DR GeneID; 66471880; -.
DR KEGG; lre:Lreu_1703; -.
DR PATRIC; fig|557436.17.peg.625; -.
DR eggNOG; COG0373; Bacteria.
DR HOGENOM; CLU_035113_2_2_9; -.
DR OMA; FAFKCAA; -.
DR UniPathway; UPA00251; UER00316.
DR Proteomes; UP000001991; 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 Gene3D; 3.30.460.30; -; 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 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; SSF51735; SSF51735; 1.
DR SUPFAM; SSF69075; SSF69075; 1.
DR SUPFAM; SSF69742; SSF69742; 1.
DR TIGRFAMs; TIGR01035; hemA; 1.
DR PROSITE; PS00747; GLUTR; 1.
PE 3: Inferred from homology;
KW NADP; Oxidoreductase; Porphyrin biosynthesis; Reference proteome.
FT CHAIN 1..421
FT /note="Glutamyl-tRNA reductase"
FT /id="PRO_1000057576"
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 421 AA; 47865 MW; 8967FAB42B1FAD0D CRC64;
MYLMCVSLNY HQLPLDLREK FSFTKEEVPK ADKLLNDEKS ILENLLISTC NRTEVYAVVD
QIHTGRYYIR RFLAEWFHYT IDDFTKFVTV TTKDAVAEHL FKVITGLDSL IKGEPQILGQ
MKDAFQIATK EGTTGAILNH LFRQAITFSK RMHTKYRVSE LAQSSGQAGL HQIKMQFGSL
EGKTLAVVGL GQIGKHTAYN ASNMGFSKVL LLNRTDSKAE QIATELQGVV EARPFNQLAT
VVHNVDAAIF AATVKQPLFK ADEQISTMIV DLGVPRNVAV NSTKLKYYDV DHVHMILNSN
DEKRRLMIQK IANEIPQEVN DFYIWEKQLH IVPVIRGLRE HSLRIEGEAY DSLLRKLPEL
DSHERKVISK HMKSIVNQMI KGPIKEIKEL SVTPGATADI DFFCKIFGMD NLKVENQNND
K
