ID   HEM12_LACP7             Reviewed;         413 AA.
AC   A9KSC2;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   05-FEB-2008, sequence version 1.
DT   27-MAR-2024, entry version 92.
DE   RecName: Full=Glutamyl-tRNA reductase 2 {ECO:0000255|HAMAP-Rule:MF_00087};
DE            Short=GluTR 2 {ECO:0000255|HAMAP-Rule:MF_00087};
DE            EC=1.2.1.70 {ECO:0000255|HAMAP-Rule:MF_00087};
GN   Name=hemA2 {ECO:0000255|HAMAP-Rule:MF_00087};
GN   OrderedLocusNames=Cphy_1784;
OS   Lachnoclostridium phytofermentans (strain ATCC 700394 / DSM 18823 / ISDg)
OS   (Clostridium phytofermentans).
OC   Bacteria; Bacillota; Clostridia; Eubacteriales; Lachnospiraceae.
OX   NCBI_TaxID=357809;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700394 / DSM 18823 / ISDg;
RA   Leschine S.B., Warnick T.A., Blanchard J.L., Schnell D.J., Petit E.L.,
RA   LaTouf W.G., Copeland A., Lucas S., Lapidus A., Barry K.,
RA   Glavina del Rio T., Dalin E., Tice H., Pitluck S., Kiss H., Brettin T.,
RA   Bruce D., Detter J.C., Han C., Kuske C., Schmutz J., Larimer F., Land M.,
RA   Hauser L., Kyrpides N., Kim E.A., Richardson P.;
RT   "Complete genome sequence of Clostridium phytofermentans ISDg.";
RL   Submitted (NOV-2007) to the EMBL/GenBank/DDBJ databases.
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; CP000885; ABX42154.1; -; Genomic_DNA.
DR   RefSeq; WP_012199808.1; NC_010001.1.
DR   AlphaFoldDB; A9KSC2; -.
DR   SMR; A9KSC2; -.
DR   STRING; 357809.Cphy_1784; -.
DR   KEGG; cpy:Cphy_1784; -.
DR   eggNOG; COG0373; Bacteria.
DR   HOGENOM; CLU_035113_1_0_9; -.
DR   OrthoDB; 110209at2; -.
DR   UniPathway; UPA00251; UER00316.
DR   Proteomes; UP000000370; 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; 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..413
FT                   /note="Glutamyl-tRNA reductase 2"
FT                   /id="PRO_0000335024"
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         106
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT   BINDING         111..113
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT   BINDING         117
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT   BINDING         186..191
FT                   /ligand="NADP(+)"
FT                   /ligand_id="ChEBI:CHEBI:58349"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
SQ   SEQUENCE   413 AA;  47150 MW;  98276B1B10DCAAFA CRC64;
     MNISMVGIDY NTASIEDREH FTLTSDKQLE IAKIIKETYH ASGCIILSTC NRTEIWFSEL
     GTSEAECFHQ LVLGENAKET MRSICVCRQG DEAVTYLMEL GCGIHSQIFG EDQILTQLKQ
     ALQQARDYQY VDSVLECLFR TAITAAKKVK TSIQIAKGNT SLPQTIVEQL EKEQGDLLGK
     SCLVIGNGEM GRLMTEKLLE KKCKVWMTLR QYKKSKAIIP EGSGVVLYDE RYEHIAVMDY
     IFSATKSHHF TINKSMFENI RLKGKTYCLI DLAIPRDIEP SVEELSDVTV YNMDYFCQEV
     NDREKELEET RELLSEYVNE FKQWYQFRNL VSTVDDISNI VSDITDAKLT KVYKSIDLSR
     EQQELLQSNV QMAAKKAVSK IIFGLRDVLQ IDQCEEVLQA LEQSAMNCTD SVK
//