ID   HEM1_CORDI              Reviewed;         438 AA.
AC   Q6NJK1;
DT   01-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   27-MAR-2024, entry version 117.
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};
GN   OrderedLocusNames=DIP0400;
OS   Corynebacterium diphtheriae (strain ATCC 700971 / NCTC 13129 / Biotype
OS   gravis).
OC   Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales;
OC   Corynebacteriaceae; Corynebacterium.
OX   NCBI_TaxID=257309;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700971 / NCTC 13129 / Biotype gravis;
RX   PubMed=14602910; DOI=10.1093/nar/gkg874;
RA   Cerdeno-Tarraga A.-M., Efstratiou A., Dover L.G., Holden M.T.G.,
RA   Pallen M.J., Bentley S.D., Besra G.S., Churcher C.M., James K.D.,
RA   De Zoysa A., Chillingworth T., Cronin A., Dowd L., Feltwell T., Hamlin N.,
RA   Holroyd S., Jagels K., Moule S., Quail M.A., Rabbinowitsch E.,
RA   Rutherford K.M., Thomson N.R., Unwin L., Whitehead S., Barrell B.G.,
RA   Parkhill J.;
RT   "The complete genome sequence and analysis of Corynebacterium diphtheriae
RT   NCTC13129.";
RL   Nucleic Acids Res. 31:6516-6523(2003).
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; BX248355; CAE48904.1; -; Genomic_DNA.
DR   RefSeq; WP_010934271.1; NC_002935.2.
DR   AlphaFoldDB; Q6NJK1; -.
DR   SMR; Q6NJK1; -.
DR   STRING; 257309.DIP0400; -.
DR   DNASU; 2650204; -.
DR   GeneID; 69498670; -.
DR   KEGG; cdi:DIP0400; -.
DR   HOGENOM; CLU_035113_4_0_11; -.
DR   UniPathway; UPA00251; UER00316.
DR   Proteomes; UP000002198; 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..438
FT                   /note="Glutamyl-tRNA reductase"
FT                   /id="PRO_0000114015"
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         191..196
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   438 AA;  46918 MW;  2BF1FD0E18AAF184 CRC64;
     MSVLVVGMSH RSAPVALLEK LSMDDGVRTN TVSDLVARPS LAEAMIVSTC NRLEVYAMTS
     SFHTGVNDVV EVLHDMSGVD MEELRGYLYV RYADAAAEHM MEVTSGLDSM VVGEQQIIGQ
     VRTAYHSATE AGTVGPALHG LVQASLHTGK RVHTETDIDD AGASMVSFAC DEALAQMSAT
     NFAGCRALVL GAGAMASLAA THLGRLGIEH ITVANRTFER AQRLADHAVE AGVAASAIEF
     ERRMDVLCDV DVVVSATGAN TFTIEAANIP AAHGDLMMID LSLPRDISDD VAEVPGVHLV
     NIEKLRDVAS SGEAKDHAAQ RIVAEELEAY TSAQRIRDVA PAVAALRRHA SSLIDSELAR
     LSTRVPSMDE DDFSEVQRTV RRVVDKLLHQ PTVRVKELAA QSGTVSYDTA IQELFGLAVE
     ATPVAVNVDE LPERINKR
//