HEM1_ACTP2
ID HEM1_ACTP2 Reviewed; 436 AA.
AC A3MZC2;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 03-APR-2007, sequence version 1.
DT 03-AUG-2022, entry version 100.
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=APL_0404;
OS Actinobacillus pleuropneumoniae serotype 5b (strain L20).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Actinobacillus.
OX NCBI_TaxID=416269;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=L20;
RX PubMed=18065534; DOI=10.1128/jb.01845-07;
RA Foote S.J., Bosse J.T., Bouevitch A.B., Langford P.R., Young N.M.,
RA Nash J.H.E.;
RT "The complete genome sequence of Actinobacillus pleuropneumoniae L20
RT (serotype 5b).";
RL J. Bacteriol. 190:1495-1496(2008).
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; CP000569; ABN73508.1; -; Genomic_DNA.
DR RefSeq; WP_009875152.1; NC_009053.1.
DR AlphaFoldDB; A3MZC2; -.
DR SMR; A3MZC2; -.
DR STRING; 416269.APL_0404; -.
DR EnsemblBacteria; ABN73508; ABN73508; APL_0404.
DR KEGG; apl:APL_0404; -.
DR PATRIC; fig|416269.6.peg.417; -.
DR eggNOG; COG0373; Bacteria.
DR HOGENOM; CLU_035113_2_2_6; -.
DR OMA; FAFKCAA; -.
DR UniPathway; UPA00251; UER00316.
DR Proteomes; UP000001432; 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..436
FT /note="Glutamyl-tRNA reductase"
FT /id="PRO_1000004588"
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 118
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 123..125
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 129
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 203..208
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT SITE 108
FT /note="Important for activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
SQ SEQUENCE 436 AA; 49467 MW; 91663CBAE40792C4 CRC64;
MTILALGINH KTASVNLRSK VAFDDQKRQL AFEQIQHRAL AESVVILSTC NRTELYFHNA
EITPREEHED NIAWREQCFE WFAEIHQLEH NELRECIYFK QNMESARHLM RVACGLDSLI
LGEPQILGQV KQAYQYSENF YQSQNSHIST KLSRLFQRTF STAKRVRSET EIGSSAVSVA
YAACGLARQI FDNFGKLRFL LVGAGETIEL VARYLIQHGA KNIMIANRTP QRAETLAERL
NTPMQILSLS ALQIGLNQAD IVISSTGSPD MLISKEMVEI AQKQRQFDPM LLIDIAVPRD
IDENAGELDA VYSYSVDDLQ HIIQRNMAQR EQAAEQAAQI VDEECKAFFE WLKQQQSSDL
IKRYRQDAEQ TRQELLAKAL VALTSGQDSE KVLNELSYKL TNSLLHVPTQ ALQAMAKSGN
SQGLQSFSKA LKLEEQ
