HEM1_MARN8
ID HEM1_MARN8 Reviewed; 429 AA.
AC A1U368;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 06-FEB-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=Maqu_2361;
OS Marinobacter nauticus (strain ATCC 700491 / DSM 11845 / VT8) (Marinobacter
OS aquaeolei).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Marinobacteraceae; Marinobacter.
OX NCBI_TaxID=351348;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 700491 / DSM 11845 / VT8;
RX PubMed=21335390; DOI=10.1128/aem.01866-10;
RA Singer E., Webb E.A., Nelson W.C., Heidelberg J.F., Ivanova N., Pati A.,
RA Edwards K.J.;
RT "Genomic potential of Marinobacter aquaeolei, a biogeochemical
RT 'opportunitroph'.";
RL Appl. Environ. Microbiol. 77:2763-2771(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}.
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; CP000514; ABM19437.1; -; Genomic_DNA.
DR RefSeq; WP_011785824.1; NC_008740.1.
DR AlphaFoldDB; A1U368; -.
DR SMR; A1U368; -.
DR STRING; 351348.Maqu_2361; -.
DR EnsemblBacteria; ABM19437; ABM19437; Maqu_2361.
DR KEGG; maq:Maqu_2361; -.
DR eggNOG; COG0373; Bacteria.
DR HOGENOM; CLU_035113_2_2_6; -.
DR OMA; FAFKCAA; -.
DR OrthoDB; 1358620at2; -.
DR UniPathway; UPA00251; UER00316.
DR Proteomes; UP000000998; 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.
FT CHAIN 1..429
FT /note="Glutamyl-tRNA reductase"
FT /id="PRO_1000004634"
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 107
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT BINDING 112..114
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 187..192
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
FT SITE 97
FT /note="Important for activity"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00087"
SQ SEQUENCE 429 AA; 47134 MW; 03E8C1B6367BCF94 CRC64;
MALVTLGINH RTAPVEIRER VAFTPERMAE AFSELRAASG ASEAAILSTC NRTELYLAGD
DDCAPSVLRW LAGFHELDVA DLENVLYVHR DSDAVRHMMR VAAGLDSMVL GEPQILGQLK
DAYALAREHS ATGSFLSRLF EQTFSVAKRV RTQTAIGENP VSVAYASVSM AHHIFADMSR
NKALLIGAGK TIELVARHLA EAGVRSFLVA NRTLEKAQAL AEAHGGKGIL LSEIPDHLSD
VDIVISSTAS PLPILGKGAV ERALKKRKHR PYFMVDIAVP RDIEPEVASL ADVYLYTVDD
LRQVIEENIR SREGAAREAE NLISSGVQDF LDQLRALDAV STLKVFRQRA ELLRDVETEK
ALRALRNGTD PETALRSLAR GLTNKLLHQP SVQVRKAMAE GRTEVTECLR ELYQLDALEA
DEPTTTEKL
