ID A0A1Z9Q2A1_9CYAN Unreviewed; 435 AA.
AC A0A1Z9Q2A1;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 24.
DE RecName: Full=Glutamyl-tRNA reductase {ECO:0000256|ARBA:ARBA00012970, ECO:0000256|HAMAP-Rule:MF_00087};
DE Short=GluTR {ECO:0000256|HAMAP-Rule:MF_00087};
DE EC=1.2.1.70 {ECO:0000256|ARBA:ARBA00012970, ECO:0000256|HAMAP-Rule:MF_00087};
GN Name=hemA {ECO:0000256|HAMAP-Rule:MF_00087};
GN ORFNames=CBD89_02680 {ECO:0000313|EMBL:OUW98412.1};
OS Cyanobacteria bacterium TMED229.
OC Bacteria; Cyanobacteriota.
OX NCBI_TaxID=1986679 {ECO:0000313|EMBL:OUW98412.1, ECO:0000313|Proteomes:UP000196226};
RN [1] {ECO:0000313|EMBL:OUW98412.1, ECO:0000313|Proteomes:UP000196226}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TMED229 {ECO:0000313|EMBL:OUW98412.1};
RA Tully B.J., Sachdeva R., Graham E.D., Heidelberg J.F.;
RT "290 Metagenome-assembled Genomes from the Mediterranean Sea: a resource
RT for marine microbiology.";
RL Submitted (MAY-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the NADPH-dependent reduction of glutamyl-tRNA(Glu)
CC to glutamate 1-semialdehyde (GSA). {ECO:0000256|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;
CC Evidence={ECO:0000256|ARBA:ARBA00001415, ECO:0000256|HAMAP-
CC Rule:MF_00087, ECO:0000256|RuleBase:RU000584};
CC -!- PATHWAY: Porphyrin-containing compound metabolism; protoporphyrin-IX
CC biosynthesis; 5-aminolevulinate from L-glutamyl-tRNA(Glu): step 1/2.
CC {ECO:0000256|ARBA:ARBA00005059, ECO:0000256|HAMAP-Rule:MF_00087,
CC ECO:0000256|RuleBase:RU000584}.
CC -!- SUBUNIT: Homodimer. {ECO:0000256|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:0000256|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:0000256|HAMAP-Rule:MF_00087}.
CC -!- SIMILARITY: Belongs to the glutamyl-tRNA reductase family.
CC {ECO:0000256|ARBA:ARBA00005916, ECO:0000256|HAMAP-Rule:MF_00087,
CC ECO:0000256|RuleBase:RU000584}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:OUW98412.1}.
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DR EMBL; NHKA01000013; OUW98412.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1Z9Q2A1; -.
DR UniPathway; UPA00251; UER00316.
DR Proteomes; UP000196226; Unassembled WGS sequence.
DR GO; GO:0008883; F:glutamyl-tRNA reductase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0050661; F:NADP binding; IEA:InterPro.
DR GO; GO:0015995; P:chlorophyll biosynthetic process; IEA:UniProtKB-KW.
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; PTHR43120; GLUTAMYL-TRNA REDUCTASE 1, CHLOROPLASTIC; 1.
DR PANTHER; PTHR43120:SF1; GLUTAMYL-TRNA REDUCTASE 1, CHLOROPLASTIC; 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 Coiled coil {ECO:0000256|SAM:Coils};
KW NADP {ECO:0000256|ARBA:ARBA00022857, ECO:0000256|HAMAP-Rule:MF_00087};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002, ECO:0000256|HAMAP-
KW Rule:MF_00087};
KW Porphyrin biosynthesis {ECO:0000256|ARBA:ARBA00023244, ECO:0000256|HAMAP-
KW Rule:MF_00087}.
FT DOMAIN 6..156
FT /note="Glutamyl-tRNA reductase N-terminal"
FT /evidence="ECO:0000259|Pfam:PF05201"
FT DOMAIN 187..315
FT /note="Quinate/shikimate 5-dehydrogenase/glutamyl-tRNA
FT reductase"
FT /evidence="ECO:0000259|Pfam:PF01488"
FT DOMAIN 329..429
FT /note="Tetrapyrrole biosynthesis glutamyl-tRNA reductase
FT dimerisation"
FT /evidence="ECO:0000259|Pfam:PF00745"
FT COILED 312..339
FT /evidence="ECO:0000256|SAM:Coils"
FT ACT_SITE 50
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-1"
FT BINDING 49..52
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-2"
FT BINDING 109
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-2"
FT BINDING 114..116
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-2"
FT BINDING 120
FT /ligand="substrate"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-2"
FT BINDING 198..203
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-3"
FT SITE 99
FT /note="Important for activity"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00087,
FT ECO:0000256|PIRSR:PIRSR000445-4"
SQ SEQUENCE 435 AA; 47964 MW; C0FFFA6497714F93 CRC64;
MHIAVVGLSH RTAPVEIRER LSIPEQTMET SLQSLRGNEQ VLEASILSTC NRLEIYTLVR
NPELGVSAVS DFLSGHSGLE SGELSPHLFS FHHEDAVDHL MRVAAGLDSL VLGEGQILSQ
VKKMMRLGQE HKSLGPILNR LLTQAVSTGK RVRSETNLGT GAVSISSAAV ELAQLKLGQS
KGLDQLVTLE SEQIAVVGAG RMSRLLLQHL QAKGATGVVL LNRTVERAEL LARDFPDLQV
QCRSLIDMDQ CLSTCSLVFT STAADDPIID AARLEPLNRR SRLRLIDIGV PRNIAADAGD
IDGVDAYDVD DLQEVVARNQ EARQAMAKEA EQLLQQEARQ FLEWWDSLEA VPTINRLRSS
MESIRNEELQ KALSRMGPDF SARERKVVEA LSKGIINKIL HTPVTQLRAP QGRQERQQAL
RTVEHLFDLE PQSDG
//
