ID A0A285X237_9FLAO Unreviewed; 358 AA.
AC A0A285X237;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 27-MAR-2024, entry version 21.
DE RecName: Full=Homoserine dehydrogenase {ECO:0000256|ARBA:ARBA00013213, ECO:0000256|RuleBase:RU000579};
DE EC=1.1.1.3 {ECO:0000256|ARBA:ARBA00013213, ECO:0000256|RuleBase:RU000579};
GN ORFNames=SAMN06296241_0310 {ECO:0000313|EMBL:SOC78794.1};
OS Salinimicrobium sediminis.
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Salinimicrobium.
OX NCBI_TaxID=1343891 {ECO:0000313|EMBL:SOC78794.1, ECO:0000313|Proteomes:UP000219193};
RN [1] {ECO:0000313|Proteomes:UP000219193}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CGMCC 1.12641 {ECO:0000313|Proteomes:UP000219193};
RA Varghese N., Submissions S.;
RL Submitted (SEP-2017) to the EMBL/GenBank/DDBJ databases.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-homoserine + NAD(+) = H(+) + L-aspartate 4-semialdehyde +
CC NADH; Xref=Rhea:RHEA:15757, ChEBI:CHEBI:15378, ChEBI:CHEBI:57476,
CC ChEBI:CHEBI:57540, ChEBI:CHEBI:57945, ChEBI:CHEBI:537519; EC=1.1.1.3;
CC Evidence={ECO:0000256|ARBA:ARBA00001406};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=L-homoserine + NADP(+) = H(+) + L-aspartate 4-semialdehyde +
CC NADPH; Xref=Rhea:RHEA:15761, ChEBI:CHEBI:15378, ChEBI:CHEBI:57476,
CC ChEBI:CHEBI:57783, ChEBI:CHEBI:58349, ChEBI:CHEBI:537519; EC=1.1.1.3;
CC Evidence={ECO:0000256|RuleBase:RU000579};
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via de novo
CC pathway; L-homoserine from L-aspartate: step 3/3.
CC {ECO:0000256|ARBA:ARBA00005062, ECO:0000256|RuleBase:RU000579}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 3/5. {ECO:0000256|ARBA:ARBA00005056,
CC ECO:0000256|RuleBase:RU000579}.
CC -!- SIMILARITY: Belongs to the homoserine dehydrogenase family.
CC {ECO:0000256|RuleBase:RU004171}.
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DR EMBL; OCMF01000001; SOC78794.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A285X237; -.
DR OrthoDB; 9799110at2; -.
DR UniPathway; UPA00050; UER00063.
DR UniPathway; UPA00051; UER00465.
DR Proteomes; UP000219193; Unassembled WGS sequence.
DR GO; GO:0004072; F:aspartate kinase activity; IEA:InterPro.
DR GO; GO:0004412; F:homoserine dehydrogenase activity; IEA:UniProtKB-EC.
DR GO; GO:0050661; F:NADP binding; IEA:InterPro.
DR GO; GO:0009097; P:isoleucine biosynthetic process; IEA:UniProtKB-KW.
DR GO; GO:0009086; P:methionine biosynthetic process; IEA:UniProtKB-KW.
DR GO; GO:0009088; P:threonine biosynthetic process; IEA:UniProtKB-UniPathway.
DR Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR InterPro; IPR005106; Asp/hSer_DH_NAD-bd.
DR InterPro; IPR011147; Bifunc_aspartokin/hSer_DH.
DR InterPro; IPR001342; HDH_cat.
DR InterPro; IPR019811; HDH_CS.
DR InterPro; IPR022697; HDH_short.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR PANTHER; PTHR43070; -; 1.
DR PANTHER; PTHR43070:SF3; HOMOSERINE DEHYDROGENASE; 1.
DR Pfam; PF00742; Homoserine_dh; 1.
DR Pfam; PF03447; NAD_binding_3; 1.
DR PIRSF; PIRSF036497; HDH_short; 1.
DR SUPFAM; SSF55347; Glyceraldehyde-3-phosphate dehydrogenase-like, C-terminal domain; 1.
DR SUPFAM; SSF51735; NAD(P)-binding Rossmann-fold domains; 1.
DR PROSITE; PS01042; HOMOSER_DHGENASE; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605,
KW ECO:0000256|RuleBase:RU000579};
KW Branched-chain amino acid biosynthesis {ECO:0000256|RuleBase:RU000579};
KW Isoleucine biosynthesis {ECO:0000256|RuleBase:RU000579};
KW Methionine biosynthesis {ECO:0000256|RuleBase:RU000579};
KW NADP {ECO:0000256|ARBA:ARBA00022857, ECO:0000256|PIRSR:PIRSR036497-2};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|RuleBase:RU000579};
KW Reference proteome {ECO:0000313|Proteomes:UP000219193};
KW Threonine biosynthesis {ECO:0000256|RuleBase:RU000579}.
FT DOMAIN 10..144
FT /note="Aspartate/homoserine dehydrogenase NAD-binding"
FT /evidence="ECO:0000259|Pfam:PF03447"
FT DOMAIN 152..350
FT /note="Homoserine dehydrogenase catalytic"
FT /evidence="ECO:0000259|Pfam:PF00742"
FT ACT_SITE 221
FT /note="Proton donor"
FT /evidence="ECO:0000256|PIRSR:PIRSR036497-1"
FT BINDING 10..15
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|PIRSR:PIRSR036497-2"
FT BINDING 93
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|PIRSR:PIRSR036497-2"
FT BINDING 117
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|PIRSR:PIRSR036497-2"
FT BINDING 206
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR036497-2"
SQ SEQUENCE 358 AA; 40318 MW; 82F06B886C442D1F CRC64;
MKKINLVLFG TGNVGSKLVH QVLQARKILQ EKEGLEINIP VIANSTIAFF QKENQQPSWE
TDLEKFGFPY KLNDILEYVR QQNYENLIAV DATASEEFVD HYFSLIESGF HIVAANKVAN
TRSSQFYLEL RKKLREHHKF FFYETNVGAG LPIVETLRSF HRSNERVTKV RGVFSGSLSY
IFNTYCAEEK AFSEVLSEAG VKGFTEPDPR VDLSGKDVAR KLLILGRELG LEKEFEEITI
QDLVPPHLNG QSTLKNFHEK KKDLDPIFLK LKKELKQDEV IRHVGELDLQ TGILDVKLVT
EKRTSALGSL QNADSSFEIF TESYGEQPLV IKGAGAGAAV TARGVLTDLI KLAEKLPS
//
