ID D3H828_STRM6 Unreviewed; 428 AA.
AC D3H828;
DT 23-MAR-2010, integrated into UniProtKB/TrEMBL.
DT 23-MAR-2010, sequence version 1.
DT 27-MAR-2024, entry version 73.
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 Name=thrA {ECO:0000313|EMBL:CBJ22021.1};
GN OrderedLocusNames=smi_0773 {ECO:0000313|EMBL:CBJ22021.1};
OS Streptococcus mitis (strain B6).
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=365659 {ECO:0000313|EMBL:CBJ22021.1, ECO:0000313|Proteomes:UP000008563};
RN [1] {ECO:0000313|EMBL:CBJ22021.1, ECO:0000313|Proteomes:UP000008563}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=B6 {ECO:0000313|EMBL:CBJ22021.1,
RC ECO:0000313|Proteomes:UP000008563};
RX PubMed=20195536; DOI=10.1371/journal.pone.0009426;
RA Denapaite D., Brueckner R., Nuhn M., Reichmann P., Henrich B., Maurer P.,
RA Schaehle Y., Selbmann P., Zimmermann W., Wambutt R., Hakenbeck R.;
RT "The genome of Streptococcus mitis B6--what is a commensal?";
RL PLoS ONE 5:E9426-E9426(2010).
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|RuleBase:RU000579}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 3/5. {ECO:0000256|RuleBase:RU000579}.
CC -!- SIMILARITY: Belongs to the homoserine dehydrogenase family.
CC {ECO:0000256|ARBA:ARBA00006753, ECO:0000256|RuleBase:RU004171}.
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DR EMBL; FN568063; CBJ22021.1; -; Genomic_DNA.
DR RefSeq; WP_000216350.1; NC_013853.1.
DR RefSeq; YP_003445888.1; NC_013853.1.
DR AlphaFoldDB; D3H828; -.
DR SMR; D3H828; -.
DR STRING; 365659.smi_0773; -.
DR KEGG; smb:smi_0773; -.
DR PATRIC; fig|365659.3.peg.762; -.
DR eggNOG; COG0460; Bacteria.
DR HOGENOM; CLU_009116_1_0_9; -.
DR OrthoDB; 9808167at2; -.
DR UniPathway; UPA00050; UER00063.
DR UniPathway; UPA00051; UER00465.
DR Proteomes; UP000008563; Chromosome.
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 CDD; cd04881; ACT_HSDH-Hom; 1.
DR Gene3D; 3.30.70.260; -; 1.
DR Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR InterPro; IPR045865; ACT-like_dom_sf.
DR InterPro; IPR002912; ACT_dom.
DR InterPro; IPR005106; Asp/hSer_DH_NAD-bd.
DR InterPro; IPR016204; HDH.
DR InterPro; IPR001342; HDH_cat.
DR InterPro; IPR019811; HDH_CS.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR PANTHER; PTHR43331; HOMOSERINE DEHYDROGENASE; 1.
DR PANTHER; PTHR43331:SF1; HOMOSERINE DEHYDROGENASE; 1.
DR Pfam; PF00742; Homoserine_dh; 1.
DR Pfam; PF03447; NAD_binding_3; 1.
DR PIRSF; PIRSF000098; Homoser_dehydrog; 1.
DR SUPFAM; SSF55021; ACT-like; 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; PS51671; ACT; 1.
DR PROSITE; PS01042; HOMOSER_DHGENASE; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {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|PIRSR:PIRSR000098-2, ECO:0000256|RuleBase:RU000579};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|RuleBase:RU000579};
KW Threonine biosynthesis {ECO:0000256|RuleBase:RU000579}.
FT DOMAIN 351..425
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
FT ACT_SITE 206
FT /note="Proton donor"
FT /evidence="ECO:0000256|PIRSR:PIRSR000098-1"
FT BINDING 106
FT /ligand="NADP(+)"
FT /ligand_id="ChEBI:CHEBI:58349"
FT /evidence="ECO:0000256|PIRSR:PIRSR000098-2"
FT BINDING 191
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR000098-2"
SQ SEQUENCE 428 AA; 46249 MW; 4F7A0973DD1CE5CD CRC64;
MTVKIALLGF GTVASGVPFL LKENGEKINQ SAHSEIEVAK VLVKDEDEKN RLLAAGNDFN
FVTNVDDILS DQDITIVVEL MGRIEPAKTF ITRALEAGKH VVTANKDLLA VHGAELLEIA
QANKVALYYE AAVAGGIPIL RTLANSLASD KITRVLGVVN GTSNFMMTKM VEEGWSYDDA
LAEAQRLGFA ESDPTNDVDG IDAAYKMVIL SQFAFGMKVA FDDVAHKGIR NITPEDVAVA
QELGYVVKLV GSIEETPSGI AAEVTPTFLP KAHPLASVNG VMNAVFVESI GIGESMYYGP
GAGQKPTATS VVADIVRIVR RLNDGTIGKD FNEYSRDLVL ANPEDVKANY YFSILAPDSK
GQVLKLAEIF NAQDISFKQI LQDGKEGDKA RVVIITHKIN KTQLENVSAE LKKVSEFDLL
NTFKVLGE
//
