ID Q8RMX0_ECOLX Unreviewed; 820 AA.
AC Q8RMX0;
DT 01-JUN-2002, integrated into UniProtKB/TrEMBL.
DT 01-JUN-2002, sequence version 1.
DT 27-MAR-2024, entry version 105.
DE RecName: Full=Bifunctional aspartokinase/homoserine dehydrogenase {ECO:0000256|PIRNR:PIRNR000727};
DE Includes:
DE RecName: Full=Aspartokinase {ECO:0000256|PIRNR:PIRNR000727};
DE EC=2.7.2.4 {ECO:0000256|PIRNR:PIRNR000727};
DE Includes:
DE RecName: Full=Homoserine dehydrogenase {ECO:0000256|PIRNR:PIRNR000727};
DE EC=1.1.1.3 {ECO:0000256|PIRNR:PIRNR000727};
GN Name=thrA {ECO:0000313|EMBL:AAL90885.1};
OS Escherichia coli.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC Enterobacteriaceae; Escherichia.
OX NCBI_TaxID=562 {ECO:0000313|EMBL:AAL90885.1};
RN [1] {ECO:0000313|EMBL:AAL90885.1}
RP NUCLEOTIDE SEQUENCE.
RA Hwang Y.-I.;
RT "E. coli thrA gene encoding mutant aspartokinase I-homoserine dehydrogenase
RT I.";
RL Submitted (FEB-2002) to the EMBL/GenBank/DDBJ databases.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-aspartate = 4-phospho-L-aspartate + ADP;
CC Xref=Rhea:RHEA:23776, ChEBI:CHEBI:29991, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:57535, ChEBI:CHEBI:456216; EC=2.7.2.4;
CC Evidence={ECO:0000256|ARBA:ARBA00000709,
CC ECO:0000256|PIRNR:PIRNR000727};
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|ARBA:ARBA00000116,
CC ECO:0000256|PIRNR:PIRNR000727};
CC -!- PATHWAY: Amino-acid biosynthesis; L-lysine biosynthesis via DAP
CC pathway; (S)-tetrahydrodipicolinate from L-aspartate: step 1/4.
CC {ECO:0000256|ARBA:ARBA00004766, ECO:0000256|PIRNR:PIRNR000727}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-methionine biosynthesis via de novo
CC pathway; L-homoserine from L-aspartate: step 1/3.
CC {ECO:0000256|ARBA:ARBA00004986, ECO:0000256|PIRNR:PIRNR000727}.
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|PIRNR:PIRNR000727}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 1/5. {ECO:0000256|ARBA:ARBA00005139,
CC ECO:0000256|PIRNR:PIRNR000727}.
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 3/5. {ECO:0000256|ARBA:ARBA00005056,
CC ECO:0000256|PIRNR:PIRNR000727}.
CC -!- SUBUNIT: Homotetramer. {ECO:0000256|ARBA:ARBA00011881,
CC ECO:0000256|PIRNR:PIRNR000727}.
CC -!- SIMILARITY: In the C-terminal section; belongs to the homoserine
CC dehydrogenase family. {ECO:0000256|ARBA:ARBA00007952,
CC ECO:0000256|PIRNR:PIRNR000727}.
CC -!- SIMILARITY: In the N-terminal section; belongs to the aspartokinase
CC family. {ECO:0000256|ARBA:ARBA00010046, ECO:0000256|PIRNR:PIRNR000727}.
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DR EMBL; AF487900; AAL90885.1; -; Genomic_DNA.
DR AlphaFoldDB; Q8RMX0; -.
DR UniPathway; UPA00034; UER00015.
DR UniPathway; UPA00050; UER00063.
DR UniPathway; UPA00051; UER00462.
DR GO; GO:0004072; F:aspartate kinase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004412; F:homoserine dehydrogenase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0050661; F:NADP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0009089; P:lysine biosynthetic process via diaminopimelate; IEA:UniProtKB-UniRule.
DR GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR GO; GO:0009088; P:threonine biosynthetic process; IEA:UniProtKB-UniRule.
DR CDD; cd04257; AAK_AK-HSDH; 1.
DR CDD; cd04921; ACT_AKi-HSDH-ThrA-like_1; 1.
DR CDD; cd04922; ACT_AKi-HSDH-ThrA_2; 1.
DR Gene3D; 3.40.1160.10; Acetylglutamate kinase-like; 1.
DR Gene3D; 3.40.50.720; NAD(P)-binding Rossmann-like Domain; 1.
DR Gene3D; 3.30.2130.10; VC0802-like; 1.
DR InterPro; IPR036393; AceGlu_kinase-like_sf.
DR InterPro; IPR045865; ACT-like_dom_sf.
DR InterPro; IPR002912; ACT_dom.
DR InterPro; IPR049638; AK-HD.
DR InterPro; IPR041743; AK-HSDH_N.
DR InterPro; IPR001048; Asp/Glu/Uridylate_kinase.
DR InterPro; IPR005106; Asp/hSer_DH_NAD-bd.
DR InterPro; IPR001341; Asp_kinase.
DR InterPro; IPR018042; Aspartate_kinase_CS.
DR InterPro; IPR011147; Bifunc_aspartokin/hSer_DH.
DR InterPro; IPR027795; CASTOR_ACT_dom.
DR InterPro; IPR001342; HDH_cat.
DR InterPro; IPR019811; HDH_CS.
DR InterPro; IPR036291; NAD(P)-bd_dom_sf.
DR NCBIfam; TIGR00657; asp_kinases; 1.
DR PANTHER; PTHR43070; -; 1.
DR PANTHER; PTHR43070:SF3; HOMOSERINE DEHYDROGENASE; 1.
DR Pfam; PF00696; AA_kinase; 1.
DR Pfam; PF13840; ACT_7; 2.
DR Pfam; PF00742; Homoserine_dh; 1.
DR Pfam; PF03447; NAD_binding_3; 1.
DR PIRSF; PIRSF000727; ThrA; 1.
DR SUPFAM; SSF55021; ACT-like; 2.
DR SUPFAM; SSF53633; Carbamate kinase-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; PS00324; ASPARTOKINASE; 1.
DR PROSITE; PS01042; HOMOSER_DHGENASE; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605,
KW ECO:0000256|PIRNR:PIRNR000727};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|PIRNR:PIRNR000727};
KW Kinase {ECO:0000256|ARBA:ARBA00022777, ECO:0000256|PIRNR:PIRNR000727};
KW Multifunctional enzyme {ECO:0000256|ARBA:ARBA00023268};
KW NADP {ECO:0000256|ARBA:ARBA00022857, ECO:0000256|PIRNR:PIRNR000727};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW ECO:0000256|PIRNR:PIRNR000727};
KW Oxidoreductase {ECO:0000256|ARBA:ARBA00023002,
KW ECO:0000256|PIRNR:PIRNR000727}; Repeat {ECO:0000256|ARBA:ARBA00022737};
KW Threonine biosynthesis {ECO:0000256|ARBA:ARBA00022697};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR000727}.
FT DOMAIN 401..478
FT /note="ACT"
FT /evidence="ECO:0000259|PROSITE:PS51671"
SQ SEQUENCE 820 AA; 89180 MW; 4BEF25E8B5DAC3B4 CRC64;
MRVLKFGGTS VANAERFLRV ADILESNARQ GQVATVLSAP AKITNHLVAM IEKTISGQDA
LPNISDAERI FAELLTGLAA AQPGFPLAQL KTFVDQEFAQ IKHVLHGISL LGQCPDSINA
ALICRGEKMS IAIMAGVLEA RGHNVTVIDP VEKLLAVGHY LESTVDIAES TRRIAASRIP
ADHMVLMAGF TAGNEKGELV VLGRNGSDYS AAVLAACLRA DCCEIWTDVD GVYTCDPRQV
PDARLLKSMS YQEAMELSYF GAKVLHPRTI TPIAQFQIPC LIKNTGNPQA PGTLIGASRD
EDELPVKGIS NLNNMAMFSV SGPGMKGMVG MAARVFAAMS RARIFVVLIT QSSSEYSISF
CVPQSDCVRA ERAMQEEFYL ELKEGLLEPL AVTERLAIIS VVGDGMRTLR GISAKFFAAL
ARANINIVAI AQGSSERSIS VVVNNDDATT GVRVTHQMLF NTDQVIEVFV IGVGGVGGAL
LEQLKRQQSW LKNKHIDLRV CGVANSKALL TNVHGLNLEN WQEELAQAKE PFNLGRLIRL
VKEYHLLNPV IVDCTSSQAV ADQYADFLRE GFHVVTPNKK ANTSSMDYYH QLRYAAEKSR
RKFLYDTNVG AGLPVIENLQ NLLNAGDELM KFSGILSGSL SYIFGKLDEG MSFSEATTLA
REMGYTEPDP RDDLSGMDVA RKLLILARET GRELELADIE IEPVLPAEFN AEGDVAAFMA
NLSQLDDLFA ARVAKARDEG KVLRYVGNID EDGVCRVKIA EVDGNDPLFK VKNGENALAF
YSHYYQPLPL VLRGYGAGND VTAAGVFADL LRTLSWKLGV
//
