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KHSE_CAUSK
ID   KHSE_CAUSK              Reviewed;         320 AA.
AC   B0T024;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   03-AUG-2022, entry version 72.
DE   RecName: Full=Homoserine kinase {ECO:0000255|HAMAP-Rule:MF_00301};
DE            Short=HK {ECO:0000255|HAMAP-Rule:MF_00301};
DE            Short=HSK {ECO:0000255|HAMAP-Rule:MF_00301};
DE            EC=2.7.1.39 {ECO:0000255|HAMAP-Rule:MF_00301};
GN   Name=thrB {ECO:0000255|HAMAP-Rule:MF_00301}; OrderedLocusNames=Caul_4394;
OS   Caulobacter sp. (strain K31).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Caulobacterales;
OC   Caulobacteraceae; Caulobacter; unclassified Caulobacter.
OX   NCBI_TaxID=366602;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=K31;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA   Tice H., Pitluck S., Bruce D., Goodwin L., Thompson L.S., Brettin T.,
RA   Detter J.C., Han C., Schmutz J., Larimer F., Land M., Hauser L.,
RA   Kyrpides N., Kim E., Stephens C., Richardson P.;
RT   "Complete sequence of chromosome of Caulobacter sp. K31.";
RL   Submitted (JAN-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-homoserine = ADP + H(+) + O-phospho-L-homoserine;
CC         Xref=Rhea:RHEA:13985, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:57476, ChEBI:CHEBI:57590, ChEBI:CHEBI:456216;
CC         EC=2.7.1.39; Evidence={ECO:0000255|HAMAP-Rule:MF_00301};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC       from L-aspartate: step 4/5. {ECO:0000255|HAMAP-Rule:MF_00301}.
CC   -!- SIMILARITY: Belongs to the pseudomonas-type ThrB family.
CC       {ECO:0000255|HAMAP-Rule:MF_00301}.
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DR   EMBL; CP000927; ABZ73514.1; -; Genomic_DNA.
DR   RefSeq; WP_012288391.1; NC_010338.1.
DR   AlphaFoldDB; B0T024; -.
DR   SMR; B0T024; -.
DR   STRING; 366602.Caul_4394; -.
DR   EnsemblBacteria; ABZ73514; ABZ73514; Caul_4394.
DR   KEGG; cak:Caul_4394; -.
DR   eggNOG; COG2334; Bacteria.
DR   HOGENOM; CLU_053300_1_0_5; -.
DR   OMA; DPTHFER; -.
DR   OrthoDB; 1003984at2; -.
DR   UniPathway; UPA00050; UER00064.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0004413; F:homoserine kinase activity; 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; cd05153; HomoserineK_II; 1.
DR   HAMAP; MF_00301; Homoser_kinase_2; 1.
DR   InterPro; IPR002575; Aminoglycoside_PTrfase.
DR   InterPro; IPR005280; Homoserine_kinase_II.
DR   InterPro; IPR011009; Kinase-like_dom_sf.
DR   Pfam; PF01636; APH; 1.
DR   SUPFAM; SSF56112; SSF56112; 1.
DR   TIGRFAMs; TIGR00938; thrB_alt; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Kinase; Nucleotide-binding;
KW   Threonine biosynthesis; Transferase.
FT   CHAIN           1..320
FT                   /note="Homoserine kinase"
FT                   /id="PRO_1000079018"
SQ   SEQUENCE   320 AA;  34978 MW;  8E4AC4E394A47285 CRC64;
     MAVYTDITDD ELAAFLGDYD LGQAVAFKGI AEGVENSNFL LETTTGRFIL TVYERRAKPE
     DLPYFLDLLT WLADHGYPSA KPIADRSGAT LKTIRGKPAA LVEFLPGLSA RRPTVAHCRE
     AGEGLAWLHL AGEGYPARRA NDLGQPHWAS LFSKHRKDAE GLKPGLAATI DKDLAELALA
     WPRGLPSGVI HADYFPDNVF FKPDGKFAAA IDFYFACDDA YAYDIAVTLN AWCFESDGSF
     NITAARALIA GYERRRPLSP AERDAIPILA RGAAMRFFLT RLADWGSTPA GALVRPKDPL
     EYERKLAVHR EGLSLFGAGA
 
 
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