ID   KHSE_THEKO              Reviewed;         292 AA.
AC   Q5JH53;
DT   30-AUG-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-FEB-2005, sequence version 1.
DT   03-AUG-2022, entry version 99.
DE   RecName: Full=Homoserine kinase {ECO:0000255|HAMAP-Rule:MF_00384};
DE            Short=HK {ECO:0000255|HAMAP-Rule:MF_00384};
DE            Short=HSK {ECO:0000255|HAMAP-Rule:MF_00384};
DE            EC=2.7.1.39 {ECO:0000255|HAMAP-Rule:MF_00384};
GN   Name=thrB {ECO:0000255|HAMAP-Rule:MF_00384}; OrderedLocusNames=TK1444;
OS   Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)
OS   (Pyrococcus kodakaraensis (strain KOD1)).
OC   Archaea; Euryarchaeota; Thermococci; Thermococcales; Thermococcaceae;
OC   Thermococcus.
OX   NCBI_TaxID=69014;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-918 / JCM 12380 / KOD1;
RX   PubMed=15710748; DOI=10.1101/gr.3003105;
RA   Fukui T., Atomi H., Kanai T., Matsumi R., Fujiwara S., Imanaka T.;
RT   "Complete genome sequence of the hyperthermophilic archaeon Thermococcus
RT   kodakaraensis KOD1 and comparison with Pyrococcus genomes.";
RL   Genome Res. 15:352-363(2005).
CC   -!- FUNCTION: Catalyzes the ATP-dependent phosphorylation of L-homoserine
CC       to L-homoserine phosphate. {ECO:0000255|HAMAP-Rule:MF_00384}.
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_00384};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC       from L-aspartate: step 4/5. {ECO:0000255|HAMAP-Rule:MF_00384}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00384}.
CC   -!- SIMILARITY: Belongs to the GHMP kinase family. Homoserine kinase
CC       subfamily. {ECO:0000255|HAMAP-Rule:MF_00384}.
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DR   EMBL; AP006878; BAD85633.1; -; Genomic_DNA.
DR   RefSeq; WP_011250395.1; NC_006624.1.
DR   AlphaFoldDB; Q5JH53; -.
DR   SMR; Q5JH53; -.
DR   STRING; 69014.TK1444; -.
DR   EnsemblBacteria; BAD85633; BAD85633; TK1444.
DR   GeneID; 3233676; -.
DR   KEGG; tko:TK1444; -.
DR   PATRIC; fig|69014.16.peg.1406; -.
DR   eggNOG; arCOG01027; Archaea.
DR   HOGENOM; CLU_041243_0_2_2; -.
DR   InParanoid; Q5JH53; -.
DR   OMA; NIAPSIM; -.
DR   OrthoDB; 91752at2157; -.
DR   PhylomeDB; Q5JH53; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000000536; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
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   Gene3D; 3.30.230.10; -; 1.
DR   Gene3D; 3.30.70.890; -; 1.
DR   HAMAP; MF_00384; Homoser_kinase; 1.
DR   InterPro; IPR013750; GHMP_kinase_C_dom.
DR   InterPro; IPR036554; GHMP_kinase_C_sf.
DR   InterPro; IPR006204; GHMP_kinase_N_dom.
DR   InterPro; IPR000870; Homoserine_kinase.
DR   InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR   InterPro; IPR014721; Ribosomal_S5_D2-typ_fold_subgr.
DR   Pfam; PF08544; GHMP_kinases_C; 1.
DR   Pfam; PF00288; GHMP_kinases_N; 1.
DR   PIRSF; PIRSF000676; Homoser_kin; 1.
DR   SUPFAM; SSF54211; SSF54211; 1.
DR   SUPFAM; SSF55060; SSF55060; 1.
DR   TIGRFAMs; TIGR00191; thrB; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Cytoplasm; Kinase;
KW   Nucleotide-binding; Reference proteome; Threonine biosynthesis;
KW   Transferase.
FT   CHAIN           1..292
FT                   /note="Homoserine kinase"
FT                   /id="PRO_0000156648"
FT   BINDING         81..91
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ   SEQUENCE   292 AA;  31146 MW;  DA10531B5C8A0B96 CRC64;
     MRIRVPATIA NFGPGFDVFG VGIGEPYDEL KFVESDEWEI EVEGYDVPTD GRNVAVVAAR
     ALATLVGEEL YLRMKLRKEI RPRSGLGSSG ASSLAGALAA ARVLGIEDDG LIIKAALAGE
     EAASGSAHGD NVVPAYYGDF TIIESLNPLR VHRIPVDFPL VVVLPQIEVP TREARRILPE
     RVPMGDAVRN VALAGALVKA LTSGDVQTVG RLLEDRIALP YRLRLMPWFA RVWKAALDAG
     AYGAFVSGSG PAIFALGEDL HAIGKAIAEA FLEIGVDAEV YITRAGVGAF WL