ID   KHSE_THEVO              Reviewed;         309 AA.
AC   Q979X5;
DT   16-APR-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2001, sequence version 1.
DT   03-AUG-2022, entry version 112.
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=TV1035;
GN   ORFNames=TVG1060320;
OS   Thermoplasma volcanium (strain ATCC 51530 / DSM 4299 / JCM 9571 / NBRC
OS   15438 / GSS1).
OC   Archaea; Candidatus Thermoplasmatota; Thermoplasmata; Thermoplasmatales;
OC   Thermoplasmataceae; Thermoplasma.
OX   NCBI_TaxID=273116;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 51530 / DSM 4299 / JCM 9571 / NBRC 15438 / GSS1;
RX   PubMed=11121031; DOI=10.1073/pnas.97.26.14257;
RA   Kawashima T., Amano N., Koike H., Makino S., Higuchi S., Kawashima-Ohya Y.,
RA   Watanabe K., Yamazaki M., Kanehori K., Kawamoto T., Nunoshiba T.,
RA   Yamamoto Y., Aramaki H., Makino K., Suzuki M.;
RT   "Archaeal adaptation to higher temperatures revealed by genomic sequence of
RT   Thermoplasma volcanium.";
RL   Proc. Natl. Acad. Sci. U.S.A. 97:14257-14262(2000).
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; BA000011; BAB60177.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q979X5; -.
DR   SMR; Q979X5; -.
DR   STRING; 273116.14325273; -.
DR   EnsemblBacteria; BAB60177; BAB60177; BAB60177.
DR   KEGG; tvo:TVG1060320; -.
DR   eggNOG; arCOG01027; Archaea.
DR   HOGENOM; CLU_041243_1_1_2; -.
DR   OMA; CANRIPH; -.
DR   PhylomeDB; Q979X5; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000001017; 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; IPR006203; GHMP_knse_ATP-bd_CS.
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.
DR   PROSITE; PS00627; GHMP_KINASES_ATP; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Cytoplasm; Kinase;
KW   Nucleotide-binding; Threonine biosynthesis; Transferase.
FT   CHAIN           1..309
FT                   /note="Homoserine kinase"
FT                   /id="PRO_0000156653"
FT   BINDING         85..95
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ   SEQUENCE   309 AA;  32698 MW;  E3E64A828508FD31 CRC64;
     MPSMELSVIS PCSSANLGPG YDVLAIAFDA FYDQVNVMLS DKLRILADEI PVQPDKNTAG
     LTALKMIEDF GIKDGIKISI KKGIPYGLGL GSSGSSAAAA AYAINNLFAL GLERKDLIKY
     AAVGELASSG SPHPDNVSAS ILGGLVIVSP EGISAKRIEV SDQFKFLLVI ADLKIRDKTK
     YARSLVPSGV SMGDHKRNTS RVASLIAGLM SGDRELVSTG MNDDIVEAAR EPIFPYYRRV
     KDTAIESGAV GAVVSGAGPS ILVVYDNKTE TKQMIRKISR IYEGMGISVN FATPNVADGV
     REVANPLAD