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KHSE_NAUPA
ID   KHSE_NAUPA              Reviewed;         293 AA.
AC   B9L6E6;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 88.
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=NAMH_1545;
OS   Nautilia profundicola (strain ATCC BAA-1463 / DSM 18972 / AmH).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Nautiliales; Nautiliaceae;
OC   Nautilia.
OX   NCBI_TaxID=598659;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-1463 / DSM 18972 / AmH;
RX   PubMed=19197347; DOI=10.1371/journal.pgen.1000362;
RA   Campbell B.J., Smith J.L., Hanson T.E., Klotz M.G., Stein L.Y., Lee C.K.,
RA   Wu D., Robinson J.M., Khouri H.M., Eisen J.A., Cary S.C.;
RT   "Adaptations to submarine hydrothermal environments exemplified by the
RT   genome of Nautilia profundicola.";
RL   PLoS Genet. 5:E1000362-E1000362(2009).
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; CP001279; ACM93184.1; -; Genomic_DNA.
DR   RefSeq; WP_015902236.1; NC_012115.1.
DR   AlphaFoldDB; B9L6E6; -.
DR   SMR; B9L6E6; -.
DR   STRING; 598659.NAMH_1545; -.
DR   EnsemblBacteria; ACM93184; ACM93184; NAMH_1545.
DR   KEGG; nam:NAMH_1545; -.
DR   eggNOG; COG0083; Bacteria.
DR   HOGENOM; CLU_041243_0_0_7; -.
DR   OMA; CANRIPH; -.
DR   OrthoDB; 610857at2; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000000448; 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; Reference proteome; Threonine biosynthesis;
KW   Transferase.
FT   CHAIN           1..293
FT                   /note="Homoserine kinase"
FT                   /id="PRO_1000134257"
FT   BINDING         84..94
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ   SEQUENCE   293 AA;  33160 MW;  41324231A603B2A8 CRC64;
     MVITVPATSA NLGPGFDTLG LALNLRNEIE IVKSDYTSIE IYGENAEYLR TLKRNYFVEI
     FMDHYKNLTG KEDSFKFKFN NKIPLSRGLG SSSAVIIAAI TAAYEMAQVP YKKDRIINLA
     LSYEPHPDNI TPAALGGFCV AKLRKNRVYF LKKFIPTYLR AVVVIPNRTI STQKSRNALK
     AHYNLKDIVT NISSASMITA AFFSEKFEIL RNVVEDKIHQ ENRMKAVPEL FKVREIALRE
     GALMSTLSGS GSTFFNLAYK DDAYSIYNVL RDNFKDFTIK ILQFDNVGVK VYN
 
 
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