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KHSE_CALS4
ID   KHSE_CALS4              Reviewed;         312 AA.
AC   Q8R711;
DT   26-JUL-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2002, 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=TTE2618;
OS   Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM
OS   11007 / NBRC 100824 / MB4) (Thermoanaerobacter tengcongensis).
OC   Bacteria; Firmicutes; Clostridia; Thermoanaerobacterales;
OC   Thermoanaerobacteraceae; Caldanaerobacter.
OX   NCBI_TaxID=273068;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=DSM 15242 / JCM 11007 / NBRC 100824 / MB4;
RX   PubMed=11997336; DOI=10.1101/gr.219302;
RA   Bao Q., Tian Y., Li W., Xu Z., Xuan Z., Hu S., Dong W., Yang J., Chen Y.,
RA   Xue Y., Xu Y., Lai X., Huang L., Dong X., Ma Y., Ling L., Tan H., Chen R.,
RA   Wang J., Yu J., Yang H.;
RT   "A complete sequence of the T. tengcongensis genome.";
RL   Genome Res. 12:689-700(2002).
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; AE008691; AAM25738.1; -; Genomic_DNA.
DR   RefSeq; WP_011026613.1; NC_003869.1.
DR   AlphaFoldDB; Q8R711; -.
DR   SMR; Q8R711; -.
DR   STRING; 273068.TTE2618; -.
DR   EnsemblBacteria; AAM25738; AAM25738; TTE2618.
DR   KEGG; tte:TTE2618; -.
DR   eggNOG; COG0083; Bacteria.
DR   HOGENOM; CLU_041243_0_2_9; -.
DR   OMA; CANRIPH; -.
DR   OrthoDB; 610857at2; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000000555; 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..312
FT                   /note="Homoserine kinase"
FT                   /id="PRO_0000156627"
FT   BINDING         94..104
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ   SEQUENCE   312 AA;  34212 MW;  5DBDE5FB490F8F7E CRC64;
     MDSDMSGGMV KVMVPASTAN LGPGFDVLGV ALNLYTEISM EFIKDGLEIF VEGEGVEDIE
     NDQNNLIYKS AEVIFKKIGV FNKGLRIKIK NEIPLGRGLG SSAAAIVGGL LAANELTGRV
     LKREEILNLA ALIEGHADNV TAALNGGLNV SIFDKNKVYY ARKALEDDID FLAFVPQEMV
     RTEIARKVLP EKVDFNDAVF NTGRTAFLVS VLIEKKYELL KIATQDMLHQ KYRAKLVPFM
     EECFEKALLA GAYAAFLSGA GPTIMAISSP ENSERVLKEV GKVYEERGLS YRAYRLKCEN
     NGAQVLKTPS FV
 
 
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