ID   KHSE_BURTA              Reviewed;         331 AA.
AC   Q2T7P9;
DT   11-SEP-2007, integrated into UniProtKB/Swiss-Prot.
DT   24-JAN-2006, sequence version 1.
DT   04-NOV-2026, entry version 111.
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};
GN   OrderedLocusNames=BTH_II0600;
OS   Burkholderia thailandensis (strain ATCC 700388 / DSM 13276 / CCUG 48851 /
OS   CIP 106301 / E264).
OC   Bacteria; Pseudomonadati; Pseudomonadota; Betaproteobacteria;
OC   Burkholderiales; Burkholderiaceae; Burkholderia; pseudomallei group.
OX   NCBI_TaxID=271848;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700388 / DSM 13276 / CCUG 48851 / CIP 106301 / E264;
RX   PubMed=16336651; DOI=10.1186/1471-2164-6-174;
RA   Kim H.S., Schell M.A., Yu Y., Ulrich R.L., Sarria S.H., Nierman W.C.,
RA   DeShazer D.;
RT   "Bacterial genome adaptation to niches: divergence of the potential
RT   virulence genes in three Burkholderia species of different survival
RT   strategies.";
RL   BMC Genomics 6:174-174(2005).
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=L-homoserine + ATP = O-phospho-L-homoserine + ADP + H(+);
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; CP000085; ABC34066.1; -; Genomic_DNA.
DR   RefSeq; WP_009895710.1; NC_007650.1.
DR   AlphaFoldDB; Q2T7P9; -.
DR   SMR; Q2T7P9; -.
DR   GeneID; 45118092; -.
DR   KEGG; bte:BTH_II0600; -.
DR   HOGENOM; CLU_053300_0_0_4; -.
DR   OMA; AACRFWS; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000001930; Chromosome II.
DR   GO; GO:0004413; F:homoserine kinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0009088; P:L-threonine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd05153; HomoserineK_II; 1.
DR   Gene3D; 3.90.1200.10; -; 1.
DR   Gene3D; 3.30.200.20; Phosphorylase Kinase, domain 1; 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   InterPro; IPR050249; Pseudomonas-type_ThrB.
DR   NCBIfam; NF003558; PRK05231.1; 1.
DR   NCBIfam; TIGR00938; thrB_alt; 1.
DR   PANTHER; PTHR21064:SF6; AMINOGLYCOSIDE PHOSPHOTRANSFERASE DOMAIN-CONTAINING PROTEIN; 1.
DR   PANTHER; PTHR21064; AMINOGLYCOSIDE PHOSPHOTRANSFERASE DOMAIN-CONTAINING PROTEIN-RELATED; 1.
DR   Pfam; PF01636; APH; 1.
DR   SUPFAM; SSF56112; Protein kinase-like (PK-like); 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Kinase; Nucleotide-binding;
KW   Reference proteome; Threonine biosynthesis; Transferase.
FT   CHAIN           1..331
FT                   /note="Homoserine kinase"
FT                   /id="PRO_0000300790"
SQ   SEQUENCE   331 AA;  36702 MW;  9644DE0A2AD7F63E CRC64;
     MAVFTAVSDA DLALWMRHYD LGDVVAFRGI PSGIENSNFF LTTTHGEYVL TIFENLTAGQ
     LPFYIDLMSH LAKHGVPVPA PVARDDGTLF GELHGKPAAI VTKLEGAAEL APGIEHCVEV
     GQMLARMHLA GRDYPQHQPN LRSLPWWRDA VPAIVPFITG EQRALLEGEL AHQAAFFASD
     DYAALPEGPC HCDLFRDNAL FAHAAPDTGH SVRLGGFFDF YFAGCDKWLF DVAVTVNDWC
     VDLSTGALDA GRADALLRAY QTVRPFTTGE RRHWGDMLRA GAYRFWVSRL YDFHLPRAAQ
     MLKPHDPGHF ERILRERIAH AGALPETHAC N
//