ID   KHSE_AGRVS              Reviewed;         321 AA.
AC   B9JT39;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 67.
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}; OrderedLocusNames=Avi_1059;
OS   Agrobacterium vitis (strain S4 / ATCC BAA-846) (Rhizobium vitis (strain
OS   S4)).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Hyphomicrobiales;
OC   Rhizobiaceae; Rhizobium/Agrobacterium group; Agrobacterium.
OX   NCBI_TaxID=311402;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=S4 / ATCC BAA-846;
RX   PubMed=19251847; DOI=10.1128/jb.01779-08;
RA   Slater S.C., Goldman B.S., Goodner B., Setubal J.C., Farrand S.K.,
RA   Nester E.W., Burr T.J., Banta L., Dickerman A.W., Paulsen I., Otten L.,
RA   Suen G., Welch R., Almeida N.F., Arnold F., Burton O.T., Du Z., Ewing A.,
RA   Godsy E., Heisel S., Houmiel K.L., Jhaveri J., Lu J., Miller N.M.,
RA   Norton S., Chen Q., Phoolcharoen W., Ohlin V., Ondrusek D., Pride N.,
RA   Stricklin S.L., Sun J., Wheeler C., Wilson L., Zhu H., Wood D.W.;
RT   "Genome sequences of three Agrobacterium biovars help elucidate the
RT   evolution of multichromosome genomes in bacteria.";
RL   J. Bacteriol. 191:2501-2511(2009).
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_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; CP000633; ACM35752.1; -; Genomic_DNA.
DR   RefSeq; WP_015915176.1; NC_011989.1.
DR   AlphaFoldDB; B9JT39; -.
DR   SMR; B9JT39; -.
DR   STRING; 311402.Avi_1059; -.
DR   EnsemblBacteria; ACM35752; ACM35752; Avi_1059.
DR   KEGG; avi:Avi_1059; -.
DR   eggNOG; COG2334; Bacteria.
DR   HOGENOM; CLU_053300_1_0_5; -.
DR   OMA; DPTHFER; -.
DR   OrthoDB; 1003984at2; -.
DR   UniPathway; UPA00050; UER00064.
DR   Proteomes; UP000001596; Chromosome 1.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
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   CDD; cd05153; HomoserineK_II; 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   Pfam; PF01636; APH; 1.
DR   SUPFAM; SSF56112; SSF56112; 1.
DR   TIGRFAMs; TIGR00938; thrB_alt; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; ATP-binding; Kinase; Nucleotide-binding;
KW   Reference proteome; Threonine biosynthesis; Transferase.
FT   CHAIN           1..321
FT                   /note="Homoserine kinase"
FT                   /id="PRO_1000196942"
SQ   SEQUENCE   321 AA;  35684 MW;  4058C3927FE6912F CRC64;
     MAVYTDINEV DLKDFLAHYD TGELLSFKGI AEGVENSNFL LHTTKGALIL TLYEKRVEKD
     DLPFFLGLMH HLSAKGLNCP LPLPRKDGAL LGELSGRPAA LISFLEGMWL RKPETQHCRA
     VGEALATMHL AAEGFALRRD NALDLAGWQA LWPKARARAD EVSPGLKAEI DAELVHLAGQ
     WPKDLPAGVI HADLFPDNVF FLGDQLSGLI DFYFACNDFL AYDLSICLNA WCFEKDGSYN
     ITKGKAMIDG YLAVRSLSPA EVAAMPVLCR GSALRFLLTR LYDWLTTPEG AMVVKKEPLE
     YLRKLRFHQA VETAAEYGWP Q