KHSE_AQUAE
ID KHSE_AQUAE Reviewed; 297 AA.
AC O67332;
DT 30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT 01-AUG-1998, sequence version 1.
DT 03-AUG-2022, entry version 126.
DE RecName: Full=Homoserine kinase;
DE Short=HK;
DE Short=HSK;
DE EC=2.7.1.39;
GN Name=thrB; OrderedLocusNames=aq_1309;
OS Aquifex aeolicus (strain VF5).
OC Bacteria; Aquificae; Aquificales; Aquificaceae; Aquifex.
OX NCBI_TaxID=224324;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=VF5;
RX PubMed=9537320; DOI=10.1038/32831;
RA Deckert G., Warren P.V., Gaasterland T., Young W.G., Lenox A.L.,
RA Graham D.E., Overbeek R., Snead M.A., Keller M., Aujay M., Huber R.,
RA Feldman R.A., Short J.M., Olsen G.J., Swanson R.V.;
RT "The complete genome of the hyperthermophilic bacterium Aquifex aeolicus.";
RL Nature 392:353-358(1998).
CC -!- FUNCTION: Catalyzes the ATP-dependent phosphorylation of L-homoserine
CC to L-homoserine phosphate. {ECO:0000250}.
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;
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 4/5.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000305}.
CC -!- SIMILARITY: Belongs to the GHMP kinase family. Homoserine kinase
CC subfamily. {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; AE000657; AAC07283.1; -; Genomic_DNA.
DR PIR; A70413; A70413.
DR RefSeq; NP_213896.1; NC_000918.1.
DR RefSeq; WP_010880834.1; NC_000918.1.
DR AlphaFoldDB; O67332; -.
DR SMR; O67332; -.
DR STRING; 224324.aq_1309; -.
DR EnsemblBacteria; AAC07283; AAC07283; aq_1309.
DR KEGG; aae:aq_1309; -.
DR PATRIC; fig|224324.8.peg.1020; -.
DR eggNOG; COG0083; Bacteria.
DR HOGENOM; CLU_041243_0_2_0; -.
DR InParanoid; O67332; -.
DR OMA; CANRIPH; -.
DR OrthoDB; 610857at2; -.
DR UniPathway; UPA00050; UER00064.
DR Proteomes; UP000000798; 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..297
FT /note="Homoserine kinase"
FT /id="PRO_0000156546"
FT BINDING 84..94
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255"
SQ SEQUENCE 297 AA; 32679 MW; 84A08FA3B881C3B5 CRC64;
MIKIEVPATT TNFGSGFDTF GLALSLTNTF SVDFSDKYEV QIEGYSSGIP KDQKNLFIKV
YKKTCQSIGK KPKPLKLIQE NRVPPARGLG SSATAIVGGI EAALALHKVE LPLKEKLKIA
FEFEKHPDNI IPAFVGGFTV CATSESGVIF KKLPFPEDIK IVFVIPDFEV STSEARRVLP
KKVELKEAVF NVQRSALFVS ALLTKDYKLL REAVRDKLHQ PYREKLVPGL SEAILVSYKE
GALATFLSGA GPTICSLTTE NEEKIGEAIR EVITKFSGYD AQVMVLKARN EGVKVYS
