KHSE_BUCBP
ID KHSE_BUCBP Reviewed; 310 AA.
AC P59568;
DT 11-APR-2003, integrated into UniProtKB/Swiss-Prot.
DT 11-APR-2003, sequence version 1.
DT 03-AUG-2022, entry version 115.
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=bbp_182;
OS Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC Erwiniaceae; Buchnera.
OX NCBI_TaxID=224915;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Bp;
RX PubMed=12522265; DOI=10.1073/pnas.0235981100;
RA van Ham R.C.H.J., Kamerbeek J., Palacios C., Rausell C., Abascal F.,
RA Bastolla U., Fernandez J.M., Jimenez L., Postigo M., Silva F.J.,
RA Tamames J., Viguera E., Latorre A., Valencia A., Moran F., Moya A.;
RT "Reductive genome evolution in Buchnera aphidicola.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:581-586(2003).
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; AE016826; AAO26914.1; -; Genomic_DNA.
DR RefSeq; WP_011091315.1; NC_004545.1.
DR AlphaFoldDB; P59568; -.
DR SMR; P59568; -.
DR STRING; 224915.bbp_182; -.
DR EnsemblBacteria; AAO26914; AAO26914; bbp_182.
DR GeneID; 56470724; -.
DR KEGG; bab:bbp_182; -.
DR eggNOG; COG0083; Bacteria.
DR HOGENOM; CLU_041243_1_1_6; -.
DR OMA; CANRIPH; -.
DR OrthoDB; 610857at2; -.
DR UniPathway; UPA00050; UER00064.
DR Proteomes; UP000000601; 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..310
FT /note="Homoserine kinase"
FT /id="PRO_0000156557"
FT BINDING 91..101
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ SEQUENCE 310 AA; 33953 MW; D5650D9729131EAA CRC64;
MIKIYAPASI GNVGVGFDVL GAAISPIDNS LLGDVITITS SKQFSLTSTG TFSNQLPKDI
NKNIVKKCWT YFCKILKKNL PVSITLEKNM PIGSGLGSSA CSIVATVVAI NTFFNKPINN
FELLKLMGKL EGKISGSVHY DNVAPSYLGG MQLIINKNDI VCQKISIFKN WLWVIAWPGI
SISTEQARTL LPLQYSKKVC IQHSQNLAGF IHATYTHQSK LASMFMHDII AEPYRIKLLP
YFLKTKQIII DMGAIACGIS GSGPAIFAVS DNLLTAKKIA TWLTNYYLTN DRGFVHICKI
DTIGARKIGL