KHSE_PROMA
ID KHSE_PROMA Reviewed; 315 AA.
AC Q7VBM6;
DT 15-FEB-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2003, sequence version 1.
DT 03-AUG-2022, entry version 103.
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=Pro_1066;
OS Prochlorococcus marinus (strain SARG / CCMP1375 / SS120).
OC Bacteria; Cyanobacteria; Synechococcales; Prochlorococcaceae;
OC Prochlorococcus.
OX NCBI_TaxID=167539;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SARG / CCMP1375 / SS120;
RX PubMed=12917486; DOI=10.1073/pnas.1733211100;
RA Dufresne A., Salanoubat M., Partensky F., Artiguenave F., Axmann I.M.,
RA Barbe V., Duprat S., Galperin M.Y., Koonin E.V., Le Gall F., Makarova K.S.,
RA Ostrowski M., Oztas S., Robert C., Rogozin I.B., Scanlan D.J.,
RA Tandeau de Marsac N., Weissenbach J., Wincker P., Wolf Y.I., Hess W.R.;
RT "Genome sequence of the cyanobacterium Prochlorococcus marinus SS120, a
RT nearly minimal oxyphototrophic genome.";
RL Proc. Natl. Acad. Sci. U.S.A. 100:10020-10025(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; AE017126; AAQ00111.1; -; Genomic_DNA.
DR RefSeq; NP_875458.1; NC_005042.1.
DR RefSeq; WP_011125218.1; NC_005042.1.
DR AlphaFoldDB; Q7VBM6; -.
DR SMR; Q7VBM6; -.
DR STRING; 167539.Pro_1066; -.
DR EnsemblBacteria; AAQ00111; AAQ00111; Pro_1066.
DR GeneID; 54200408; -.
DR KEGG; pma:Pro_1066; -.
DR PATRIC; fig|167539.5.peg.1116; -.
DR eggNOG; COG0083; Bacteria.
DR HOGENOM; CLU_041243_0_2_3; -.
DR OMA; CANRIPH; -.
DR OrthoDB; 610857at2; -.
DR UniPathway; UPA00050; UER00064.
DR Proteomes; UP000001420; 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..315
FT /note="Homoserine kinase"
FT /id="PRO_0000156597"
FT BINDING 97..107
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ SEQUENCE 315 AA; 33707 MW; 6D023924F5CF13CA CRC64;
MIQPPIGKKV LVEVPSTTAN LGPGFDCLGA ALSLTNFFTI KRIDGDSERF ELIMESTEGN
HLRGGPENLF YRAAQRVWKA AEVEPFALEA RVKLAVPPAR GLGSSATAIV AGLVGANALI
NDPLSKEKLL ELAIDIEGHP DNVVPSLLGG LCFTAKAASQ RWRVVKCDWD DSIKAVVAIP
SLRLSTSEAR RVMPKTVPLG DAVMNLGSLT LLLNGLRTGR QDLITDGMHD RLHEPYRWKL
IKGGAQVCEA AINAGAFGCA ISGAGPSILA LCKEDKGRNI SQAMVKAWES EGVASRAPLL
NLQTKGSTWY SNQSK
