KHSE_CHLPB
ID KHSE_CHLPB Reviewed; 320 AA.
AC B3EL38;
DT 14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT 22-JUL-2008, sequence version 1.
DT 03-AUG-2022, entry version 79.
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};
GN OrderedLocusNames=Cphamn1_0296;
OS Chlorobium phaeobacteroides (strain BS1).
OC Bacteria; Chlorobi; Chlorobia; Chlorobiales; Chlorobiaceae;
OC Chlorobium/Pelodictyon group; Chlorobium.
OX NCBI_TaxID=331678;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BS1;
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Bruce D., Goodwin L., Pitluck S., Schmutz J., Larimer F., Land M.,
RA Hauser L., Kyrpides N., Ovchinnikova G., Li T., Liu Z., Zhao F.,
RA Overmann J., Bryant D.A., Richardson P.;
RT "Complete sequence of Chlorobium phaeobacteroides BS1.";
RL Submitted (JUN-2008) to the EMBL/GenBank/DDBJ databases.
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; CP001101; ACE03265.1; -; Genomic_DNA.
DR RefSeq; WP_012473756.1; NC_010831.1.
DR AlphaFoldDB; B3EL38; -.
DR SMR; B3EL38; -.
DR STRING; 331678.Cphamn1_0296; -.
DR PRIDE; B3EL38; -.
DR KEGG; cpb:Cphamn1_0296; -.
DR eggNOG; COG0083; Bacteria.
DR HOGENOM; CLU_041243_1_1_10; -.
DR OMA; CANRIPH; -.
DR OrthoDB; 610857at2; -.
DR UniPathway; UPA00050; UER00064.
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; Threonine biosynthesis; Transferase.
FT CHAIN 1..320
FT /note="Homoserine kinase"
FT /id="PRO_1000122408"
FT BINDING 100..110
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00384"
SQ SEQUENCE 320 AA; 33840 MW; 65ABD9B94CBA763E CRC64;
MKTVTGFASA TIGNVACGFD VLGFAITEPG DEVILTLREE RSGELPVSIT SITGDGGALP
RNPKKNTSSF VVLKFLEYIR TNKGIDFEGH IELELKKNLP LSSGMGSSAA SAAAALVAAN
ELMGRPCNKM ELVNFAIEGE RVACGSAHAD NAAPAMLGNF VLIRSYNPID LITIPSPDNL
YCTLVHPHIE VRTAYARSVL PRMISLKTAT EQWGNVGALI SGLLTSDYEL IGRSLVDVIA
EPKRAPLIPG FYDVKHAALE AGAIGCSIAG SGPSIFAFSS SPETASRVGE AMQTAFSTLK
EKLQSDIWIS PVCKQGAKVI