ID A0A0T6A5Y7_9BACT Unreviewed; 303 AA.
AC A0A0T6A5Y7;
DT 17-FEB-2016, integrated into UniProtKB/TrEMBL.
DT 17-FEB-2016, sequence version 1.
DT 24-JAN-2024, entry version 26.
DE RecName: Full=Homoserine kinase {ECO:0000256|HAMAP-Rule:MF_00384};
DE Short=HK {ECO:0000256|HAMAP-Rule:MF_00384};
DE Short=HSK {ECO:0000256|HAMAP-Rule:MF_00384};
DE EC=2.7.1.39 {ECO:0000256|HAMAP-Rule:MF_00384};
GN Name=thrB {ECO:0000256|HAMAP-Rule:MF_00384,
GN ECO:0000313|EMBL:KRT70488.1};
GN ORFNames=XU15_C0004G0064 {ECO:0000313|EMBL:KRT70488.1};
OS candidate division NC10 bacterium CSP1-5.
OC Bacteria; candidate division NC10.
OX NCBI_TaxID=1640516 {ECO:0000313|EMBL:KRT70488.1, ECO:0000313|Proteomes:UP000051123};
RN [1] {ECO:0000313|EMBL:KRT70488.1, ECO:0000313|Proteomes:UP000051123}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CSP1-5 {ECO:0000313|EMBL:KRT70488.1};
RA Hug L.A., Thomas B.C., Sharon I., Brown C.T., Sharma R., Hettich R.L.,
RA Wilkins M.J., Williams K.H., Singh A., Banfield J.F.;
RT "Critical biogeochemical functions in the subsurface are associated with
RT bacteria from new phyla and little studied lineages.";
RL Submitted (MAY-2015) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the ATP-dependent phosphorylation of L-homoserine
CC to L-homoserine phosphate. {ECO:0000256|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:0000256|HAMAP-Rule:MF_00384};
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 4/5. {ECO:0000256|HAMAP-Rule:MF_00384}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00384}.
CC -!- SIMILARITY: Belongs to the GHMP kinase family. Homoserine kinase
CC subfamily. {ECO:0000256|HAMAP-Rule:MF_00384}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KRT70488.1}.
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; LDXR01000004; KRT70488.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A0T6A5Y7; -.
DR STRING; 1640516.XU15_C0004G0064; -.
DR PATRIC; fig|1640516.3.peg.720; -.
DR UniPathway; UPA00050; UER00064.
DR Proteomes; UP000051123; Unassembled WGS sequence.
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; GHMP kinase, C-terminal domain; 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; IPR000870; Homoserine_kinase.
DR InterPro; IPR020568; Ribosomal_Su5_D2-typ_SF.
DR InterPro; IPR014721; Ribsml_uS5_D2-typ_fold_subgr.
DR NCBIfam; TIGR00191; thrB; 1.
DR PANTHER; PTHR20861:SF1; HOMOSERINE KINASE; 1.
DR PANTHER; PTHR20861; HOMOSERINE/4-DIPHOSPHOCYTIDYL-2-C-METHYL-D-ERYTHRITOL KINASE; 1.
DR Pfam; PF08544; GHMP_kinases_C; 1.
DR Pfam; PF00288; GHMP_kinases_N; 1.
DR PIRSF; PIRSF000676; Homoser_kin; 1.
DR PRINTS; PR00958; HOMSERKINASE.
DR SUPFAM; SSF55060; GHMP Kinase, C-terminal domain; 1.
DR SUPFAM; SSF54211; Ribosomal protein S5 domain 2-like; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00384};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_00384}; Cytoplasm {ECO:0000256|HAMAP-Rule:MF_00384};
KW Kinase {ECO:0000256|ARBA:ARBA00022777, ECO:0000256|HAMAP-Rule:MF_00384};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00384};
KW Threonine biosynthesis {ECO:0000256|ARBA:ARBA00022697, ECO:0000256|HAMAP-
KW Rule:MF_00384};
KW Transferase {ECO:0000256|HAMAP-Rule:MF_00384, ECO:0000313|EMBL:KRT70488.1}.
FT DOMAIN 84..145
FT /note="GHMP kinase N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00288"
FT DOMAIN 207..281
FT /note="GHMP kinase C-terminal"
FT /evidence="ECO:0000259|Pfam:PF08544"
FT BINDING 92..102
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00384"
SQ SEQUENCE 303 AA; 31741 MW; 5F2BD18A6DEFE0B6 CRC64;
MSAGGRIRIR VPGSTANLGS GFDVLGLALG LYNTIEMEEI ARGVELTVEG EGADRLQRDV
ERSLVVRAAR AAFAHLGVTA PGLRIHLKNA IPLRRGLGSS GTACLGGVVG AAELVGRPLA
VADVLKLALP FEGHPDNITP SLVGGLTATC VSEGAVRYVK IPVPDTIRIV AVVPDRELST
AEARRALPQQ VPLTDAVYNV GRAAMLVGAL VAGDLGLLDE ATRDRLHQPY RAKLLPGMEE
VFEAGRRAGA LATFLSGAGS TVVALVEREA ETVGREMVEA WTARGIRAQA KVLTIDLEGV
RLS
//
