ID K9TIQ1_9CYAN Unreviewed; 335 AA.
AC K9TIQ1;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 24-JAN-2024, entry version 56.
DE RecName: Full=Homoserine kinase {ECO:0000256|ARBA:ARBA00017858, 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|ARBA:ARBA00012078, ECO:0000256|HAMAP-Rule:MF_00384};
GN Name=thrB {ECO:0000256|HAMAP-Rule:MF_00384};
GN ORFNames=Oscil6304_2260 {ECO:0000313|EMBL:AFY81894.1};
OS Oscillatoria acuminata PCC 6304.
OC Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC Oscillatoriales; Oscillatoriaceae; Oscillatoria.
OX NCBI_TaxID=56110 {ECO:0000313|EMBL:AFY81894.1, ECO:0000313|Proteomes:UP000010367};
RN [1] {ECO:0000313|EMBL:AFY81894.1, ECO:0000313|Proteomes:UP000010367}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 6304 {ECO:0000313|EMBL:AFY81894.1,
RC ECO:0000313|Proteomes:UP000010367};
RG US DOE Joint Genome Institute;
RA Gugger M., Coursin T., Rippka R., Tandeau De Marsac N., Huntemann M.,
RA Wei C.-L., Han J., Detter J.C., Han C., Tapia R., Davenport K.,
RA Daligault H., Erkkila T., Gu W., Munk A.C.C., Teshima H., Xu Y., Chain P.,
RA Chen A., Krypides N., Mavromatis K., Markowitz V., Szeto E., Ivanova N.,
RA Mikhailova N., Ovchinnikova G., Pagani I., Pati A., Goodwin L., Peters L.,
RA Pitluck S., Woyke T., Kerfeld C.;
RT "Finished chromosome of genome of Oscillatoria acuminata PCC 6304.";
RL Submitted (JUN-2012) 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|ARBA:ARBA00000528,
CC 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|ARBA:ARBA00005015,
CC 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|ARBA:ARBA00007370, ECO:0000256|HAMAP-
CC Rule:MF_00384}.
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DR EMBL; CP003607; AFY81894.1; -; Genomic_DNA.
DR RefSeq; WP_015148536.1; NC_019693.1.
DR AlphaFoldDB; K9TIQ1; -.
DR STRING; 56110.Oscil6304_2260; -.
DR KEGG; oac:Oscil6304_2260; -.
DR PATRIC; fig|56110.3.peg.2679; -.
DR eggNOG; COG0083; Bacteria.
DR HOGENOM; CLU_041243_0_2_3; -.
DR InParanoid; K9TIQ1; -.
DR OrthoDB; 9769912at2; -.
DR UniPathway; UPA00050; UER00064.
DR Proteomes; UP000010367; 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; 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; IPR006203; GHMP_knse_ATP-bd_CS.
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.
DR PROSITE; PS00627; GHMP_KINASES_ATP; 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}; Reference proteome {ECO:0000313|Proteomes:UP000010367};
KW Threonine biosynthesis {ECO:0000256|ARBA:ARBA00022697, ECO:0000256|HAMAP-
KW Rule:MF_00384};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|HAMAP-
KW Rule:MF_00384}.
FT DOMAIN 92..153
FT /note="GHMP kinase N-terminal"
FT /evidence="ECO:0000259|Pfam:PF00288"
FT DOMAIN 223..297
FT /note="GHMP kinase C-terminal"
FT /evidence="ECO:0000259|Pfam:PF08544"
FT BINDING 100..110
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00384"
SQ SEQUENCE 335 AA; 35264 MW; 6E63AA86C931786B CRC64;
MSSTHSTVTV TVPATTANLG PGFDCFGAAL TLYNQFKFSA IALNPSTPDQ KTLQILVKGL
EADRVIADET NLVYKAFAKF YAHLGQSPPP VEIEIELGVP LARGLGSSAT AIAGGLMGAN
HLAGKPLTLL QLVDLAIDME KHPDNVVPAL LGGCRLAASI PEELATDGPG WEICDVPWHS
EIVPVVAIPE FELSTETARQ VLPTHYTRAD AIYNTAHLGL LLRGLATNNG QWLRVAMSDR
LHQPYRKNLI PGYDAVHAAA LNAGAYGLTI SGAGPTLLAL SSPAQSADVA TAMVEAWQKA
GIKSHAQSVQ IDLRGSVSVE AKSPLKQPAN FSTPG
//
