ID   GAL1_ECOHS              Reviewed;         382 AA.
AC   A7ZY13;
DT   05-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   23-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 82.
DE   RecName: Full=Galactokinase {ECO:0000255|HAMAP-Rule:MF_00246};
DE            EC=2.7.1.6 {ECO:0000255|HAMAP-Rule:MF_00246};
DE   AltName: Full=Galactose kinase {ECO:0000255|HAMAP-Rule:MF_00246};
GN   Name=galK {ECO:0000255|HAMAP-Rule:MF_00246}; OrderedLocusNames=EcHS_A0811;
OS   Escherichia coli O9:H4 (strain HS).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=331112;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HS;
RX   PubMed=18676672; DOI=10.1128/jb.00619-08;
RA   Rasko D.A., Rosovitz M.J., Myers G.S.A., Mongodin E.F., Fricke W.F.,
RA   Gajer P., Crabtree J., Sebaihia M., Thomson N.R., Chaudhuri R.,
RA   Henderson I.R., Sperandio V., Ravel J.;
RT   "The pangenome structure of Escherichia coli: comparative genomic analysis
RT   of E. coli commensal and pathogenic isolates.";
RL   J. Bacteriol. 190:6881-6893(2008).
CC   -!- FUNCTION: Catalyzes the transfer of the gamma-phosphate of ATP to D-
CC       galactose to form alpha-D-galactose-1-phosphate (Gal-1-P).
CC       {ECO:0000255|HAMAP-Rule:MF_00246}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=alpha-D-galactose + ATP = ADP + alpha-D-galactose 1-phosphate
CC         + H(+); Xref=Rhea:RHEA:13553, ChEBI:CHEBI:15378, ChEBI:CHEBI:28061,
CC         ChEBI:CHEBI:30616, ChEBI:CHEBI:58336, ChEBI:CHEBI:456216; EC=2.7.1.6;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00246};
CC   -!- PATHWAY: Carbohydrate metabolism; galactose metabolism.
CC       {ECO:0000255|HAMAP-Rule:MF_00246}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00246}.
CC   -!- SIMILARITY: Belongs to the GHMP kinase family. GalK subfamily.
CC       {ECO:0000255|HAMAP-Rule:MF_00246}.
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DR   EMBL; CP000802; ABV05167.1; -; Genomic_DNA.
DR   RefSeq; WP_000053420.1; NC_009800.1.
DR   AlphaFoldDB; A7ZY13; -.
DR   SMR; A7ZY13; -.
DR   KEGG; ecx:EcHS_A0811; -.
DR   HOGENOM; CLU_017814_2_1_6; -.
DR   OMA; PVCYNLR; -.
DR   UniPathway; UPA00214; -.
DR   Proteomes; UP000001123; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004335; F:galactokinase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006012; P:galactose metabolic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.230.10; -; 1.
DR   Gene3D; 3.30.70.890; -; 1.
DR   HAMAP; MF_00246; Galactokinase; 1.
DR   InterPro; IPR000705; Galactokinase.
DR   InterPro; IPR022963; Galactokinase_bac.
DR   InterPro; IPR019741; Galactokinase_CS.
DR   InterPro; IPR019539; GalKase_N.
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; IPR006206; Mevalonate/galactokinase.
DR   InterPro; IPR020568; Ribosomal_S5_D2-typ_fold.
DR   InterPro; IPR014721; Ribosomal_S5_D2-typ_fold_subgr.
DR   PANTHER; PTHR10457:SF6; PTHR10457:SF6; 1.
DR   Pfam; PF10509; GalKase_gal_bdg; 1.
DR   Pfam; PF08544; GHMP_kinases_C; 1.
DR   Pfam; PF00288; GHMP_kinases_N; 1.
DR   PIRSF; PIRSF000530; Galactokinase; 1.
DR   PRINTS; PR00473; GALCTOKINASE.
DR   SUPFAM; SSF54211; SSF54211; 1.
DR   SUPFAM; SSF55060; SSF55060; 1.
DR   TIGRFAMs; TIGR00131; gal_kin; 1.
DR   PROSITE; PS00106; GALACTOKINASE; 1.
DR   PROSITE; PS00627; GHMP_KINASES_ATP; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Carbohydrate metabolism; Cytoplasm; Galactose metabolism;
KW   Kinase; Magnesium; Metal-binding; Nucleotide-binding; Transferase.
FT   CHAIN           1..382
FT                   /note="Galactokinase"
FT                   /id="PRO_1000059003"
FT   ACT_SITE        174
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
FT   BINDING         34..37
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
FT   BINDING         124..130
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
FT   BINDING         130
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
FT   BINDING         162
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
FT   BINDING         223
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
FT   SITE            28
FT                   /note="Transition state stabilizer"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00246"
SQ   SEQUENCE   382 AA;  41472 MW;  6189ACF3A85DB1F5 CRC64;
     MSLKEKTQSL FANAFGYPAT HTIQAPGRVN LIGEHTDYND GFVLPCAIDY QTVISCAPRD
     DRKVRVMAAD YENQLDEFSL DAPIVAHENY QWANYVRGVV KHLQLRNNSF GGVDMVISGN
     VPQGAGLSSS ASLEVAVGTV LQQLYHLPLD GAQIALNGQE AENQFVGCNC GIMDQLISAL
     GKKDHALLID CRSLGTKAVS MPKGVAVVII NSNFKRTLVG SEYNTRREQC ETGARFFQQP
     ALRDVTIEEF NAVAHELDPI VAKRVRHILT ENARTVEAAS ALEQGDLKRM SELMAESHAS
     MRDDFEITVP QIDTLVEIVK AVIGDKGGVR MTGGGFGGCI VALIPEELVP AVQQAVAEQY
     EAKTGIKETF YVCKPSQGAG QC