ID A0AQQ6_HORVU Unreviewed; 347 AA.
AC A0AQQ6;
DT 28-NOV-2006, integrated into UniProtKB/TrEMBL.
DT 28-NOV-2006, sequence version 1.
DT 27-MAR-2024, entry version 65.
DE RecName: Full=Inositol-tetrakisphosphate 1-kinase {ECO:0000256|PIRNR:PIRNR038186};
DE EC=2.7.1.134 {ECO:0000256|PIRNR:PIRNR038186};
GN Name=ipk {ECO:0000313|EMBL:CAL49035.1};
OS Hordeum vulgare (Barley).
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC Pooideae; Triticodae; Triticeae; Hordeinae; Hordeum.
OX NCBI_TaxID=4513 {ECO:0000313|EMBL:CAL49035.1};
RN [1] {ECO:0000313|EMBL:CAL49035.1}
RP NUCLEOTIDE SEQUENCE.
RX PubMed=17531407; DOI=10.1016/j.gene.2007.04.018;
RA Josefsen L., Bohn L., Sorensen M.B., Rasmussen S.K.;
RT "Characterization of a multifunctional inositol phosphate kinase from rice
RT and barley belonging to the ATP-grasp superfamily.";
RL Gene 397:114-125(2007).
CC -!- FUNCTION: Kinase that can phosphorylate various inositol polyphosphate
CC such as Ins(3,4,5,6)P4 or Ins(1,3,4)P3.
CC {ECO:0000256|PIRNR:PIRNR038186}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=1D-myo-inositol 1,3,4-trisphosphate + ATP = 1D-myo-inositol
CC 1,3,4,5-tetrakisphosphate + ADP + H(+); Xref=Rhea:RHEA:13253,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:57895,
CC ChEBI:CHEBI:58414, ChEBI:CHEBI:456216; EC=2.7.1.159;
CC Evidence={ECO:0000256|ARBA:ARBA00000680};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=1D-myo-inositol 1,3,4-trisphosphate + ATP = 1D-myo-inositol
CC 1,3,4,6-tetrakisphosphate + ADP + H(+); Xref=Rhea:RHEA:20940,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:57660,
CC ChEBI:CHEBI:58414, ChEBI:CHEBI:456216; EC=2.7.1.159;
CC Evidence={ECO:0000256|ARBA:ARBA00000399};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=1D-myo-inositol 3,4,5,6-tetrakisphosphate + ATP = 1D-myo-
CC inositol 1,3,4,5,6-pentakisphosphate + ADP + H(+);
CC Xref=Rhea:RHEA:12452, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:57539, ChEBI:CHEBI:57733, ChEBI:CHEBI:456216;
CC EC=2.7.1.134; Evidence={ECO:0000256|ARBA:ARBA00000084,
CC ECO:0000256|PIRNR:PIRNR038186};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|PIRNR:PIRNR038186,
CC ECO:0000256|PIRSR:PIRSR038186-2};
CC Note=Binds 2 magnesium ions per subunit.
CC {ECO:0000256|PIRNR:PIRNR038186, ECO:0000256|PIRSR:PIRSR038186-2};
CC -!- SUBUNIT: Monomer. {ECO:0000256|ARBA:ARBA00011245,
CC ECO:0000256|PIRNR:PIRNR038186}.
CC -!- SIMILARITY: Belongs to the ITPK1 family.
CC {ECO:0000256|ARBA:ARBA00009601, ECO:0000256|PIRNR:PIRNR038186}.
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DR EMBL; AM404177; CAL49035.1; -; Genomic_DNA.
DR AlphaFoldDB; A0AQQ6; -.
DR SMR; A0AQQ6; -.
DR ExpressionAtlas; A0AQQ6; baseline and differential.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0047325; F:inositol tetrakisphosphate 1-kinase activity; IEA:UniProtKB-EC.
DR GO; GO:0052726; F:inositol-1,3,4-trisphosphate 5-kinase activity; IEA:UniProtKB-EC.
DR GO; GO:0052725; F:inositol-1,3,4-trisphosphate 6-kinase activity; IEA:UniProtKB-EC.
DR GO; GO:0000287; F:magnesium ion binding; IEA:InterPro.
DR GO; GO:0032957; P:inositol trisphosphate metabolic process; IEA:InterPro.
DR GO; GO:0016310; P:phosphorylation; IEA:UniProtKB-KW.
DR Gene3D; 3.30.470.20; ATP-grasp fold, B domain; 1.
DR InterPro; IPR008656; Inositol_tetrakis-P_1-kinase.
DR InterPro; IPR040464; InsP(3)kin_ATP-grasp.
DR InterPro; IPR041429; ITPK1_N.
DR PANTHER; PTHR14217; INOSITOL-TETRAKISPHOSPHATE 1-KINASE; 1.
DR PANTHER; PTHR14217:SF24; INOSITOL-TETRAKISPHOSPHATE 1-KINASE 5; 1.
DR Pfam; PF05770; Ins134_P3_kin; 1.
DR Pfam; PF17927; Ins134_P3_kin_N; 1.
DR PIRSF; PIRSF038186; ITPK; 1.
DR SUPFAM; SSF56059; Glutathione synthetase ATP-binding domain-like; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|PIRNR:PIRNR038186};
KW Kinase {ECO:0000256|ARBA:ARBA00022777, ECO:0000256|PIRNR:PIRNR038186};
KW Magnesium {ECO:0000256|PIRNR:PIRNR038186, ECO:0000256|PIRSR:PIRSR038186-2};
KW Metal-binding {ECO:0000256|ARBA:ARBA00022723,
KW ECO:0000256|PIRNR:PIRNR038186};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741,
KW ECO:0000256|PIRNR:PIRNR038186};
KW Transferase {ECO:0000256|ARBA:ARBA00022679, ECO:0000256|PIRNR:PIRNR038186}.
FT DOMAIN 20..99
FT /note="Inositol-tetrakisphosphate 1-kinase N-terminal"
FT /evidence="ECO:0000259|Pfam:PF17927"
FT DOMAIN 124..325
FT /note="Inositol 1,3,4-trisphosphate 5/6-kinase ATP-grasp"
FT /evidence="ECO:0000259|Pfam:PF05770"
FT BINDING 29
FT /ligand="1D-myo-inositol 1,3,4-trisphosphate"
FT /ligand_id="ChEBI:CHEBI:58414"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 70
FT /ligand="1D-myo-inositol 1,3,4-trisphosphate"
FT /ligand_id="ChEBI:CHEBI:58414"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 105
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 158
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 169
FT /ligand="1D-myo-inositol 1,3,4-trisphosphate"
FT /ligand_id="ChEBI:CHEBI:58414"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 190..201
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 201
FT /ligand="1D-myo-inositol 1,3,4-trisphosphate"
FT /ligand_id="ChEBI:CHEBI:58414"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 216
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 287
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-2"
FT BINDING 302
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-2"
FT BINDING 302
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-2"
FT BINDING 304
FT /ligand="1D-myo-inositol 1,3,4-trisphosphate"
FT /ligand_id="ChEBI:CHEBI:58414"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
FT BINDING 304
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-2"
FT BINDING 308
FT /ligand="1D-myo-inositol 1,3,4-trisphosphate"
FT /ligand_id="ChEBI:CHEBI:58414"
FT /evidence="ECO:0000256|PIRSR:PIRSR038186-1"
SQ SEQUENCE 347 AA; 38303 MW; C71504E19B1860AA CRC64;
MAAAAAAAAE ASSADSRRYV VGYALAPKKQ NSFIKPSLIS RAAARGVDLV PVDDARPLAD
QGPFDLVIHK LYGHDWRAQL QAFSARYPSV PVVDPPHAID RLHNRISMLQ VVSELDVPPG
DADRRDTFGI PSQVVVYDAA ALADSGLLAA LRFPLIAKPL VADGSAKSHK MSLVYHREGL
RKLRPPLVLQ EFVNHGGVIF KVYVVGGHVT CVKRHSLPDV SKEILEDAAA EGTISFSQVS
NLPNQRTAEE YYEDMRLEDA VMPPTDFVNE IAGGLRRALG LQLFNFDMIR DVRAGDRYLV
IDINYFPGYA KMPGYEIVLT DFFWDMVHKD DVALKEEEEQ SNHAVVK
//
