| myo-inositol-1-phosphate synthase | <enzyme> An enzyme that catalyses the formation of myo-inositol-1-phosphate from glucose-6-phosphate in the presence of NAD. Chemical name: 1L-myo-Inositol-1-phosphate lyase (isomerizing) Registry number: EC 5.5.1.4 (12 Dec 1998) |
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| myo-inositol-trisphosphate 3-kinase | <enzyme> Converts inositol triphosphate to 1,3,4,5-tetrakisphosphate Registry number: EC 2.7.1.127 Synonym: inositol 1,4,5-triphosphate kinase, 1,4,5-intp kinase, inositol(1,4,5)p3 3-kinase, myo-inositol 1,4,5-triphosphate-3-kinase, inositol 1,4,5-trisphosphate kinase (26 Jun 1999) |
| myo-inositol-trisphosphate 6-kinase | <enzyme> Forms inositol 1,3,4,6-tetrakisphosphate and inositol 1,3,4,5-tetrakisphosphate in a ratio of 5:1 Registry number: EC 2.7.1.133 Synonym: inositol 1,3,4-p3 kinase, ins 1,3,4-p3 kinase, myo-inositol 1,3,4-tris phosphate 6-kinase, inositol-1,3,4-trisphosphate 5,6-kinase, inositol-trisphosphate 6-kinase (26 Jun 1999) |
| cyclic inositol phosphate | 1, 2 cyclic derivatives of inositol phosphatide that are invariably formed during enzymic hydrolysis of phosphatidyl inositol species. Have been proposed as second messengers in hormone activated pathways. (18 Nov 1997) |
| D-myo-inositol-3-phosphate synthase | <enzyme> Catalyses conversion of d-glucose-6-phosphate to d-myo-inositol-3-phosphate Registry number: EC 5.5.1.- Synonym: inositol-3-phosphate synthase, ins3p synthase (26 Jun 1999) |
| inositol | A cyclic hexahydric alcohol with 6 possible isomers. The biologically active form is myo inositol. (18 Nov 1997) |
| inositol 1,2,3,4,6-pentakisphosphate-2-phoshomonoesterase | <enzyme> Metabolises ins(1,2,3,4,6)p5 to ins(1,3,4,6)p4 Registry number: EC 3.1.3.- Synonym: 1,2,3,4,5-insp5-2-p monoesterase (26 Jun 1999) |
| inositol 1,3,4,5-tetrakisphosphate phosphomonoesterase | <enzyme> Rat liver enzyme forms inositol 1,3,4-triphosphate Registry number: EC 3.1.3.- Synonym: inositol tetrakisphosphate phosphomonoesterase, ins(1,3,4,5)p4 phosphomonoesterase, ins(1,3,4,5)p4 5-phosphatase, 1,4,5-triphosphate-1,2,4,5-tetrakisphosphate 5-phosphatase, inositol 1,3,4,5-polyphosphate 5-phosphatase (26 Jun 1999) |
| inositol 1,3,4-trisphosphate 5-6 kinase | <enzyme> Consider also EC 2.7.1.133 or EC 2.7.1.139 Registry number: EC 2.7.1.- Synonym: ins(1,3,4)p3 5-6 kinase (26 Jun 1999) |
| inositol 1,4,5-trisphosphate | <chemical> Intracellular messenger formed by the action of phospholipase c on phosphatidylinositol 4,5-bisphosphate, which is one of the phospholipids that make up the cell membrane. Inositol 1,4,5-trisphosphate is released into the cytoplasm where it releases calcium ions from internal stores within the cell's endoplasmic reticulum. These calcium ions stimulate the activity of b kinase or calmodulin. Chemical name: D-myo-Inositol, 1,4,5-tris(dihydrogen phosphate) (12 Dec 1998) |
| inositol-1,4-bisphosphate 4-phosphohydrolase | <enzyme> Soluble rat brain enzyme highly specific for inositol 1,4-bisphosphate; does not act on inositol 1-phosphate or inositol 1,4,5-trisphosphate Registry number: EC 3.1.3.- Synonym: ibp 4-phosphohydrolase (26 Jun 1999) |
| inositol 1-alpha-galactosyltransferase | <enzyme> Catalyses conversion of udpgalactose plus myo-inositol to galactinol plus udp Registry number: EC 2.4.1.123 Synonym: galactinol synthase (26 Jun 1999) |
| inositol 3 kinase | <enzyme> See phosphatidyl inositol 3 kinase. (18 Nov 1997) |
| inositol cyclic 1,2-phosphate 1-phosphodiesterase | <enzyme> Converts inositol 1:2-cyclic phosphate to inositol 2-phosphate; do not confuse with inositol 1,2 cyclic-phosphate 2-phosphohydrolase see annexin III Registry number: EC 3.1.4.- Synonym: cins(1,2)p hydrolase II (26 Jun 1999) |
| inositol hexakisphosphate kinase | <enzyme> 54-kD enzyme that catalyses formation of diphosphoinositol pentakisphosphate (pp-ip5) from inositol hexakisphosphate; the reverse reaction acts as an ATP synthase Registry number: EC 2.7.4.- Synonym: ip(6) kinase (26 Jun 1999) |