Rabbit anti-Human ITPK1 Polyclonal Antibody

Uniprot Id

Q13572

Target Species

Human

Target Name

ITPK1

Target Full Name

Inositol-tetrakisphosphate 1-kinase

Target Function

Kinase that can phosphorylate various inositol polyphosphate such as Ins(3,4,5,6)P4 or Ins(1,3,4)P3. Phosphorylates Ins(3,4,5,6)P4 at position 1 to form Ins(1,3,4,5,6)P5. This reaction is thought to have regulatory importance, since Ins(3,4,5,6)P4 is an inhibitor of plasma membrane Ca(2+)-activated Cl(-) channels, while Ins(1,3,4,5,6)P5 is not. Also phosphorylates Ins(1,3,4)P3 on O-5 and O-6 to form Ins(1,3,4,6)P4, an essential molecule in the hexakisphosphate (InsP6) pathway. Also acts as an inositol polyphosphate phosphatase that dephosphorylate Ins(1,3,4,5)P4 and Ins(1,3,4,6)P4 to Ins(1,3,4)P3, and Ins(1,3,4,5,6)P5 to Ins(3,4,5,6)P4. May also act as an isomerase that interconverts the inositol tetrakisphosphate isomers Ins(1,3,4,5)P4 and Ins(1,3,4,6)P4 in the presence of ADP and magnesium. Probably acts as the rate-limiting enzyme of the InsP6 pathway. Modifies TNF-alpha-induced apoptosis by interfering with the activation of TNFRSF1A-associated death domain. Plays an important role in MLKL-mediated necroptosis. Produces highly phosphorylated inositol phosphates such as inositolhexakisphosphate (InsP6) which bind to MLKL mediating the release of an N-terminal auto-inhibitory region leading to its activation. Essential for activated phospho-MLKL to oligomerize and localize to the cell membrane during necroptosis.

Target Protein Families

ITPK1 family

Target Tissue Specificity

Expressed in brain > heart > skeletal muscle = kidney = pancreas = liver = placenta > lung. In brain, it is expressed in cerebellum, cerebral cortex, medulla, spinal cord, occipital lobe, frontal lobe, temporal lobe and putamen.

Target Synonyms

3; 4)P(3) 5/6-kinase; 4-trisphosphate 5/6-kinase; Inositol 1 3 4 triphosphate 5/6 kinase; Inositol 1 3 4 trisphosphate 5/6 kinase; Inositol 1; Inositol tetrakisphosphate 1 kinase; Inositol triphosphate 5/6 kinase; Inositol-tetrakisphosphate 1-kinase; Inositol-triphosphate 5/6-kinase; Ins(1 3 4)P(3) 5/6 kinase; Ins(1; ITPK 1; itpk1; ITPK1_HUMAN; ITRPK 1; ITRPK1

Target Background

This gene encodes an enzyme that belongs to the inositol 1, 3, 4-trisphosphate 5/6-kinase family. This enzyme regulates the synthesis of inositol tetraphosphate, and downstream products, inositol pentakisphosphate and inositol hexakisphosphate. Inositol metabolism plays a role in the development of the neural tube. Disruptions in this gene are thought to be associated with neural tube defects. A pseudogene of this gene has been identified on chromosome X.