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AB130021

Recombinant Human ITPK1 protein (His tag N-Terminus)

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Recombinant Human ITPK1 protein (His tag N-Terminus) is a Human Full Length protein, in the 1 to 414 aa range, expressed in Escherichia coli, with >95%, suitable for SDS-PAGE, Mass Spec.

View Alternative Names

Inositol-tetrakisphosphate 1-kinase, Inositol-triphosphate 5/6-kinase, ITPK1

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SDS-PAGE - Recombinant Human ITPK1 protein (His tag N-Terminus) (AB130021)
  • SDS-PAGE

Unknown

SDS-PAGE - Recombinant Human ITPK1 protein (His tag N-Terminus) (AB130021)

15% SDS-PAGE analysis of 3 μg ab130021.

Key facts

Purity

>95% SDS-PAGE

Expression system

Escherichia coli

Tags

His tag N-Terminus

Applications

Mass Spec, SDS-PAGE

applications

Biologically active

No

Accession

Q13572

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 8 Constituents: 10% Glycerol (glycerin, glycerine), 0.58% Sodium chloride, 0.32% Tris HCl, 0.03% EDTA

storage-buffer

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" }, "Mass Spec": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"sequence":"MGSSHHHHHHSSGLVPRGSHMGSHMQTFLKGKRVGYWLSEKKIKKLNFQAFAELCRKRGMEVVQLNLSRPIEEQGPLDVIIHKLTDVILEADQNDSQSLELVHRFQEYIDAHPETIVLDPLPAIRTLLDRSKSYELIRKIEAYMEDDRICSPPFMELTSLCGDDTMRLLEKNGLTFPFICKTRVAHGTNSHEMAIVFNQEGLNAIQPPCVVQNFINHNAVLYKVFVVGESYTVVQRPSLKNFSAGTSDRESIFFNSHNVSKPESSSVLTELDKIEGVFERPSDEVIRELSRALRQALGVSLFGIDIIINNQTGQHAVIDINAFPGYEGVSEFFTDLLNHIATVLQGQSTAMAATGDVALLRHSKLLAEPAGGLVGERTCSASPGCCGSMMGQDAPWKAEADAGGTAKLPHQRLGCNAGVSPSFQQHCVASLATKASSQ","proteinLength":"Full Length","predictedMolecularWeight":"48.1 kDa","actualMolecularWeight":null,"aminoAcidEnd":414,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":"Escherichia coli","accessionNumber":"Q13572","tags":[{"tag":"His","terminus":"N-Terminus"}]}]
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Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
False
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

The enzyme inositol 134-trisphosphate 5/6-kinase commonly known as ITPK1 catalyzes the phosphorylation of inositol trisphosphate (IP3) to produce higher phosphorylated forms of inositol phosphates. ITPK1 has a molecular mass of approximately 47 kDa and expresses in various human tissues though it is highly expressed in the brain and skeletal muscles. Researchers often measure ITPK1 activity using inositol trisphosphate (IP3) assays including IP3 ELISA and IP3 measurement methods.
Biological function summary

ITPK1 is involved in regulating cellular levels of inositol phosphates acting as a significant node in the inositol signaling pathways. As a part of a kinase complex it modulates cellular processes like signal transduction osmoregulation and cell growth. ITPK1's role in controlling IP3 levels positions it as a contributor to maintaining cellular homeostasis and enabling proper cellular responses to external stimuli.

Pathways

ITPK1 plays an essential role in the IP3 pathway by converting inositol trisphosphate (IP3) into inositol tetrakisphosphate (IP4). This pathway influences calcium release within cells impacting various physiological processes. ITPK1 is associated with pivotal signaling proteins like IP3 receptors which bind with IP3 to trigger intracellular calcium release playing an important role in cellular signaling and communication networks.

Mutations or dysfunctions in ITPK1 have links to conditions like schizophrenia and Down syndrome. Schizophrenia may relate to altered inositol phosphate metabolism wherein interactions with proteins like IP3 receptors are disrupted. ITPK1 also shows a connection to Alzheimer's disease due to its role in calcium signaling pathways which influences neuronal function and survival. These associations highlight ITPK1's potential significance in neuropsychiatric and neurodegenerative diseases.
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Specifications

Form

Liquid

Additional notes

ab130021 was purified using conventional chromatography techniques.

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General info

Function

Kinase that can phosphorylate various inositol polyphosphate such as Ins(3,4,5,6)P4 or Ins(1,3,4)P3 (PubMed : 11042108, PubMed : 8662638). Phosphorylates Ins(3,4,5,6)P4 at position 1 to form Ins(1,3,4,5,6)P5 (PubMed : 11042108). 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 (PubMed : 11042108, PubMed : 8662638). Also acts as an inositol polyphosphate phosphatase that dephosphorylates 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 (PubMed : 11909533, PubMed : 17616525). 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 (PubMed : 11909533). 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 (PubMed : 11909533, PubMed : 12925536, PubMed : 17616525). 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 (PubMed : 17616525).

Sequence similarities

Belongs to the ITPK1 family.

Post-translational modifications

Acetylation by EP300 and CREBBP destabilizes ITPK1, and down-regulates enzymatic activity. Deacetylated by SIRT1.

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Product protocols

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Target data

Kinase that can phosphorylate various inositol polyphosphate such as Ins(3,4,5,6)P4 or Ins(1,3,4)P3 (PubMed : 11042108, PubMed : 8662638). Phosphorylates Ins(3,4,5,6)P4 at position 1 to form Ins(1,3,4,5,6)P5 (PubMed : 11042108). 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 (PubMed : 11042108, PubMed : 8662638). Also acts as an inositol polyphosphate phosphatase that dephosphorylates 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 (PubMed : 11909533, PubMed : 17616525). 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 (PubMed : 11909533). 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 (PubMed : 11909533, PubMed : 12925536, PubMed : 17616525). 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 (PubMed : 17616525).
See full target information ITPK1
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