PIP4K2B

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Identifiers
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External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
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RefSeq (protein)

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Phosphatidylinositol-5-phosphate 4-kinase type-2 beta is an enzyme that in humans is encoded by the PIP4K2B gene.[1][2][3][4]

The protein encoded by this gene catalyzes the phosphorylation of phosphatidylinositol-4-phosphate on the fifth hydroxyl of the myo-inositol ring to form phosphatidylinositol-4,5-bisphosphate. This gene is a member of the phosphatidylinositol-4-phosphate 5-kinase family. The encoded protein sequence does not show similarity to other kinases, but the protein does exhibit kinase activity. Additionally, the encoded protein interacts with p55 TNF receptor.[4]

Interactions

PIP4K2B has been shown to interact with TNFRSF1A.[1] In addition, PIP4K2B has been shown to interact with PIP4K2A and may modulate the cellular localisation of PIP4K2A.[5]

Structure

The structure of PIP4K2B has been determined through X-ray crystallography.[6]

References

  1. 1.0 1.1 Castellino AM, Parker GJ, Boronenkov IV, Anderson RA, Chao MV (Apr 1997). "A novel interaction between the juxtamembrane region of the p55 tumor necrosis factor receptor and phosphatidylinositol-4-phosphate 5-kinase". J Biol Chem. 272 (9): 5861–70. doi:10.1074/jbc.272.9.5861. PMID 9038203.
  2. Luoh SW, Venkatesan N, Tripathi R (Feb 2004). "Overexpression of the amplified Pip4k2beta gene from 17q11-12 in breast cancer cells confers proliferation advantage". Oncogene. 23 (7): 1354–63. doi:10.1038/sj.onc.1207251. PMID 14691457.
  3. Rameh LE, Tolias KF, Duckworth BC, Cantley LC (Nov 1997). "A new pathway for synthesis of phosphatidylinositol-4,5-bisphosphate". Nature. 390 (6656): 192–6. doi:10.1038/36621. PMID 9367159.
  4. 4.0 4.1 "Entrez Gene: PIP5K2B phosphatidylinositol-4-phosphate 5-kinase, type II, beta".
  5. Bultsma, Yvette; Keune, Willem-Jan; Divecha, Nullin (2010-09-01). "PIP4Kβ interacts with and modulates nuclear localization of the high-activity PtdIns5P-4-kinase isoform PIP4Kα". Biochemical Journal. 430 (2): 223–235. doi:10.1042/bj20100341. ISSN 0264-6021. PMID 20583997.
  6. Rao, Vibha D; Misra, Saurav; Boronenkov, Igor V; Anderson, Richard A; Hurley, James H. "Structure of Type IIβ Phosphatidylinositol Phosphate Kinase". Cell. 94 (6): 829–839. doi:10.1016/s0092-8674(00)81741-9.

Further reading