PIP5K1A, NT (Phosphatidylinositol-4-phosphate 5-kinase Type-1 alpha, PtdIns(4)P-5-Kinase alpha, PIP5KI-alpha, Phosphatidylinositol-4-phosphate 5-kinase Type I alpha, 68kD Type I Phosphatidylinositol-4-phosphate 5-kinase alpha, PIP5KIalpha) (PE)

Overexpression of phosphatidylinositol phosphate 5-kinase alpha (PIP5KIalpha), which synthesizes PIP2, suppresses apoptosis, whereas a kinase-deficient mutant does not. Protection by the wild-type PIP5KIalpha isaccompanied by decreases in the generation of activated caspases and of caspase 3-cleaved PARP. Protection is not mediated through PIP3 or Akt activation. An anti-apoptotic role for PIP(2) is substantiated by the finding that PIP5KIalpha is cleaved by caspase 3 during apoptosis, and cleavage inactivates PIP5KIalpha in vitro. Mutation of the P(4) position (D279A) of the PIP5KIalpha caspase 3 cleavage consensus prevents cleavage in vitro, and during apoptosis in vivo. Significantly, the caspase 3-resistant PIP5KIalpha mutant is more effective in suppressing apoptosis than the wild-type kinase. PIP2 is a direct regulator of apical and effector caspases in the death receptor and mitochondrial pathways, and PIP5KIalpha inactivation contributes to the progression of apoptosis.\n\nApplications: \nSuitable for use in ELISA and Western Blot. Other applications not tested.\n\nRecommended Dilution:\nELISA: 1:1,000 \nWestern Blot: 1:100-1:500\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Do not freeze R-Phycoerythrin conjugates. Light sensitive. Aliquots are stable for at least 6 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

P4071-76A-PE

Size

200ul

Applications

ELISA, WB

Hosts

Rabbit

Reactivities

Hum

Form

Supplied as a liquid in PBS, pH 7.2. Contains ~0.09% sodium azide. Conjugated to R-Phycoerythrin (R-PE).

P Type

Pab

Purity

Purified by Protein G affinity chromatography.

Isotype

IgG

References

1.Doughman, R.L., et al., J. Biol. Chem. 278(25):23036-23045 (2003). 2.Loijens, J.C., et al., J. Biol. Chem. 271(51):32937-32943 (1996). 3.Xie, Y., et al., Cytogenet. Cell Genet. 88(3-4), 197-199 (2000).

Additional Info

Recognizes human PIP5K1A.