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MABS831

Sigma-Aldrich

Anti-PI3 Kinase Antibody, p85 Antibody, N-SH3 Antibody, clone 1D5.1

clone 1D5.1, from mouse

Synonym(s):

Phosphatidylinositol 3-kinase regulatory subunit alpha, Phosphatidylinositol 3-kinase 85 kDa regulatory subunit alpha, PI3-kinase regulatory subunit alpha, PtdIns-3-kinase regulatory subunit p85-alpha, PI3-kinase subunit p85-alpha, PI3K regulatory subuni

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

1D5.1, monoclonal

species reactivity

mouse, human

packaging

antibody small pack of 25 μg

technique(s)

western blot: suitable

isotype

IgG2bκ

NCBI accession no.

UniProt accession no.

shipped in

ambient

target post-translational modification

unmodified

Gene Information

human ... PIK3R1(5295)

General description

Phosphatidylinositol 3-kinase regulatory subunit alpha (UniProt: P27986; also known as Phosphatidylinositol 3-kinase 85 kDa regulatory subunit alpha, PI3-kinase regulatory subunit alpha, PtdIns-3-kinase regulatory subunit p85-alpha, PI3-kinase subunit p85-alpha, PI3K regulatory subunit alpha, PtdIns-3-kinase regulatory subunit alpha) is encoded by the PIK3R1 (also known as GRB1) gene (Gene ID: 5295) in human. PI3K regulatory subunit alpha catalyzes the phosphorylation of PI(4,5)P2 inositol ring at the 3 position to generate PI(3,4,5)P3, a potent second messenger that mediates survival signaling and insulin action. PI3 Kinase is a heterodimeric complex composed of an 85 kDa regulatory subunit and a 110 kDa catalytic subunit. Following ligand binding, tyrosine phosphorylation of growth factor receptors creates docking sites for p85 binding (through its SH2 domains), and acts as an adapter, mediating the association of the p110 catalytic unit to the plasma membrane. PI3 kinase alpha plays a role in insulin-stimulated increase in glucose uptake and glycogen synthesis in insulin-sensitive tissues. Mutations in PIK3R1 gene are known to be associated with insulin resistance.

Specificity

Clone 1D5.1 detects p85 subunit of human and murine PI-3 kinase alpha. It targets an epitope within 77 amino acids from the N-terminal region.

Immunogen

GST/His-tagged recombinant fragment corresponding to 77 amino acids from the N-terminal region of the p85 regulatory subunit of human PI 3-kinase alpha.

Application

Anti-PI3 Kinase, p85, N-SH3, clone 1D5.1, Cat. No. MABS831, is a mouse monoclonal antibody that detects human and murine p85 subunit of PI3 kinase. It has been tested for use in Western Blotting.
Research Category
Signaling
Western Blotting Analysis: 0.5 Āµg/mL from a representative lot detected PI3 Kinase, p85, N-SH3 in 10 Āµg of human cerebral cortex tissue lysate.

Quality

Evaluated by Western Blotting in NIH/3T3 L1 cell lysate.

Western Blotting Analysis: 0.5 Āµg/mL of this antibody detected PI3 Kinase, p85, N-SH3 in 10 Āµg of NIH/3T3 L1 cell lysate.

Target description

~85 kDa observed; 83.60 kDa calculated. Uncharacterized bands may be observed in some lysate(s).

Physical form

Format: Purified
Protein G purified
Purified mouse monoclonal antibody IgG2b in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8Ā°C from date of receipt.

Other Notes

Concentration: Please refer to lot specific datasheet.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Jennifer M Spangle et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(39), 24427-24433 (2020-09-16)
PIK3CA hotspot mutation is well established as an oncogenic driver event in cancer and its durable and efficacious inhibition is a focus in the development and testing of clinical cancer therapeutics. However, hundreds of cancer-associated PIK3CA mutations remain uncharacterized, their

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