Human/Mouse/Rat Phospho-p70 S6 Kinase (T421/S424) Antibody

Catalog #: MAB8965 Datasheet

Recombinant Monoclonal Antibody

Catalog #	Availability	Size / Price	Qty
MAB8965
MAB8965-SP

Detection of Human Phospho-p70 S6 Kinase by Western Blot.

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Human/Mouse/Rat Phospho-p70 S6 Kinase (T421/S424) Antibody Summary

Species Reactivity

Human, Mouse, Rat

Specificity

Detects human p70 S6 Kinase when phosphorylated at T421/S424.

Source

Recombinant Monoclonal Rabbit IgG Clone # 1143C

Purification

Protein A or G purified from cell culture supernatant

Immunogen

Phosphopeptide containing the human p70 S6 Kinase T421/S424 site

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Label

Unconjugated

Applications

Recommended Concentration

Sample

Western Blot

0.1 µg/mL

See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot

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Detection of Human Phospho-p70 S6 Kinase by Western Blot. Western blot shows lysates of MCF-7 human breast cancer cell line untreated (-) or treated (+) with 100 ng/mL Recombinant Human IGF-I (Catalog # 291-G1) for 1 hour. PVDF membrane was probed with 0.1 µg/mL of Rabbit Anti-Human/Mouse/Rat Phospho-p70 S6 Kinase (T421/S424) Monoclonal Antibody (Catalog # MAB8965) followed by HRP-conjugated Anti-Rabbit IgG Secondary Antibody (Catalog # HAF008). Specific bands were detected for Phopsho-p70 S6 Kinase (T421/S424) at approximately 70 kDa and Phospho-p85 S6 Kinase (T444/S447) at 85 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.

12 months from date of receipt, -20 to -70 °C as supplied.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: p70 S6 Kinase

p70 S6 Kinase (p70S6K) is responsible for the phosphorylation of 40S ribosomal protein S6 and is ubiquitously expressed in human adult tissues (1). p70S6K is activated by serum stimulation and this activation is inhibited by wortmannin and rapamycin. p70S6K activity undergoes changes in the cell cycle and increases 20-fold in G1 cells released from G0 (2). p70S6K activation requires sequential phosphorylations at proline-directed residues in the putative autoinhibitory pseudosubstrate domain, as well as T389, a site phosphorylated by Phosphoinositide-Dependent Kinase 1 (PDK1).

References

Ferrari, S. et al. (1994) Crit. Rev. Biochem. Mol. Biol. 29:385.
Edelmann, H.M. et al. (1996) J. Biol. Chem. 271:963.

Entrez Gene IDs

6198 (Human); 72508 (Mouse); 83840 (Rat)

Alternate Names

EC 2.7.11; EC 2.7.11.1; p70 ribosomal S6 kinase alpha; p70 S6 kinase alpha; p70 S6 Kinase; p70 S6 kinase, alpha 1,70 kDa ribosomal protein S6 kinase 1; p70 S6 kinase, alpha 2; p70 S6KA; p70 S6K-alpha; p70(S6K)-alpha; p70-alpha; p70-S6K; P70S6K1; PS6K; ribosomal protein S6 kinase beta-1; Ribosomal protein S6 kinase I; ribosomal protein S6 kinase, 70kD, polypeptide 1; ribosomal protein S6 kinase, 70kDa, polypeptide 1; RPS6KB1; S6K; S6K1; S6K1p70-S6K 1; S6K-beta-1; serine/threonine kinase 14 alpha; Serine/threonine-protein kinase 14A; STK14A