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1170
Phospho-p38 MAPK (Thr180/Tyr182) Blocking Peptide
Experimental Controls
Blocking Peptide

Phospho-p38 MAPK (Thr180/Tyr182) Blocking Peptide #1170

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Product Usage Information

Use as a blocking reagent to evaluate the specificity of antibody reactivity in dot blot protocols.

Storage

Supplied in 20 mM potassium phosphate (pH 7.0), 50 mM NaCl, 0.1 mM EDTA, 1 mg/ml BSA, 5% glycerol and 1% DMSO. Store at –20°C.

Product Description

This peptide is used to specifically block Phospho-p38 MAPK (Thr180/Tyr182) (12F8) Rabbit mAb #4631 reactivity.

Quality Control

The quality of the peptide was evaluated by reversed-phase HPLC and by mass spectrometry. The peptide reacts with Phospho-p38 MAPK (Thr180/Tyr182) (12F8) Rabbit mAb #4631 in dot blot.

Background

p38 MAP kinase (MAPK), also called RK (1) or CSBP (2), is the mammalian orthologue of the yeast HOG kinase that participates in a signaling cascade controlling cellular responses to cytokines and stress (1-4). Four isoforms of p38 MAPK, p38α, β, γ (also known as Erk6 or SAPK3), and δ (also known as SAPK4) have been identified. Similar to the SAPK/JNK pathway, p38 MAPK is activated by a variety of cellular stresses, including osmotic shock, inflammatory cytokines, lipopolysaccharide (LPS), UV light, and growth factors (1-5). MKK3, MKK6, and SEK activate p38 MAPK by phosphorylation at Thr180 and Tyr182. Activated p38 MAPK has been shown to phosphorylate and activate MAPKAP kinase 2 (3) and to phosphorylate the transcription factors ATF-2 (5), Max (6), and MEF2 (5-8). SB203580 (4-(4-fluorophenyl)-2-(4-methylsulfinylphenyl)-5-(4-pyridyl)-imidazole) is a selective inhibitor of p38 MAPK. This compound inhibits the activation of MAPKAPK-2 by p38 MAPK and subsequent phosphorylation of HSP27 (9). SB203580 inhibits p38 MAPK catalytic activity by binding to the ATP-binding pocket, but does not inhibit phosphorylation of p38 MAPK by upstream kinases (10).

Pathways

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Limited Uses

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For Research Use Only. Not for Use in Diagnostic Procedures.
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Important Ordering Details

Custom Ordering Details: This product is assembled upon order. Please allow two-four weeks for your product to be processed.