P3842 Sigma


2 mg/mL, buffered aqueous solution

Synonym: Phosphothreonine Antibody Inhibitor



Biochem/physiol Actions

O-phospho-L-threonine conjugated to bovine serum albumin. Phosphothreonine antibody inhibitor specifically blocks the reactivity of anti-phosphothreonine antibody. It does not block the activity of anti-phosphotyrosine or anti-phosphoserine-specific antibodies.


Working dilution is at least 10 μg/ml by the specific inhibition of the reactivity of Monoclonal Anti-Phosphothreonine (Sigma Product No. P 3555) in ELISA.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.


Phosphothreonine-BSA can be used in various immunochemical assays like ELISA and immunoblotting for the specific inhibition of the reactivity of anti-phosphothreonine antibodies.

General description

Phosphothreonine-BSA is a Phosphothreonine antibody inhibitor which blocks the reactivity of anti-phosphothreonine antibody. Antibodies against phosphorylated amino acid can be used as a tool for identification, quantification and immunoaffinity isolation of activated cellular proteins. The product specifically blocks the reactivity of anti-phosphothreonine antibody but does not block anti-phosphoserine- or anti-phosphotyrosine specific antibodies.

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Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


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