Allele-Specific Monoclonal Antibodies Against Glutathione S -transferase Mul-1

Abstract

ABSTRACT

IgG₁ class mouse monoclonal antibodies (MAbs) were produced against human glutathione S-transferase Mul-1 (GSTMul-1 ). Eight MAbs of 16 are able to recognize only the native form of the enzyme; 4 MAbs bind to native and denaturated enzyme, and the remaining 4 can bind only to partially denatured antigen in direct ELISA or Western blot. The antibodies recognizing the native form of the enzyme bind to six different epitopes. Three overlapping epitopes are responsible for specific binding of MAbs to different allelic variants of GSTMul-1. Three allele-specific antibodies, 2E1,11F12, and 7D11, bind to GSTMla monomer and the other two, 1H8 and 3H10, recognize GSTMlb monomer.