This product cannot bind to the native Bax. It recognizes an epitope comprised of amino acids 13–19 of Bax, which is only accessible on the activated form. Please see the link below to review a publication providing additional details:
Elucidation of some Bax conformational changes through crystallization of an antibody–peptide complex
Peyerl, et al., Cell Death and Differentiation (2007) 14, 447–452
https://www.nature.com/articles/4402025