I'm not sure exactly what you are asking, can you elaborate more on the type of control you would like to use? 

Hey Khalid, sorry for the confusion. 

I am looking for a monoclonal antibody that does not bind to bacterial ATP synthase beta subunit recombinant protein (species Aggregatibacter actinomycetemcomitans). 

I plan to use this antibody as a negative control for my western blot in which I test the binding of another monoclonal antibody to this same synthase protein. Just to make sure that if there is any binding of my experimental mAb, it is not non-specific. 

Thank you. 

Use control isotype antibody, ie Mouse control IgG. It is generally taken as negative control.