<prompt> Rossmann fold associated NADH domain is found in which enzyme?Lactate dehydrogenasePyruvate dehydrogenaseMalate dehydrogenaseIsocitrate dehydrogenase  <response>: Lactate dehydrogenase is comprised of two domains, an N-terminal NAD -binding domain and a C-terminal binding domain for the second substrate, pyruvate. Lactate dehydrogenase is one of the family of oxidoreductases that share a common N-terminal NADP -binding domain known as the Rossmann fold. By fusing a segment of DNA coding for a Rossmann fold domain to that coding for a variety of C-terminal domains, a large family of oxidoreductases have evolved that utilize NADP NADPH for the oxidation and reduction of a wide range of metabolites.Ref: Harpers illustrated biochemistry. 30th edition page no: 40 