The three-dimensional conformation of biomolecules is of the utmost importance in their interactions; for example, in the binding of a substrate (reactant) to the catalytic site of an enzyme (Fig. 3-8), the two molecules must fit each other closely, in a complementary fashion, for biological function.
DD&A stands for Depletion, Depreciation and Amortization. Suggest new definition. This definition appears frequently and is found in the following Acronym Finder categories: Business, finance, etc.
Regulation DD. DEFINITION of 'Regulation DD'. A regulation set forth by the Federal Reserve. Regulation DD was enacted to implement the Truth in Savings Act that was passed in 1991. This act requires lenders to provide certain uniform information about fees and interest when opening an account for a customer. BREAKING DOWN 'Regulation DD'.