This part applies to grants awarded under section 464z-3(h) of the Public Health Service Act (the Act), which authorizes the Director of the National Institute on Minority Health and Health Disparities (NIMHD) to carry out a program of research endowment grants to eligible institutions to facilitate minority health and health disparities research (the NIMHD Research Endowment Program), and, with the exception of §§ 52i.5 and 52i.6, applies to that portion of an award made under section 464z-4(f) of the Act authorized by the NIMHD Director for research endowment.