Dynamics of the HD regulatory subdomain of PARP-1; substrate access and allostery in PARP activation and inhibition. - Ogden TEH; Yang JC; Schimpl M; Easton LE; Underwood E; Rawlins PB; McCauley MM; Langelier MF; Pascal JM; Embrey KJ; Neuhaus D (Nucleic acids research, 2021)