DE NOVO DESIGN OF TUNABLE PH-DRIVEN CONFORMATIONAL SWITCHES

摘要

Disclosed herein are polypeptides or polypeptide oligomers, including a buried hydrogen bond network that includes at least (1, 2, 3, 4, 5, 6, 7, 8, or 9) pH sensitive amino acids located (i) at an intra-chain interface between different: structural elements in one polypeptide:, or (it) at an inter-chain interface between structural elements present in different chains of a polypeptide oligomer, wherein the polypeptide or polypeptide oligomer is stable above a given pH, and wherein the polypeptide or polypeptide oligomer undergoes a conformational transition when subjected to a pH at or below the given pH.