This disclosure describes structural elements that enable transport of otherwise impermeable polar substances across biological membranes, in particular cell membranes. The elements are pH sensitive in terms of charge and hydrophilicity and undergo a polar - apolar transition when exposed to low pH.
本公开内容描述了一些结构元件,它们能使原本不可渗透的极性物质通过
生物膜,特别是细胞膜进行运输。这些元件在电荷和亲
水性方面对 pH 值敏感,当暴露于低 pH 值时,会发生极性-非极性转变。