Assertion: tartaric acid's molecule | /r/CapableOf | cross the membrane
Facets:
value: in their protonated, uncharged form
type: OTHER
Source sentences:
text: Many biologically important molecules, including a number of pharmaceutical agents, are organic weak acids which can cross the membrane in their protonated, uncharged form but not in their charged form (i.e. as the conjugate base).