• connexin
  • In general, allows transmembrane movement of molecules smaller than 485 Daltons (1,100 Daltons through invertebrate gap junctions ), although different connexin subunits may impart different pore sizes and different charge selectivity. (wikipedia.org)
  • Large biomolecules, for example, nucleic acid and protein , are precluded from cytoplasmic transfer between cells through gap junction connexin channels. (wikipedia.org)