Water structure-dependent charge transport in proteins.
Dielectric and conductivity measurements are reported for bovine serum albumin as a function of hydration. Strong evidence is found for the existence of mobile charges whose short- and long-range hopping motion strongly depends on the physical state of the protein-bound water. These charges are considered to be protons. Insights into the nature of the electrical properties of protein-methylglyoxal complexes are provided, and the possibilities for correlated proton-electron motions are outlined.
D000818:Animals; D002417:Cattle; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D004553:Electric Conductivity; D004579:Electron Transport; D008433:Mathematics; D011506:Proteins / Q000378:metabolism*; D011522:Protons; D012710:Serum Albumin, Bovine / Q000378:metabolism; D014867:Water / Q000378:metabolism*
D011506:Proteins; D011522:Protons; D014867:Water; D012710:Serum Albumin, Bovine