Experiments on electrical migration of peptides and proteins inside porous membranes: influences of adsorption, diffusion and pore dimensions

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Abstract
Favorable conditions for ionic migration of L-arginine, gramicidin S, tyrocidine, insulin, ribonuclease, cytochrome c, lysozyme, mercuripapain and salmine resulted from using a phenol-acetic acid-water mixture as solvent inside membranes of denitrated collodion. Experiments on ionic migration in finely pored membranes showed a strong selective retardation effect; those peptides and proteins of higher molecular weight were the more strongly retarded. Evidence was found for complex formation by cytochrome c with insulin and with tyrocidine.

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