Like the Greek sea god Proteus,who coud assume different forms.protelns act throu changesnon Proteins (from theGreek Protelos,Meaning "primary")are the primary agents of biologlcal fimction"Proteus,Old Man of the Sea Roman period masaic.from Thessalontka. Ist cntury A.D.Natlonal Archoeological Museum, Athens Anclent Art andd Architeture Collection Ld/Bridgeman An Library.London/New York)