As can be seen even by this limited number of examples proteins carry out amazingly diverse functions.
Michael BeheSince natural selection requires a function to select, an irreducibly complex biological system, if there is such a thing, would have to arise as an integrated unit for natural selection to have anything to act on.
Michael BeheDespite some remaining puzzles, there's no reason to doubt that Darwin had this point right, that all creatures on earth are biological relatives
Michael BeheProteins are the machinery of living tissue that builds the structures and carries out the chemical reactions necessary for life.
Michael Behe