the proteins represent two formally different enzyme activities ( ec 1.1.1.1 and ec 1.1.1.14 ) , three different types of molecule ( dimeric alcohol dehydrogenase , tetrameric alcohol dehydrogenase , tetrameric sorbitol dehydrogenase ) , metalloproteins with different zinc contents ( 1 or 2 atoms per subunit ) , and polypeptide chains from different kingdoms and orders ( mammals , higher plants , fungus , yeasts ) .
C0033684
proteins
C0025544
metalloproteins