Complex sentence: Folates, are "conjugated" pteridines, which contain para-aminobenzoic acid and glutamates at the 6 position on the pteridine ring, are critical compounds in a large number of biological group transfer reactions.
Split into simpler sentences: Folates, are "conjugated" pteridines which contain para-aminobenzoic acid and glutamates at the 6 position on the pteridine ring. They are critical compounds in a large number of biological group transfer reactions.