Complex sentence: Bifunctional heparan sulfate N-deacetylase/N-sulfotransferase 1 is an enzyme that in humans is encoded by the "NDST1" gene.
Split into simpler sentences: Bifunctional heparan sulfate N-deacetylase/N-sulfotransferase 1 is an enzyme. In humans, it is encoded by the "NDST1" gene.