The function of L3HYPDH (trans-L-3-hydroxyproline dehydratase, ENSG00000126790) is as follows. Catalyzes the dehydration of trans-3-hydroxy-L-proline to Delta(1)-pyrroline-2-carboxylate (Pyr2C). May be required to degrade trans-3-hydroxy-L-proline from the diet and originating from the degradation of proteins such as collagen-IV that contain it. .