what is the general structure of porphyrin?
four pyrrole rings (A,B,C,D) connected by methenyl (-HC=) bridges
eight side chains, two per pyrrole unit (R1-R8)
What will make porphyrin compund colorless?
what happens to the name?
a reduction of the methenyl bridges to methylene bridges (-CH
colorless tetrapyrroles end in suffix -ogen
what are pophyrias caused by?
a deficiency in any of the heme biosynthetic enzymes (except ALA-S)