BIOCHEMISTRY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site porphin A chemical made up of four pyrrole molecules linked by carbon-hydrogen bridges. The bonding arrangement within porphin is responsible for the reddish color of its derivatives. Porphin is the building block of both heme (found in hemoglobin) and chlorophyll. Related category    • BIOCHEMISTRY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP