Any of a class of water-soluble, nitrogenous biological pigments.
Complex nitrogenous compounds containing four substituted pyrroles covalently joined into a ring structure. When complexed with a central metal atom it is called a metal loporphyrin.
A component of the hemoglobin molecule.
A member of a family of metal-containing biological pigments, the commonest of which is protoporphyrin IX.
An iron-containing ring structure that is a part of hemoglobin.
Any of a number of pigments widely distributed in living tissue (in, e.g., hemoglobin, myoglobin, and cytochromes) and important in many oxidation reactions.
One of a number of pigments derived from porphin, which are widely distributed in living things. All porphyrins form chelates with iron, magnesium, zinc, nickel, copper, and cobalt. These chelates are constituents of hemoglobin, myoglobin, the cytochromes, and chlorophyll, and are thus important in many oxidation/ reduction reactions in all living organisms.
Complex organic compounds which are sensitive to light and form the basis of respiratory pigments for example, haemoglobin and myoglobin. Porphyrins are crucial to many metabolic oxidation/reduction reactions in animals, plants, and micro-organisms.
Any of a group of nitrogen-containing organic compounds; they form the basis of animal and plant respiratory pigments; obtained from hemoglobin and chlorophyll.
Chemical pigments generated during the synthesis of blood proteins like hemoglobin.