definition
Any of a class of heterocyclic compounds containing pyrrole rings arranged in a square or other similar shape; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc.).
The research study is focused on an unknown iron porphyrin compound.
This confirms that the porphyrin trimer has exactly the right size to bind the exo product.
The porphyrias are disorders in which the body produces too much porphyrin and insufficient heme (an iron-containing nonprotein portion of the hemoglobin molecule).
Porphyrin is a foundation structure for heme and certain enzymes.
The heme molecule is composed of porphyrin and an iron atom.
Much of the heme biosynthesis pathway is dedicated to constructing the porphyrin molecule.
Porphyrin is a large molecule shaped like a four-leaf clover.
In the past, the porphyrias were divided into two general categories based on the location of the porphyrin production.
If the porphyria becomes symptomatic, the common factor between all types is an abnormal accumulation of protoporphyrins or porphyrin.
Owing to deficient ferrochelatase, the last step in the heme biosynthesis pathway-the insertion of an iron atom into a porphyrin molecule-cannot be completed.
The presence and estimated quantity of porphyrin and protoporphyrins in biological samples are easily detected using spectrofluorometric testing.
Protoporphyrin-A kind of porphyrin that links with iron to form the heme of hemoglobin.
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