corrin

(redirected from Corrin ring)

cor·rin

(kōr'in),
The cyclic system of four pyrrole rings forming corrinoids, which are the central structure of the vitamins B12 and related compounds, differing from porphin (porphyrin) in that two of the pyrrole rings are directly linked (C-19 to C-1).
[fr. core (of vitamin B12 molecule)]
Farlex Partner Medical Dictionary © Farlex 2012

cor·rin

(kōr'in)
The cyclic system of four pyrrole rings forming corrinoids, which are the central structure of the vitamins B12 and related compounds.
[fr. core (of vitamin B12 molecule)]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
Iron and cobalt are transition metals adjacent in the periodic table, and the porphyrin ring of heme and the corrin ring of cobalamin are both substituted tetrapyrrole rings [11].