Table of Contents
What is the advantage of Corrin ring than porphyrin ring in vitamin B12?
An important aspect of the corrin ring, when compared to the porphyrin, is the relative flexibility of the corrin system, the corrin ring is also less flat when viewed from the side than is a porphyrin ring. This adds up to some considerable differences between the chemistry of a cobalt porphyrin and a cobalt corrin.
Which ring is present in vitamin B12?
Vitamin B12 is the most chemically complex of all the vitamins. The structure of B12 is based on a corrin ring, which is similar to the porphyrin ring found in heme.
What is corrin macrocyclic ligand?
In coordination chemistry, a macrocyclic ligand is a macrocyclic ring having at least nine atoms (including all hetero atoms) and three or more donor sites that serve as ligands that can bind to a central metal ion. Crown ethers and porphyrins are prominent examples.
What is vitamin B12 structure?
C₆₃H₈₈CoN₁₄O₁₄PCobalamin / Formula
Is Corrin ring aromatic?
Corroles (octadehydrocorrins) are fully aromatic derivatives of corrins.
What is a corrin?
Description. Corrin is a tetrapyrrole fundamental parent that is the core macrocycle of vitamin B12. It has a role as a cofactor. It is a member of corrins and a tetrapyrrole fundamental parent. ChEBI.
Is corrin aromatic?
What type of dragon is corrin?
The Feral Dragon (Japanese: 竜 Dragon) is a dragon class which was introduced in Fire Emblem Fates. It exclusively belongs to Corrin and their child, Kana, and appears temporarily in scenes where these characters first discover their dragon powers.
Is corrin ring aromatic?
What is a Corrin?
What is Chlorin ring?
Chlorophylls. The most abundant chlorin is the photosynthetic pigment chlorophyll. Chlorophylls have a fifth, ketone-containing ring unlike the chlorins. Diverse chlorophylls exists, such as chlorophyll a, chlorophyll b, chlorophyll d, chlorophyll e, chlorophyll f, and chlorophyll g.
What is Tetrapyrrole ring?
Tetrapyrroles are a class of chemical compounds that contain four pyrrole or pyrrole-like rings. The pyrrole/pyrrole derivatives are linked by (=(CH)- or -CH. – units), in either a linear or a cyclic fashion. Pyrroles are a five-atom ring with four carbon atoms and one nitrogen atom.
What is the structure of the corrin ring?
The corrin ring resembles the porphyrin ring, which occurs in hemoglobin. Both feature four pyrrole -like subunits organized into a ring with a largely conjugated structure of alternating double and single bonds.
What does Corrin stand for?
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)]
How many pyrrole rings are in Corrin?
Corrin contains four pyrrole rings linked together, which vaguely resembles structurally the porphyin ring in heme (Figure 7). The core of the vitamin consists of a corrin ring with a central cobalt atom.
What is the function of corrinoid ring in vitamin B 12?
Upon deprotonation, the corrinoid ring is capable of binding cobalt. In vitamin B 12, the resulting complex also features a benzimidazole-derived ligand, and the sixth site on the octahedron serves as the catalytic center. The corrin ring resembles the porphyrin ring, which occurs in hemoglobin.