Corrinoid

Corrin ring, numbered according to the 1975 IUPAC standard. Note that for consistency with the porphyrin numbering system, there is no 20 position. Positions 21-24 were numbered 20-23 in earlier literature.^[1]

Vitamin B₁₂ (cyanocobalamin)

Corrinoids are a group of compounds based on the skeleton of corrin, a cyclic system containing four pyrrole rings similar to porphyrins. These include compounds based on octadehydrocorrin, which has the trivial name corrole.^[2]

The cobalamins (vitamin B₁₂) are the best known members of the group. Other prominent examples include cobyrinic acid and its hexaamide cobyric acid; cobinic acid and its hexaamide cobinamide; cobamic acid and cobamide.

Compounds containing the "Cob-" suffix (not corrin) are cobalt derivatives, and may include an oxidation state, as in "Cob(II)alamin". When cobalt is replaced by another metal or hydrogen, the name changes accordingly, as in ferrobamic acid or hydrogenobamic acid.

References

1. ^ Dorothy Crowfoot Hodgkin (1965-11-16). "The Structure of the Corrin Nucleus from X-ray Analysis". Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences 288 (1414): 294–305. http://www.jstor.org/stable/2415001. 
2. ^ "The Nomenclature of Corrinoids: Recommendations 1975". IUPAC-IUB Commission on Biochemical Nomenclature (CBN). 1975. http://www.chem.qmul.ac.uk/iupac/misc/B12.html. 

External links

• MeSH Corrinoids
• "The Nomenclature of Corrinoids" at chem.qmul.ac.uk
• Goldbook

This article about a heterocyclic compound is a stub. You can help Wikipedia by expanding it.v · Categories: Tetrapyrroles Heterocyclic compound stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем сделать НИР Corrinne Yu Thomas Davis GFC, Corrinshego Look at other dictionaries: corrinoid — korinoidas statusas T sritis chemija apibrėžtis Korino darinys. atitikmenys: angl. corrinoid rus. корриноид …   Chemijos terminų aiškinamasis žodynas corrinoid — noun Any derivative of the corrin nucleus, which contains four reduced pyrrole rings joined in a macrocycle by three CH= groups and one direct bond …   Wiktionary corrinoid — A compound containing a corrin ring. * * * cor·rin·oid (korґin oid) a compound, such as a cobalamin, containing a corrin ring system …   Medical dictionary Cob(I)yrinic acid a,c-diamide adenosyltransferase — ATP:corrinoid adenosyltransferase the three dimensional structure of atp:corrinoid adenosyltransferase from salmonella typhimurium. apo atp form Identifiers Symbol CobA CobO BtuR …   Wikipedia CO-methylating acetyl-CoA synthase — In enzymology, a CO methylating acetyl CoA synthase (EC number|2.3.1.169) is an enzyme that catalyzes the chemical reaction:acetyl CoA + corrinoid protein ightleftharpoons CO + methylcorrinoid protein + CoAThus, the two substrates of this enzyme… …   Wikipedia Methanogenese — Übergeordnet Anaerobe Atmung Biosynthese der Alkane Metabolismus des Methan Untergeordnet …   Deutsch Wikipedia Nitrile hydratase — Identifiers EC number 4.2.1.84 CAS number 82391 37 5 …   Wikipedia Reduktiver Acetyl-CoA-Weg — Übergeordnet Kohlenstoffdioxid Assimilation Gene Ontology …   Deutsch Wikipedia Corrin — For other uses, see Corrin (disambiguation). Corrin Identifiers CAS number …   Wikipedia Corrinoids — are molecules incorporating corrin and a four membered polypyrrole.An example of a corrinoid is cyanocobalamin.External links* * [http://www.chem.qmul.ac.uk/iupac/misc/B12.html The Nomenclature of Corrinoids at chem.qmul.ac.uk] *… …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”