https://wiki.tiffa.net/w/index.php?action=history&feed=atom&title=Translations%3AVitamin_B12%2F13%2Fen 2026-07-10T00:34:28Z Revision history for this page on the wiki MediaWiki 1.43.0 https://wiki.tiffa.net/w/index.php?title=Translations:Vitamin_B12/13/en&diff=135207&oldid=prev 2024-04-05T11:15:35Z

<p>Importing a new version from external source</p> <p><b>New page</b></p><div>==Definition==<br /> Vitamin B&lt;sub&gt;12&lt;/sub&gt; is a [[coordination complex]] of [[cobalt]], which occupies the center of a [[corrin]] ligand and is further bound to a [[benzimidazole]] ligand and adenosyl group. A number of related species are known and these behave similarly, in particular all function as vitamins. This collection of compounds is sometimes referred to as &quot;cobalamins&quot;. These chemical compounds have a similar molecular structure, each of which shows vitamin activity in a vitamin-deficient biological system, they are referred to as [[vitamer]]s. The vitamin activity is as a [[coenzyme]], meaning that its presence is required for some enzyme-catalyzed reactions.<br /> * [[adenosylcobalamin]]<br /> * [[cyanocobalamin]], the adenosyl ligand in vitamin B&lt;sub&gt;12&lt;/sub&gt; is replaced by [[cyanide]].<br /> * [[hydroxocobalamin]], the adenosyl ligand in vitamin B&lt;sub&gt;12&lt;/sub&gt; is replaced by [[hydroxide]].<br /> * [[methylcobalamin]], the adenosyl ligand in vitamin B&lt;sub&gt;12&lt;/sub&gt; is replaced by [[methyl]].</div>

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