Side chain: Difference between revisions
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In [[organic chemistry]] and [[biochemistry]], a '''side chain''' is a [[Substituent|chemical group]] that is attached to a core part of the molecule called "main chain" or [[Backbone chain|backbone]]. The placeholder ''R'' is often used as a generic placeholder for side chains, the ''R'' historically being derived from {{Citation needed|date=January 2011}} ''[[radical (chemistry)|radical]]'' or ''rest'' or "random". |
In [[organic chemistry]] and [[biochemistry]], a '''side chain''' is a [[Substituent|chemical group]] that is attached to a core part of the molecule called "main chain" or [[Backbone chain|backbone]]. The placeholder ''R'' is often used as a generic placeholder for side chains, the ''R'' historically being derived from {{Citation needed|date=January 2011}} ''[[radical (chemistry)|radical]]'' or ''rest'' or "random". |
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In [[polymer]] science, the side chain or '''pendant chain''' is [[oligomer]]ic or polymeric offshoot extends from the [[backbone chain]] of a polymer. Side chains have noteworthy influence on a polymer's properties, mainly its [[ |
In [[polymer]] science, the side chain or '''pendant chain''' is [[oligomer]]ic or polymeric offshoot extends from the [[backbone chain]] of a polymer. Side chains have noteworthy influence on a polymer's properties, mainly its [[polymer#crystallinity|crystallinity]] and [[density]]. An oligomeric branch may be termed a short-chain branch and a polymeric branch may be termed a long-chain branch. [[Pendant group|Side groups]] are different from side chains; they are neither oligomeric nor polymeric<ref>http://goldbook.iupac.org/B00720.html</ref>. |
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In [[protein]]s (composed of [[amino acid]]s) the side chains are attached to the alpha-carbon atoms of the amide '''backbone'''. |
In [[protein]]s (composed of [[amino acid]]s) the side chains are attached to the alpha-carbon atoms of the amide '''backbone'''. |
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Revision as of 17:17, 30 July 2011
In organic chemistry and biochemistry, a side chain is a chemical group that is attached to a core part of the molecule called "main chain" or backbone. The placeholder R is often used as a generic placeholder for side chains, the R historically being derived from [citation needed] radical or rest or "random".
In polymer science, the side chain or pendant chain is oligomeric or polymeric offshoot extends from the backbone chain of a polymer. Side chains have noteworthy influence on a polymer's properties, mainly its crystallinity and density. An oligomeric branch may be termed a short-chain branch and a polymeric branch may be termed a long-chain branch. Side groups are different from side chains; they are neither oligomeric nor polymeric[1].
In proteins (composed of amino acids) the side chains are attached to the alpha-carbon atoms of the amide backbone.
See also
References
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