rdf:type |
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lifeskim:mentions |
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pubmed:issue |
5246
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pubmed:dateCreated |
1996-2-8
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pubmed:abstractText |
Cations bind to the pi face of an aromatic structure through a surprisingly strong, non-covalent force termed the cation-pi interaction. The magnitude and generality of the effect have been established by gas-phase measurements and by studies of model receptors in aqueous media. To first order, the interaction can be considered an electrostatic attraction between a positive charge and the quadrupole moment of the aromatic. A great deal of direct and circumstantial evidence indicates that cation-pi interactions are important in a variety of proteins that bind cationic ligands or substrates. In this context, the amino acids phenylalanine (Phe), tyrosine (Tyr), and tryptophan (Trp) can be viewed as polar, yet hydrophobic, residues.
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pubmed:grant |
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Acetylcholine,
http://linkedlifedata.com/resource/pubmed/chemical/Benzene,
http://linkedlifedata.com/resource/pubmed/chemical/Cations,
http://linkedlifedata.com/resource/pubmed/chemical/Ion Channels,
http://linkedlifedata.com/resource/pubmed/chemical/Phenylalanine,
http://linkedlifedata.com/resource/pubmed/chemical/Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Receptors, Cholinergic,
http://linkedlifedata.com/resource/pubmed/chemical/Steroids,
http://linkedlifedata.com/resource/pubmed/chemical/Tryptophan,
http://linkedlifedata.com/resource/pubmed/chemical/Tyrosine,
http://linkedlifedata.com/resource/pubmed/chemical/Water
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pubmed:status |
MEDLINE
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pubmed:month |
Jan
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pubmed:issn |
0036-8075
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
12
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pubmed:volume |
271
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
163-8
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:8539615-Acetylcholine,
pubmed-meshheading:8539615-Benzene,
pubmed-meshheading:8539615-Binding Sites,
pubmed-meshheading:8539615-Cations,
pubmed-meshheading:8539615-Chemistry, Physical,
pubmed-meshheading:8539615-Ion Channels,
pubmed-meshheading:8539615-Phenylalanine,
pubmed-meshheading:8539615-Physicochemical Phenomena,
pubmed-meshheading:8539615-Proteins,
pubmed-meshheading:8539615-Receptors, Cholinergic,
pubmed-meshheading:8539615-Steroids,
pubmed-meshheading:8539615-Tryptophan,
pubmed-meshheading:8539615-Tyrosine,
pubmed-meshheading:8539615-Water
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pubmed:year |
1996
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pubmed:articleTitle |
Cation-pi interactions in chemistry and biology: a new view of benzene, Phe, Tyr, and Trp.
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pubmed:affiliation |
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena 91125, USA.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.,
Review,
Research Support, Non-U.S. Gov't
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