Linked Life Data

638152

Source:http://linkedlifedata.com/resource/pubmed/id/638152

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1978-6-17
pubmed:abstractText
The conformation of the polar group of egg lysophosphatidylcholine and 1-myristoyl-sn-glycer-3-phosphorylcholine present as micelles in aqueous solution has been studied using NMR methods. In the absence of polyvalent cations the preferred conformation derived from spin-spin coupling constants is similar, but not identical, to that of phosphatidylethanolamine in the crystal structure (cf. Hitchcock, P.B., Mason, R., Thomas, K.M. and Shipley, G.F. (1974) Proc. Natl. Acad. Sci. U.S. 71, 3036--3040). The presence of lanthanides induces a conformational change involving primarily the phosphorylcholine group, e.g. torsion angle alpha5 changes from an all gauche to an approximate trans disposition. The gauche leads to trans transitions observed with torsion angles alpha3 and alpha5 produce a more extended orientation of the polar group (relative to the hydrocarbon chain axis). In the presence of lanthanides the conformation of lysophosphatidylcholine is very similar to that of the diacyl phosphatidylcholines observed in fully hydrated bilayers (cf. Hauser, H., Phillips, M.C., Levine, B.A. and Williams, R.J.P. (1976) Nature 261, 390--394) with the P-N vector at an angle of about 45 degrees to the bilayer.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
20
pubmed:volume
508
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
450-63
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1978
pubmed:articleTitle
The conformation of the polar group of lysophosphatidylcholine in H2O: conformational changes induced by polyvalent cations.
pubmed:publicationType
Journal Article