Linked Life Data

3759343

Source:http://linkedlifedata.com/resource/pubmed/id/3759343

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1986-11-7
pubmed:abstractText
Crystals of [Phe4 Val6] antamanide (cyclic [ValProProPhePhe]2) grown from dioxane/H2O, with space group P21212 and cell parameters a = 15.099(4), b = 22.008(5) and c = 11.024(3) A, are almost identical to crystals grown from H2O/acetone, the structure of which was determined a number of years ago. Per peptide molecule there are the equivalent of 12 water molecules occupying 16 sites in both crystals; however, in the new investigation a number of water molecules present at one-half occupancy have been found in different positions than in the earlier analysis. The interpretation of the hydrogen bonding between peptide/water and between water/water is much more satisfactory. Pentagonal water assemblies are present in the solvent channel. There is a distinct indication of the occurrence of a bifurcated bond between two water molecules, as well as the presence of three-center hydrogen bonds joining three water molecules. This may be the first experimental example of a bifurcated bond between two water molecules.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0367-8377
pubmed:author
pubmed:issnType
Print
pubmed:volume
28
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6-14
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1986
pubmed:articleTitle
Water structure in [Phe4 Val6] antamanide X 12H2O crystallized from dioxane.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.