Linked Life Data

18062709

Source:http://linkedlifedata.com/resource/pubmed/id/18062709

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2008-2-13
pubmed:abstractText
Here, we examine by atomic force microscopy (AFM) the kinetics and morphology of lipid domain growth during lipid phase separation by rapid thermal cooling of fully mixed two-component supported lipid bilayers. At the undercooled temperatures chosen, symmetric 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC)-rich domains favored slower reaction-limited growth whereas asymmetric galactosylceramide (GalCer)-rich domains favored faster diffusion-limited growth, indicated by shape factors and kinetic exponents. Because kinetically limited conditions could be accessed, we were able to estimate the activation energy barrier (approximately 16kT) and lateral diffusion coefficient (approximately 0.20 microm2/s) of lipid molecular addition to a growing domain. We discuss these results with respect to transition states, obstructed diffusion, and the necessity for coordinating growth in both leaflets in a symmetric lipid domain.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0743-7463
pubmed:author
pubmed:issnType
Print
pubmed:day
19
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1219-24
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Quantifying growth of symmetric and asymmetric lipid bilayer domains.
pubmed:affiliation
Biophysics Graduate Group, College of Biological Sciences, and Department of Chemical Engineering and Materials Science, University of California-Davis, CA 95616, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S., Research Support, Non-U.S. Gov't, Research Support, N.I.H., Extramural