Specific biomembrane adhesion --Indirect lateral interactions between bound receptor molecules

被引：0
|
作者：
C.W. Maier
A. Behrisch
A. Kloboucek
D.A. Simson
R. Merkel
机构：
[1] Lehrstuhl für Biophysik,
[2] E22,undefined
[3] Technische Universität München,undefined
[4] 85748 Garching,undefined
[5] Germany,undefined
[6] Research Center Julich,undefined
[7] Institute for Thin Films and Interfaces 4,undefined
[8] 52425 Julich,undefined
[9] Germany,undefined
来源：
The European Physical Journal E | 2001年 / 6卷
关键词：
PACS. 87.15.Kg Molecular interactions; membrane-protein interactions – 87.16.Dg Membranes, bilayers, and vesicles;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We studied biomembrane adhesion using the micropipet aspiration technique. Adhesion was caused by contact site A, a laterally mobile and highly specific cell adhesion molecule from Dictyostelium discoideum, reconstituted in lipid vesicles of DOPC (L-α-dioleoylphosphatidylcholine) with an addition of 5 mol % DOPE-PEG2000 (1,2-diacyl-sn-glycero-3-phosphatidylethanolamine-N-[poly(ethyleneglycol) 2000]). The “fuzzy” membrane mimics the cellular plasma membrane including the glycocalyx. We found adhesion and subsequent receptor migration into the contact zone. Using membrane tension jumps to probe the equation of state of the two-dimensional “gas” of bound receptor pairs within the contact zone, we found strong, attractive lateral interactions.
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页码：273 / 276
页数：3
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