Object's details: The quantum casimir effect may be a universal force organizing the bilayer structure of the cell membrane.

Provider:Repozytorium Instytutu Biochemii i Biofizyki Polskiej Akademii Nauk

Description

Title:
The quantum casimir effect may be a universal force organizing the bilayer structure of the cell membrane.
Creator:
Pawlowski, Piotr H;
Zielenkiewicz, Piotr
Description:
A mathematic-physical model of the interaction between cell membrane bilayer leaflets is proposed based on the Casimir effect in dielectrics. This model explains why the layers of a lipid membrane gently slide one past another rather than penetrate each other. The presented model reveals the dependence of variations in the free energy of the system on the membrane thickness. This function is characterized by the two close minima corresponding to the different levels of interdigitation of the lipids from neighbor layers. The energy barrier of the compressing transition between the predicted minima is estimated to be 5.7 kT/lipid, and the return energy is estimated to be 3.1 kT/lipid. The proposed model enables estimation of the value of the membrane elastic thickness modulus of compressibility, which is 1.7 × 10(9) N/m(2), and the value of the interlayer friction coefficient, which is 1.9 × 10(8) Ns/m(3).
Object availability:
free access
Date:
2013.05
Type:
Article;
PeerReviewed
Language:
English;
eng
Format:
application/msword
Relation: http://eprints.ibb.waw.pl/545
Subject:
QC Physics;
QH301 Biology
Identifier: http://eprints.ibb.waw.pl/545/1/manuscript_JMB5.doc ;
Pawlowski, Piotr H and Zielenkiewicz, Piotr (2013) The quantum casimir effect may be a universal force organizing the bilayer structure of the cell membrane. The Journal of membrane biology, 246 (5). pp. 383-9. ISSN 1432-1424
Data provider:
Repozytorium Instytutu Biochemii i Biofizyki Polskiej Akademii Nauk

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Object's details: The quantum casimir effect may be a universal force organizing the bilayer structure of the cell membrane.

Description

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