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Title: A peptide derived from LFA-1 protein that modulates T-cell adhesion binds to soluble ICAM-1 protein
Authors: Jois, S.D.S. 
Siahaan, T.J.
Keywords: Cell adhesion inhibition
Peptide-protein complex
Issue Date: Apr-2003
Citation: Jois, S.D.S.,Siahaan, T.J. (2003-04). A peptide derived from LFA-1 protein that modulates T-cell adhesion binds to soluble ICAM-1 protein. Journal of Biomolecular Structure and Dynamics 20 (5) : 635-644. ScholarBank@NUS Repository.
Abstract: Leukocyte function associated antigen 1 (LFA-1) and intercellular adhesion molecule 1 (ICAM-1) have been shown to be critical for adhesion process and immune response. Modulation or inhibition of the interaction between LFA-1/ICAM-1 interactions can result in therapeutic effects. Our group and others have shown that peptides derived from ICAM-1 or LFA-1 inhibit adhesion in a homotypic T-cell adhesion assay. It is likely that the peptides derived from ICAM-1 bind to LFA-1 and peptides derived from LFA-1 bind to ICAM-1 and inhibit the adhesion interaction. However, there are no concrete experimental evidence to show that peptides bind to either LFA-1 or ICAM-1 and inhibit the adhesion. Using NMR, CD and docking studies we have shown that an LFA-1 derived peptide binds to soluble ICAM-1. Docking studies using "autodock" resulted in LFA-1 peptide interacting with the ICAM-1 protein near Glu34. The proposed model based on our experimental data indicated that the LFA-1 peptide interacts with the protein via three intermolecular hydrogen bonds. Hydrophobic interactions also play a role in stabilizing the complex.
Source Title: Journal of Biomolecular Structure and Dynamics
ISSN: 07391102
Appears in Collections:Staff Publications

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