Skip to main content

Research Repository

Advanced Search

Biophysical analysis of a lethal laminin alpha-1 mutation reveals altered self-interaction

Patel, Trushar R.; Nikodemus, Denise; Besong, Tabot M.D.; Reuten, Raphael; Meier, Markus; Harding, Stephen E.; Winzor, Donald J.; Koch, Manuel; Stetefeld, J�rg


Trushar R. Patel

Denise Nikodemus

Tabot M.D. Besong

Raphael Reuten

Markus Meier

Profile Image

Professor of Applied Biochemistry

Donald J. Winzor

Manuel Koch

J�rg Stetefeld


Laminins are key basement membrane molecules that influence several biological activities and are linked to a number of diseases. They are secreted as heterotrimeric proteins consisting of one α, one β, and one γ chain, followed by their assembly into a polymer-like sheet at the basement membrane. Using sedimentation velocity, dynamic light scattering, and surface plasmon resonance experiments, we studied self-association of three laminin (LM) N-terminal fragments α-1 (hLM α-1 N), α-5 (hLM α-5 N) and β-3 (hLM β-3 N) originating from the short arms of the human laminin αβγ heterotrimer. Corresponding studies of the hLM α-1 N C49S mutant, equivalent to the larval lethal C56S mutant in zebrafish, have shown that this mutation causes enhanced self-association behavior, an observation that provides a plausible explanation for the inability of laminin bearing this mutation to fulfill functional roles in vivo, and hence for the deleterious pathological consequences of the mutation on lens function.


Patel, T. R., Nikodemus, D., Besong, T. M., Reuten, R., Meier, M., Harding, S. E., …Stetefeld, J. (2016). Biophysical analysis of a lethal laminin alpha-1 mutation reveals altered self-interaction. Matrix Biology, 49,

Journal Article Type Article
Acceptance Date Mar 27, 2015
Online Publication Date Jul 26, 2015
Publication Date Jan 1, 2016
Deposit Date May 10, 2017
Journal Matrix Biology
Print ISSN 0945-053X
Electronic ISSN 1569-1802
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 49
Keywords Analytical ultracentrifugation; CD spectroscopy; Dynamic light scattering; Extracellular matrix; Laminin short arms; Protein self-association; Surface plasmon resonance
Public URL
Publisher URL
Contract Date May 10, 2017