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The N-terminal globular domain of the laminin alpha1 chain binds to alpha1beta1 and alpha2beta1 integrins and to the heparan sulfate-containing domains of perlecan.

The N-terminal globular domain of the laminin alpha1 chain binds to alpha1beta1 and alpha2beta1 integrins and to the heparan sulfate-containing domains of perlecan.

Authors :
Ettner N
Göhring W
Sasaki T
Mann K
Timpl R
Source :
FEBS letters [FEBS Lett] 1998 Jul 03; Vol. 430 (3), pp. 217-21.
Publication Year :
1998

Abstract

The N-terminal domains VI plus V (62 kDa) and V alone (43 kDa) of the laminin alpha1 chain were obtained as recombinant products and shown to be folded into a native form by electron microscopy and immunological assays. Domain VI alone, which corresponds to an LN module, did not represent an autonomously folding unit in mammalian cells, however. Fragment alpha1VI/V, but not fragment alpha1V, bound to purified alpha1beta1 and alpha2beta1 integrins, to heparin, and to heparan sulfate-substituted domains I and V of perlecan. This localized the binding activities to the LN module, which contains two basic sequences suitable for heparin interactions.

Details

Language :
English
ISSN :
0014-5793
Volume :
430
Issue :
3
Database :
MEDLINE
Journal :
FEBS letters
Publication Type :
Academic Journal
Accession number :
9688542
Full Text :
https://doi.org/10.1016/s0014-5793(98)00601-2