Molecular dynamics of the Bacillus subtilis expansin EXLX1: interaction with substrates and structural basis of the lack of activity of mutants.

Abstract excerpt

Expansins are disruptive proteins that loosen growing plant cell walls and can enhance the enzymatic hydrolysis of cellulose. The canonical expansin structure consists of one domain responsible for substrate binding (D2) and another domain (D1) of unknown function, but essential for activity. Although the effects of expansins on cell walls and cellulose fibrils are known, the molecular mechanism underlying their...

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