Article
The natural mutation by deletion of Lys9 in the thrombin A-chain affects the pKa value of catalytic residues, the overall enzyme's stability and conformational transitions linked to Na+ binding.
The FEBS journal - 1 Jan 2006
De Cristofaro Raimondo, Carotti Andrea, Akhavan Sepideh, Palla Roberta, Peyvandi Flora, Altomare Cosimo, Mannucci Pier Mannuccio
Abstract excerpt
The catalytic competence of the natural thrombin mutant with deletion of the Lys9 residue in the A-chain (deltaK9) was found to be severely impaired, most likely due to modification of the 60-loop conformation and catalytic triad geometry, as supported by long molecular dynamics (MD) simulations in explicit water solvent. In this study, the pH dependence of the catalytic activity and binding of the low-molecular...
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