Abstract:

Acalabrutinib is an inhibitor of Bruton's tyrosine kinase (BTK) activity and prevents the activation of the B-cell antigen receptor (BCR) signaling pathway. For having these properties acalabrutinib recently was approved for medical use as an anticancer drug. Determining the conformational properties of a bioactive molecule is necessary to reveal its bioactivity. For this reason, the conformational states of the acalabrutinib were examined first. The AM1, a semi-experimental method, was used to examine the stable conformations of the acalabrutinib molecule. Nine lowest energy conformers of the acalabrutinib molecule were determined and their relative energies were calculated. Afterwards, the interactions of the most stable conformer of acalabrutinib with DNA and integrin were examined by docking simulations, and the most active interaction sites and binding affinities were determined.