I am facing a serious issue to build pdbqt file. I am working with DncV enzyme and autodock gives me error page saying “cannot assign atomic type because there is no atomic number for ‘A A’” although I have deleted ALL hetero-atoms in my DncV enzyme pdb file. I am frustrated with “A A” as well. What will be the atom corresponding with “A A”? I have attached my DncV enzyme’s pdb file in this email.