Force not acting in an enzyme substrate complex:
Van der waals force are very weak. So not involved in the formation of enzyme substrate complex. Ref: A Textbook of Science for The Health Professions By Barry G ; Evaluation of Enzyme Inhibitors in Drug Discovery: A Guide for Medicinal Chemists and Pharmacologists By Robe Allen Copeland, Page 23 ; Textbook of Biochemistry By Thomas M.Devlin, 4th Edition, Page 156
Electrostatic
Covalent
Van der waals
Hydrogen