Dear Users When I try to execute ramachandran plot analysis, I get the following note like "Dihedral around 5809,5816 not found in topology. Using mult=3" (nearly 30-40 dihedrals). What is it about? Input is just protein structure extended upto 150ns. -- *Regards,* *Rahul Suresh* *Research Scholar* *Bharathiar University* *Coimbatore*