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i put the tpr file as input to generate the index file but cannot able to select the atom type , when i use the t to specify CA its shows 0 atom found in the selection.
What force field are you using? Only a few use CA as a valid atom type. Note that atom type is entirely different than atom name.
sir force field i used is OPLS , i solved that issue but facing the another one i want to rotate the gamma subunit alone it is rotationg but with 6 hexamer subunits it is unable to rotate … i used restraint of 1500 on first 5 resiudues of atp synthase