NMRWish Built-In TCL Functions
dynGetAlpha: Get the alpha torsion angle CA(i-1) CA(i) CA(i+1) CA(i+2) for selected residues.

Flag Argument Default Description  -src ptrVal Source of Structure Data.  -res resList Residue ID List.  -chain cName Chain Name.  -seg sName Seg Name.  -round rVal Round Angles to Nearest rVal. Notes:   Alpha(i) Torsion is Defined by: CA(i-1) CA(i) CA(i+1) CA(i+2)