format of the pdb -- May 21, 2012 - 11:45

Dear all, i tried to test both the windows based and mac based relax programs and used the sphere for modelfree analysis, it worked alright but would like to test my small data set, i have already r1,r2 and noe at two fields but would like to know how to input the pdb so that vectors can be extracted.

i get a message like this

"RelaxWarning: Cannot find the atom in the structure (atom ID ':433@1&@N').
RelaxWarning: Cannot find the atom in the structure (atom ID ':434@12&@N')."

etc----

Jimmy.