dear modellers, I want to make a 3 A harmonic distance restraint between these two atoms: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ATOM 464 CD GLU 56 -7.029 6.474 8.483 1.00130.43 1SG 465 ...... ATOM 545 CZ ARG 66 -13.040 -0.756 16.131 1.00255.28 1SG 546 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% But for the life of me, I can't get the syntax right inside the special_restraints subroutine. Can someone help me out? -Michael ------------------------------------------------------------------------ -------------------------- Michael Grabe, Ph.D. Post-doctoral Fellow Howard Hughes Medical Institute University of California, San Francisco 533 Parnassus Ave. San Francisco, CA 94143 mgrabe@itsa.ucsf.edu tel: ++ 415.476.6585 http://itsa.ucsf.edu/~mgrabe