Finding intermodel H-bonds Finding intramodel H-bonds Constraints relaxed by 0.4 angstroms and 20 degrees Models used: #0 2nd1_B.cif H-bonds (donor, acceptor, hydrogen, D..A dist, D-H..A dist): GLN 11.A NE2 LYS 6.A O GLN 11.A HE21 2.772 1.990