Dear fellow Xtallographers. I love Molprobity, but I have to say this did make me chuckle (see attached jpeg file). Who needs hydrogens? Tony. --- Dr Antony W Oliver Senior Research Fellow CR-UK DNA Repair Enzymes Group Genome Damage and Stability Centre Science Park Road University of Sussex Falmer, Brighton, BN1 9RQ email: [log in to unmask]<mailto:[log in to unmask]> tel (office): +44 (0)1273 678349 tel (lab): +44 (0)1273 677512