21. Stiction may be related to hydrogen bonding or residual contamination. 22. The conserved residues Lys204, Asn205, Asp260 and Thr264 form a stable hydrogen bonding network. 23. Protein protein interactions also exist to hold structure together by electrostatic and hydrogen bonding interactions. 24. Heavy water ) and the strength of hydrogen bonding . 25. Although possibly related to hydrogen bonding , a ball is similarly related to a ball park. 26. Conformational changes cause His 11 to rotate, partially aided by hydrogen bonding to His 188. 27. The ?-amino group often participates in hydrogen bonding and as a general base in catalysis. 28. Four polymorphs of Piracetam exist that involve hydrogen bonding of the carbonyl and primary amide. 29. With certain polar substituents, hydrogen bonding can occur in the allylic system between the substituents. 30. Hydrogen bonding patterns in secondary structures may be significantly distorted, which makes STRIDE, SST ).
