Yes, it very well could be, the distance is pretty typical for this kind of
weak, "non-cannonical" hydrogen bond. However, directionality is an
important aspect of hydrogen bonding and its hard to say if this is a
reasonable bond without a (small filesize so no one's inbox gets
overloaded)
Dear CCP4bb,
I recently solved the 2.0 Å crystal structure of a small hydrophobic
molecule bound to a protein. A glutamine sidechain nitrogen is positioned
~3.3-3.4 Å from a double bond in the small molecule acyl chain. Could this
be a similar interaction to the X-H (where X-H is an H-bond
