© 2015 by Zenobia Therapeutics Inc

July 20, 2017

What is Crystallographic Screening?

Crystallographic screening is a method used to detect ligands that bind to a target protein. What makes this metod special is that it also provides structural data about the binding location and interactions between the ligand and protein. The crystal itself has the protein molecules lined up in an ordered array with large solvent channels so that ligands can soak in and bind to sites on the crystallized protein. This method is exceptionally successful in detecting weakly binding ligands because the protein is highly concentrated in the crystal. Once the crystal has been soaked in the cocktail of ligands, diffraction data are collected and used to calculate an electron density map to determine if any of the ligands bound to the protein. If they do bind, one can tell by a visible positive electron density peak in a difference density map between the putative ligand protein complex and apoprotein. The ligand cocktails should be designed so that each lig...

March 4, 2016

 

 As fragment screening continues to grow in popularity and establish itself as an integral part of discovery research, the emergence of more and more compounds added to fragment library collections seems to grow exponentially. What once was an efficient means of effectively screening a target to provide information about its drugability or identify the unique building blocks of a clinical candidate, has now become diluted in a pool of tens or hundreds of thousands of compounds to endlessly screen.

 

Designing efficiency into any application should be one of the primary principles and only be modified when expanded scope adds additional information. When this simple required element is ignored or modified to adapt to an ever changing landscape of discovery research, the other primary principle that appears to be compromised is value. Value is the true measurement of success. The simplicity of design directly relates to the elegance of its footprint, regardless of its true complexity, an...

Please reload

Featured Posts

Diversity Series, Part 3

February 27, 2017

1/3
Please reload

Recent Posts

February 27, 2017

February 1, 2017