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2015 ; 12
(5
): 457-67
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Unlocking the secrets to protein-protein interface drug targets using structural
mass spectrometry techniques
#MMPMID26400464
Dailing A
; Luchini A
; Liotta L
Expert Rev Proteomics
2015[]; 12
(5
): 457-67
PMID26400464
show ga
Protein-protein interactions (PPIs) drive all biologic systems at the subcellular
and extracellular level. Changes in the specificity and affinity of these
interactions can lead to cellular malfunctions and disease. Consequently, the
binding interfaces between interacting protein partners are important drug
targets for the next generation of therapies that block such interactions.
Unfortunately, protein-protein contact points have proven to be very difficult
pharmacological targets because they are hidden within complex 3D interfaces. For
the vast majority of characterized binary PPIs, the specific amino acid sequence
of their close contact regions remains unknown. There has been an important need
for an experimental technology that can rapidly reveal the functionally important
contact points of native protein complexes in solution. In this review,
experimental techniques employing mass spectrometry to explore protein
interaction binding sites are discussed. Hydrogen-deuterium exchange, hydroxyl
radical footprinting, crosslinking and the newest technology protein painting are
compared and contrasted.