Serendipitous alkylation of a Plk1 ligand uncovers a new binding channel.
Liu, F., Park, J.E., Qian, W.J., Lim, D., Graber, M., Berg, T., Yaffe, M.B., Lee, K.S., Burke, T.R.(2011) Nat Chem Biol 7: 595-601
- PubMed: 21765407 
- DOI: 10.1038/nchembio.614
- Primary Citation of Related Structures:  
3RQ7 - PubMed Abstract: 
We obtained unanticipated synthetic byproducts from alkylation of the δ(1) nitrogen (N3) of the histidine imidazole ring of the polo-like kinase-1 (Plk1) polo-box domain (PBD)-binding peptide PLHSpT. For the highest-affinity byproduct, bearing a C(6)H(5)(CH(2))(8)- group, a Plk1 PBD cocrystal structure revealed a new binding channel that had previously been occluded ...