3PIX: Crystal Structure Of Btk Kinase Domain Complexed With 2-Isop (4-Methyl-Piperazin-1-Yl)-4-(5-Methyl-2h-Pyrazol-3-Ylamino) Phthalazin-1-One
reference: Insights into the conformational flexibility of Bruton's tyrosine kinase from multiple ligand complex structures., Kuglstatter A, Wong A, Tsing S, Lee SW, Lou Y, Villasenor AG, Bradshaw JM, Shaw D, Barnett JW, Browner MF, Protein Sci. 2011 Feb;20(2):428-36. doi: 10.1002/pro.575. PMID: 21280133

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