4TY8:
reference: A ligand-observed mass spectrometry approach integrated into the fragment based lead discovery pipeline., Chen X, Qin S, Chen S, Li J, Li L, Wang Z, Wang Q, Lin J, Yang C, Shui W, Sci Rep. 2015 Feb 10;5:8361. doi: 10.1038/srep08361. PMID: 25666181

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