2C9T:
reference: Structural determinants of selective alpha-conotoxin binding to a nicotinic acetylcholine receptor homolog AChBP., Ulens C, Hogg RC, Celie PH, Bertrand D, Tsetlin V, Smit AB, Sixma TK, Proc Natl Acad Sci U S A. 2006 Mar 7;103(10):3615-20. Epub 2006 Feb 27. PMID: 16505382

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