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. Author manuscript; available in PMC: 2009 Oct 2.
Published in final edited form as: Nature. 2009 Mar 1;458(7237):534–537. doi: 10.1038/nature07768

Figure 1.

Figure 1

The binding site of AChBP, thought to resemble that of nAChRs. Shown are the four principal “loops” that define the binding site2. Also highlighted are TrpB (149) studied here; its backbone carbonyl (green star); and the α carbon on position 153, which has also been mutated here. Note that loop C contributes two aromatic residues; the other loops each contribute one. Image is of pdb file 1I9B10.