4p1u A 2.52 BS01 21G A 1 F23 H57 E61 F63 K76 F104 Q106 M131 F3 H37 E41 F43 K56 F84 Q86 M106 ? -logKd/Ki=8.52, Kd<0.003uM P31345 25019388 4000 SSFSFGGFTFKRTSGSSIKREEEVLTGNLQTLKIRVHEGYEEFTMVGKRATAILRKATRRLVQLIVSGKDEQSIAEAIIVAMVFSQEDCMIKAVRGDLNFVNLNPMHQLLRHFQKDAKVLFQNWGIEHIDNVMGMVGVLPDMTPSTEMSMRGIRVSKM