3qxv A 2.5 BS01 MTX A 1 V4 A26 S30 S31 W34 M36 R74 N76 Y79 L80 V81 V1 A23 S27 S28 W31 M33 R71 N73 Y76 L77 V78 Kd=5nM -logKd/Ki=8.40, Kd=4nM 21557375 2000 VQLVESGGGLVQAGGSLRLSCAASRRSSRSWAMAWFRQAPGKEREFVAKISGDGRLTTYGDSVKGRFTISRDNAEYLVYLQMDSLKPEDTAVYYCAADDNYVTASWRSGPDYWGQGTQVTVSS