4i53 A 2.5002 BS01 1C1 A 1 S256 E370 S375 F376 I424 N425 M426 W427 E429 V430 G431 G473 M475 S135 E224 S229 F230 I275 N276 M277 W278 E280 V281 G282 G318 M320 ? 0019031 Kd=110nM C6G099 23667716 501 KTTLFCASDAKAYEKEVHNVWATHACVPTDPNPQEMVLANVTENFNMWKNDMVEQMHEDIISLWDESLKPCVKLTGGSAITQACPKVSFDPIPLHYCAPAGFAILKCNNKTFNGTGPCRNVSTVQCTHGIKPVVSTQLLLNGSLAEEEIIIRSENLTNNAKTIIVHLNESVNIVCTRPNNIRQAHCNINESKWNNTLQKVGEELAKHFPSKTIKFEPSSGGDLEITTHSFNCRGEFFYCNTSDLFNGTYRNGTYNHTGRSSNGTITLQCKIKQIINMWQEVGRAIYAPPIEGEITCNSNITGLLLLRDDTETFRPGGGDMRDNWRSELYKYKVVEI