4xt2 C 1.698 BS01 43L C 1 H248 M252 F254 A277 Y281 M289 S292 H293 L296 V302 S304 Y307 M309 G323 H13 M17 F19 A42 Y46 M54 S57 H58 L61 V67 S69 Y72 M74 G88 ? Kd=63nM Kd=63nM, IC50=112nM Q99814 26226049 401 FKGLDSKTFLSEHSMDMKFTYCDDRITELIGYHPEELLGRSAYEFYHALDSENMTKSHQNLCTKGQVVSGQYRMLAKHGGYVWLETQGTVIYNPRNLQPQCIMCVNYVLSEIEK