PDEAS180 PATS186 VILA223 LIMVF236 YWFH238 VILA250 G251 G253 IVL254 FYL256 DNE257 G259 G260 LIV263 MLIV269 MLFYIV272 DENSG275 G278 AGS280 NDSG307 VIL319 G325 IVL330 DNES334 G337 RK338 LIVMF339 LMIVF341 DEN343 LIVMF345 PAV354 AGS361 TS362 LIVMF363 TSA364 G365 G372 ED398 DEN420 AGS437 LIVFM441 WYFH453 H455 D457 # found 44 key residues