7sow A 1.3 BS01 rna B 0 Y336 Y337 D346 F348 L349 F367 H368 R369 Y21 Y22 D31 F33 L34 F52 H53 R54 ? Q6PKG0 -4 ~ -1 HHHHHHSQELLKDYIKRQIEYYFSVDNLERDFFLRRKMDADGFLPITLIASFHRVQALTTDISLIFAALKDSKVVEIVDEKVRRREEPEKWPLPP