Lys946, Thr943, Gln744, Arg747, Thr743, Ser289, Gln301, Val290, Lys291   
7.  Viscosalactone B  –7.6  2.69 µM  Gln987, Gln984, Leu983, Thr980, Asp976, Phe952, Gly981, Gln984,