Figure 1.
Structural elements of yeast pol II critical for α-amanitin action. From the structure of the yeast pol II elongation complex bound to α-amanitin (2VUM)3: located within mobile Trigger Loop (cartoon, blue) are His1085 (sticks, pink) making H-bonds with α-amanitin (sticks, yellow)2,3, and Leu1081 (sticks, orange) “wedging” into Bridge Helix (cartoon, green)3.