<div dir="ltr"><p style="margin:0px;padding:0px;word-wrap:break-word;color:rgb(23,43,77);font-family:-apple-system,system-ui,"Segoe UI",Roboto,Oxygen,Ubuntu,"Fira Sans","Droid Sans","Helvetica Neue",sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:-0.07px;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Hi</p><p style="margin:12px 0px 0px;padding:0px;word-wrap:break-word;color:rgb(23,43,77);font-family:-apple-system,system-ui,"Segoe UI",Roboto,Oxygen,Ubuntu,"Fira Sans","Droid Sans","Helvetica Neue",sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:-0.07px;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">I have two protein subunits, which I have aligned along the z-axis. I am considering both the subunits as rigid bodies. Is there a way I could find the screw transformation (rotation along z-axis and displacement along xy plane) between them in chimera ?</p><p style="margin:12px 0px 0px;padding:0px;word-wrap:break-word;color:rgb(23,43,77);font-family:-apple-system,system-ui,"Segoe UI",Roboto,Oxygen,Ubuntu,"Fira Sans","Droid Sans","Helvetica Neue",sans-serif;font-size:14px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:-0.07px;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial">Thank you for your help.</p><br></div>