Last modified on 21 May 2001.

Figure 4. Stereo views of A:G base-pairs stacked at ends of adjacent helices with G 3' to helix end (the A:G base-pair is shown in blue). Images were created with INSIGHT II. (a) sheared A:G base-pair (G1056:A1103) from the 23 S rRNA L11 domain (Conn et al., 1999; 1QA6). (b) imino A:G base-pair (G162:A143) from the hepatitis delta virus ribozyme (Ferre-D'Amare et al., 1998; 1DRZ).