B-DNA tour

B-form DNAB-form DNA

Most common DNA conformation in vivo Narrower, more elongated helix than A. Wide major groove easily accessible to proteins Narrow minor groove Favored conformation at high water concentrations (hydration of minor groove seems to favor B-form) Base pairs nearly perpendicular to helix axis Sugar pucker C2'-endo Start the tour with this view. Now look at this .The backbone is yellow and the bases are magenta. You can compare it with the other DNA forms by You may include any references to papers as in: the use of JSmol in Proteopedia or to the article describing Jmol to the rescue. Structural highlights This is a sample scene created with SAT to , and another to make of the protein. You can make your own scenes on SAT starting from scratch or loading and editing one of these sample scenes.

spinqualitylabelsall models B-DNA Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

ReferencesReferences

R. E. Dickerson, H. R. Drew, B. N. Conner, R. M. Wing, A. V. Fratini & M. L. Kopka (1982) The anatomy of A-, B-, and Z-DNA. Science 216: 475-485