B-DNA tour: Difference between revisions
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==B-form DNA== | ==B-form DNA== | ||
<StructureSection load='1bna' size='400' side='right' caption='B-DNA' scene='72/725442/B-dna_overview/2'> | <StructureSection load='1bna' size='400' side='right' caption='B-DNA [[1bna]]' scene='72/725442/B-dna_overview/2'> | ||
Source <ref>PMID:7071593</ref> | Source <ref>PMID:7071593</ref> | ||
== Structural highlights == | == Structural highlights == | ||
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Now change the display to make it show the <scene name='72/725442/Space_filling_bbone/2'>sugar-phosphate backbone as pseudo-bonds</scene> connecting the phosphate atoms. Now the bases are easier to see. Notice how they are stacked upon each other and are nearly perpendicular to the axis of the double helix. Note also that the backbone forms a smooth, continuous curve. | Now change the display to make it show the <scene name='72/725442/Space_filling_bbone/2'>sugar-phosphate backbone as pseudo-bonds</scene> connecting the phosphate atoms. Now the bases are easier to see. Notice how they are stacked upon each other and are nearly perpendicular to the axis of the double helix. Note also that the backbone forms a smooth, continuous curve. | ||
You can <scene name='72/725442/Zoom_pairs/1'>look at just four of the base pairs.</scene>.You are looking into the major groove and the colors of the base pairs alternate. You can also <scene name='72/725442/Zoom_pairs_only/1'> | You can <scene name='72/725442/Zoom_pairs/1'>look at just four of the base pairs.</scene>.You are looking into the major groove and the colors of the base pairs alternate. You can also <scene name='72/725442/Zoom_pairs_only/1'>look at just the bases</scene>. | ||
Each base pair stacks on the next similarly, as shown from <scene name='72/725442/Zoom_pairs_top/1'>this top view</scene>. This is the <scene name='72/725442/Zoom_pairs_only_top/1'>same top view of just the bases</scene>. A-form DNA also stacks in this way, but compare this with Z-DNA, which behaves much differently. | Each base pair stacks on the next similarly, as shown from <scene name='72/725442/Zoom_pairs_top/1'>this top view</scene>. This is the <scene name='72/725442/Zoom_pairs_only_top/1'>same top view of just the bases</scene>. A-form DNA also stacks in this way, but compare this with Z-DNA, which behaves much differently. | ||
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</StructureSection> | </StructureSection> | ||
==See Also== | ==See Also== | ||
* [[Z-DNA model tour | * My [[Z-DNA model tour]] | ||
* [[A-RNA tour]] | * My [[A-RNA tour]] | ||
* A more general overview will be found at [[DNA]]. | * A more general overview will be found at [[DNA]]. | ||
* [[Z-DNA]] | |||
* [[Forms of DNA]] shows a side-by-side comparison of A, B, and Z forms of DNA. | * [[Forms of DNA]] shows a side-by-side comparison of A, B, and Z forms of DNA. | ||
* An interactive tutorial on [http://dna.molviz.org DNA Structure], ''disponible también en español'' and eight other languages. | * An interactive tutorial on [http://dna.molviz.org DNA Structure], ''disponible también en español'' and eight other languages. | ||
