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Dear all,<br>
<br>
I used the command sel @N1 @N3 to select the N1 and N3 atoms of a
nucleic acid structure (like 1bna).<br>
<br>
when I do "show only" in Actions / Atoms&Bonds, a specific
representation is displayed as in the image below: sticks connect N1
atoms of one strand and N3 atoms of the other strand. <br>
<br>
May you tell me the meaning of this representation and how can I
modify it (I mean, how to change the type of atoms to be connected)?<br>
<br>
In fact, I would like to visually apprehend the helical axis. Is
there a way to calculate and display this axis in Chimera?<br>
<br>
Many thanks for your help<br>
<br>
Damien<br>
<br>
<img src="cid:part1.07030200.09030604@fourmentinguilbert.org" alt=""><br>
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