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Opened 7 years ago
Closed 6 years ago
#1814 closed defect (duplicate)
missing cartoon tethers to nucleotides
| Reported by: | Greg Couch | Owned by: | Conrad Huang |
|---|---|---|---|
| Priority: | major | Milestone: | 0.9 |
| Component: | Graphics | Version: | |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Notify when closed: | Platform: | all | |
| Project: | ChimeraX |
Description
Repeat by opening 2bna and switching all atoms with "nuc atoms" and see that sugars are not tethered to the ribbon anymore.
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It's not the tethers that are missing. It's the C5'-C4' and O3'-C3' bonds. For the protein analog, CA is a backbone atom but CB is not, so the CA-CB bond is displayed and the sidechain is connected to the cartoon.
The C5'-C4' and O3'-C3' bonds are not displayed because all four atoms are "backbone" atoms (try selecting "backbone" from Select->Structure menu). Both C5' and O3' are close enough to the ribbon that there are no tethers for them anyway. I vaguely recall that we had tethers to all the backbone atoms at one point and changed it because it looked too busy with multiple tethers per residue. I cannot recall why C3' and C4' are marked as backbone, but there was some reason. Not sure what the right solution is.