Dear all,

using the latest prerelease version of jmol,    prerelease 11.6.RC15, I have 
questions on two issues that I've found difficult for a while:

1) (minor) For two initially unconnected atoms,

connect (atomno=70) (atomno=111) hbond orange radius 0.05

does not work.

Doing first 

connect (atomno=70) (atomno=111) hbond

and then 

connect (atomno=70) (atomno=111) hbond orange radius 0.05

produces the desired result. Any reason why the original command does not work 
out of the box?


2) Regarding cartoons (ribbons etc) - I have found it excessively tedious to 
get a ribbon into what is obviously a helix in a structure of mine. Doing 
this based on an xyz file is obviously impossible. Converting first to a .pdb 
file, then hand-editing the pdb file to get CA's and CB's right gets the 
ribbon for me correctly in one structure, but not in another (exactly same 
procedure).

Questions: 

What exact information does jmol even require to safely produce a ribbon? For 
me, this was a rather frustrating "guessing in the dark experience. 
Empirically, it's

- a pdb file
- numbered residues, perhaps their names
- correctly specified CA's and CB's 
- ??? what else?

Is there any reason why a ribbon should not be producable by "simply" 
specifying the atoms to be connected from within jmol itself? Having such a 
feature available would be a great help ....


thanks & best wishes
V. Blum

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