at 4.20p EDT on 2003 December 12 Friday Miguel Howard said: > > the end result troubles me a little. if I understand you correctly, two > > adjacent helices would be shown essentially as one "bent" > > representation? > > Actually, that isn't quite true. Let me explain. > > The shape I am using for a cartoon is a little *rocket* with a cap on it. > The tip of the rocket would be in the center of the base of the next > rocket. So it would continue to look like two helices. > oh. I envisioned the helix as a solid cylinder.
> > this concerns me because it implies (visually) a bent helix, and it > > isn't - it's two different helices. > OK > > > the backbone must pass though some > > sort of transition to get from one helix to another, even if that > > transition is only a few atoms (say carbonyl of one residue to amine of > > the next). > Well, 1KYZ has it going directly from one helix to the next. Presumably > the angle of the helix led them to believe that they were/are two separate > helices butted together. > > > it is important to visually acknowledge that transition, in > > my opinion. otherwise, students may assume that the regular hydrogen > > bonding pattern of the helix (n to n+4) extends through the "bent" > > region. which, if you look at the perpendicular helices in 1kyz, is > > obviously not possible. > I don't know what you mean by 'perpendicular helices'. > from Jan: at 2.43p EDT on 2003 December 12 Friday Jan Reichert said: > > you could have two helix structures perpendicular to each other > http://www.imb-jena.de/cgi-bin/SCOPlnk.exe?CHIME=y&JMOL=1kyz > px73317 > the structures in question are 267-271e 272-287e regards, :tim -- timothy driscoll molvisions - molecular graphics & visualization <http://www.molvisions.com/> usa:north carolina:wake forest ------------------------------------------------------- This SF.net email is sponsored by: IBM Linux Tutorials. Become an expert in LINUX or just sharpen your skills. Sign up for IBM's Free Linux Tutorials. Learn everything from the bash shell to sys admin. Click now! http://ads.osdn.com/?ad_id=1278&alloc_id=3371&op=click _______________________________________________ Jmol-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jmol-users
