From: jr <jr...@im...> - 2004-05-03 14:34:21
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timothy driscoll wrote: > Miguel sent (2004.05.03 at 2.44p [+0200gmt]) : > > >Tim wrote, > > > >>IIRC, neither Rasmol nor Chime draw cartoons for structures that > >>have only alpha-carbons. this includes trace, ribbons, strands, > >>and cartoon. but both RasMol and Chime draw backbone with *.CA protein structures and I think there is no reason why protein renderings which are only based on *.CA should not be drawn by Jmol e.g. trace. > > > > >Q: How many files are out there that have alpha-carbons only? > > > quite a few - I don't have exact numbers. me too, I guess less than 1%, which are about 250 structures e.g. | code | resolution | method | creation | +------+------------+-------------+------------+ | 1a1d | 99.99 | NMR | 1997-12-10 | | 1a1q | 2.4 | diffraction | 1997-12-12 | | 1aat | 2.8 | diffraction | 1982-04-23 | | 1abn | 2.4 | diffraction | 1992-09-03 | | 1ae4 | 2.4 | diffraction | 1997-03-05 | | 1ags | 2.5 | diffraction | 1995-01-23 | | 1ain | 2.5 | diffraction | 1992-06-03 | | 1alm | 99.99 | model | 1997-05-31 | | 1anp | 99.99 | NMR | 1994-04-06 | > > > >Q: Why do they exist? > > > resolution limitations or file size issues. ancient files, resolution limitations and especially model structures . Regards, Jan |