Jmol users:

Two very simple additions may be of interest to some. See 
http://www.stolaf.edu/people/hansonr/jmol/test/proto/new.htm for examples.


(1) Super-fast solvent-accessible surfaces. (As defined by 
http://www.netsci.org/Science/Compchem/feature14e.html)

 spacefill +1.2

the plus sign indicates that we wish to draw the sphere "1.2 angstroms 
beyond the van der Waals radius", and this is VERY fast in Jmol.


(2) New select option for protein/nucleic acid sequences finds specified 
sequences.

You can now use one-character sequences in "within()" selection 
expressions.

 select within("[SEQUENCE"],(atom expression))

for example:

 select within("GGCTTTA",*); color red

 select within("AGCY",*.CA); color green

This should say what you think it says: "Select all the atoms in the 
sequence GGCTTTA" and "Select all the alpha carbons in the sequence 
"ala-gly-cys-tyr". -- sort of a substructure() command for biomolecules.

Interestingly, this syntax can equally well be read the other way: "Find 
all the sequences GGCTTTA in all the atoms" because it is really just an 
"and" operation. That's probably more what people might be interested 
in, I would think. In any case, both interpretations amount to the same 
thing.





Bob Hanson











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