Dear Bob,

> Maybe:
> REMARK    1 P2N format created by .... version:....... date:........

ok

> Did you say *I* decide? Please, *you* decide!

I just did not want to be pushy ;-)

> What about columns 67-76? They are available in the PDB spec.

just perfect

If I understand you, adding chemical elements is the best approach to  
avoid ambiguities in Jmol. If you do need chemical elements, adding  
them _after_ the second column of atom names is just perfect for us  
(because they will not be considered by R.E.D.).

If we look at the PDB format
http://www.wwpdb.org/documentation/format32/sect9.html

          1         2         3         4         5         6          
7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
ATOM      1  N   ALA A   1      11.104   6.134  -6.504  1.00  0.00           N

Consequently, if you agree we could use:
13 - 16        XXXX        Atom name.
70 - 73        YYYY        alternative name.
77 - 78        2 letters   Element symbol, right-justified
                             (to correctly display both atom name  
types in Jmol)
          1         2         3         4         5         6          
7         8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
ATOM      1 XXXX ALA     1      11.104   6.134  -6.504               YYYY    N

> So, back to the real question: Could Jmol read a second atom name?
>
> Answer is yes. Would you like to have the option to read just that second
> atom name, or do you need both atom names as available data? If the former,
> we'll use a FILTER on the load command for this:
>
> load xxx.pdb FILTER "altName"
> If the latter, we'll read it in as property_name.

Excellent... nothing else to say.

If we take as example:
http://cluster.q4md-forcefieldtools.org/~ucpublic1/javaappletpdb-1.html
We will be able to display:
- Atom names (as usual) &
- altName

We already have corrected the PDB format generated by R.E.D. IV/R.E.D.  
Server; we will update Ante_R.E.D. 2.0/R.E.D. Server concerning the  
P2N file format very quickly.

thanks for all Bob,

regards, Francois



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