> > must I do c10+c11+c12...c50? Yes, unfortunately. However, this long selection:
> select tails1, r. pop & n. > c17+c18+c19+c20+c21+c22+c23+c24+c25+c26+c27+c28+c29+c30+c31+ca 1+ca2+c36 > +c37+c38+c39+c40+c41+c42+c43+c44+c45+c46+c47+c48+c49+c50 Can be replaced with some Python code in your script: my_list = map( lambda x: "c%2d"%x, range(10,51) ) my_str = string.join( my_list, '+' ) cmd.select( "tails1", "resn pop & name " + my_str ) show lines, tails1 Which allows you to adjust the range manually by changing the values in the "range" call. FYI: print my_str gives c10+c11+c12+c13+c14+c15+c16+c17+c18+c19+c20+c21+c22+c23+c24+c25+c26+c27+c28+ c29+c30+c31+c32+c33+c34+c35+c36+c37+c38+c39+c40+c41+c42+c43+c44+c45+c46+c47+ c48+c49+c50 Cheers, warren > -----Original Message----- > From: pymol-users-ad...@lists.sourceforge.net > [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of > Robert Campbell > Sent: Thursday, April 15, 2004 8:39 AM > To: PyMol Users List > Subject: Re: [PyMOL] Selections > > Hi Jason, > > * Jason Vertrees <javer...@utmb.edu> [2004-04-14 22:55] wrote: > > Master Users, > > > > I'm a bit new to PyMol and still trying to master selections. I've > > read the documentation and played with quite a few > macromolecules now > > and still have some problems with selections. > > > > For example, I found a PDB online called 'pope.pdb' (a cool lipid > > bilayer; http://moose.bio.ucalgary.ca/Downloads/) and > simply wanted to > > select all the hydrophobic tails and hydrophilic heads so > that I may > > apply different attributes to each. If I need to select the tails, > > which in the PDB are labeled from C10 (or so) to C50 > depending on the > > molecule, can I use something like c10-c50 (experience > tells me no) or > > must I do c10+c11+c12...c50? > > The latter is correct, unfortunately. You can certainly do a > selection > like: > > select tails1, r. pop & n. > c17+c18+c19+c20+c21+c22+c23+c24+c25+c26+c27+c28+c29+c30+c31+ca 1+ca2+c36 > +c37+c38+c39+c40+c41+c42+c43+c44+c45+c46+c47+c48+c49+c50 > > (where I've wrapped the line) > > or you could do the shorter selection first: > > select heads, r. pop & n. > c5+c6+c12+c13+c15+c32+c34+n4+o7+o9+o10+o11+o14+o16+o33+o35+p8+h1+h2+h3 > > and then do: > > select tails2, r. pop &! heads > > If you don't want to go to the trouble of picking every atom > to see its name, just select one atom in the residue > (ctrl-middle-click) and show the atom name labels for the > residue (use the pkresi selection in the right menu and > labels are under "L") > > > So, it comes down to: do you prefer the macro method or > standard; and, > > do you have any hints or tips for more accurate or powerful > selections? > > As an example, how could I select just the tails or just > the heads in > > the aforementioned pope.pdb file? > > I found clicking on each atom to add them to the "lb" > selection as Michael suggests less simple, but then I type quickly! > > Cheers, > Rob > -- > Robert L. Campbell, Ph.D. > <r...@post.queensu.ca> > Senior Research Associate phone: > 613-533-6821 > Dept. of Biochemistry, Queen's University, fax: > 613-533-2497 > Kingston, ON K7L 3N6 Canada > http://adelie.biochem.queensu.ca/~rlc > PGP Fingerprint: 9B49 3D3F A489 05DC B35C 8E33 F238 A8F5 > F635 C0E2 > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IBM Linux Tutorials Free > Linux tutorial presented by Daniel Robbins, President and CEO > of GenToo technologies. Learn everything from fundamentals to > system > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > _______________________________________________ > PyMOL-users mailing list > PyMOL-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pymol-users >
