Hello Sudakshina--
> I was trying to construct a self-complimentary DNA structure in
> Xplor by using sequence. However, I cannot understand where exactly
> to put the chain and segment IDs to generate two separate chains in
> the seq.txt file. Since I am very new to Xplor, can anyone please
> help me out? Thanks a lot.
You have some options here. If you wish to have different segids and
use the seq2psf helper, you will need to run it twice specifying a
different -segname option and complimentary seq.txt files, and then
load both PSFs in your refinement script. To generate a single PSF
with different segids, you will want to write a little script along
the lines of eginput/PSF_generation/genDNA24bp.py:
import psfGen
psfGen.seqToPSF('s1.seq',seqType='dna',startResid=1,segName='A')
psfGen.seqToPSF('s2.seq',seqType='dna',startResid=1,segName='B'))
xplor.command("write psf output=new.psf end")
Additional bits might be added to generate initial coordinates. Note
that the sequence file should not contain segid specifiers.
best regards--
Charles
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