Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.

Netiquette · Download · News · Gallery · Homepage · DSSR Manual · G-quadruplexes · DSSR-Jmol · DSSR-PyMOL · DSSR Licensing · Video Overview· RNA Covers

Messages - erikbike

Pages: [1]
RNA structures (DSSR) / 1ffk missing nucleotides?
« on: May 21, 2015, 08:19:56 pm »
Hi Xiang-Jun,

I am comparing the structures output by DSSR to those in FRABASE.  For the structure 1ffk, the DSSR output contains something like:


The structure in FRABASE for this same regions shows:


Note the CUA that is missing from DSSR's output.  It appears that DSSR is dropping the nucleotides between chains.  Therefore the whole chain output is incomplete if ampersands (&) are removed.

Is there a way to have DSSR output the whole sequence with missing nucleotides separated by "-" characters, as in the output from FRABASE?


RNA structures (DSSR) / Re: 1h1k secondary structure
« on: May 21, 2015, 11:59:23 am »
Hi Xiang-Jun,

Thank you for the thorough reply.

One related question:  When specifying --nest, is this equivalent to replacing all {}, <>, etc. with "." in the DBN?  Or does --nest do something more complicated?

Thanks again,

RNA structures (DSSR) / 1h1k secondary structure
« on: May 21, 2015, 07:36:56 am »
I am trying to understand the secondary structure for PDB 1h1k [whole chain].  This is a series of A's followed by U's.  When I compute the structure with DSSR, it looks something like:


I think that this indicates there is a pseudo-knot.

If the option --nest is added, the structure looks something like:


I expected the structure in both cases to look something like:


I suspect that this has something to do with the fact that the structure is split into multiple chains.

The actual outputs are attached.  I am using DSSR v1.2.6-2015mar28.

I would appreciate if the structures could be explained, so that I can better understand the outputs in this case.

Thanks, Erik

Pages: [1]

Created and maintained by Dr. Xiang-Jun Lu [律祥俊] (
The Bussemaker Laboratory at the Department of Biological Sciences, Columbia University.