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Looking for a pdb....

Category: 
Structure prediction

Hi,

Sorry for the newbie question, but I'm looking for some pdb's to practice packing methodologies on. This will be packing only to start with, not design, and I'm looking for a locked backbone, ( I've seen a function somewhere in the docs for this), and just perturbing the side chains exactly like in this video http://www.youtube.com/watch?feature=player_detailpage&v=_SDHZ-jxP4o....

Post Situation: 

How to only constructure the tail conformation when using "FloppyTail.linuxgccrelease"?

Category: 
Structure prediction

Dear friends,
I am trying to use FloppyTail to determine a C-terminus tail structure of 6 consecutive His residues. However, several residues before the tail also experience conformation change though the majority is remained the same. Can I ask is there a way to only optimise the tail structure?

Post Situation: 

Use "loopmodel.linuxgccrelease" CCD to build missing residue positions

Category: 
Structure prediction

Dear friends,
I am trying to use the loopmodel ccd to build a loop region with missing residue positions in the original PDB file.

The whole sequence is of 228 amino acid and the missing region is 223-228.

Can I ask
1) As the loop to be built is at the end of the sequence (i.e. termini), how can I specify the loop file?

If I use "LOOP 222 228 0 0 0", I was told (ccd_1.log attached):
"core.kinematics.FoldTree: FoldTree::reorder( 1 ) failed, new/old edge_list_ size mismatch"

Post Situation: 

"OSError: [Errno 2]” in “clustering.py”

Category: 
Structure prediction

Dear friends,
I am trying to use "clustering.py" but I was told "OSError: [Errno 2] No such file or directory". Can I ask how to solve this?

I am sorry but it seems I have been asking technical questions all the time. Please tell me if there is something I can read to prepare my knowledge to debug. For example, how can I actually debug this python problem based on the error message?

Thank you very much.

Yours sincerely
Cheng

The following is the command line and prompt.

Post Situation: 

ERROR:: Exit from: src/core/fragment/ConstantLengthFragSet.cc line: 116

Category: 
Docking

Dear all,
when I run the ab_initio Flexpepdock protocol, I got this error :src/core/fragment/ConstantLengthFragSet.cc line: 116
Can someone give me some comments?
this is my flag:
-s eq_1_0001.pdb
-database /home/tuongvy/SW/rosetta3.4/rosetta_database

-out:file:silent decoys.silent
-out:file:silent_struct_type binary

-pep_refine
-lowres_abinitio
-rep_ramp_cycles 10

-ex1
-ex2aro
-use_input_sc
-constant_seed
-jran 12456

-frag3 ../NullFragments0/output_files/frags.200.3mers

Post Situation: 

residues_patch_selectors CENTROID_HA

Category: 
Docking

Hi Rosetta guys:)
Question about seemingly odd behaviour going from local rosetta run (rosetta_2014.16.56682_bundle) to mpi (2014.20.56383.mpi) and of course a slightly newer version of Rosetta3.5 though both are 3.5.

My normal docking scripts contains the flag
-residues:patch_selectors CENTROID_HA

this script runs smoothly.
When running on mpi I can do regular docking, but when introducing this flag (need it for SAXS runs), rosetta tells me that there is no such command on the top level.

Post Situation: 

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