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Flexpepdock I_hb scoring term

Category: 
Docking

I am attempting to dock a peptide onto a protein using flexpepdock. The docking completes and the identified structures are plausible solutions. However, when I examine the score.sc file, I notice that the I_hb term has a single, extremely high value for all structures:

I_hb = 18446744073709551616.000

I am prepacking the structure before docking:

FLEXPEP -s PEPTIDE.pdb -flexpep_prepack -ex1 -ex2aro -overwrite

FLEXPEP -s PEPTIDE_0001.pdb -pep_refine -ex1 -ex2aro -nstruct 100 -lowres_preoptimize -native PEPTIDE_0001.pdb

Post Situation: 

Pocket Constraint

Category: 
Constraints

Hi,

I was wondering if anyone has any experience using the pocket constraint in PyRosetta. There doesn't appear to be much documentation and all of my attempts have yielded the error "ERROR ! ! Invalid residue to backrub around" after running the following code:

from pyrosetta import *
init()

from pyrosetta.rosetta.core.scoring import *

pose = pose_from_pdb('core_0001.pdb')

scorefxn = create_score_function('ref2015')
scorefxn.set_weight(pocket_constraint, 1.0)

Post Situation: 

RosettaCM density guided rebuilding methodology

Category: 
Structure prediction

In this publication here, the comparative model algorithm of rosetta is explained: 

https://www.sciencedirect.com/science/article/pii/S0969212613002979#app2

However, in case of having a density to guide the model completion, how does the density factor in this algorithm? 

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How to make FastRelax use smaller number of rotamers from PyRosetta app?

Category: 
PyRosetta

I am using FastRelax from PyRosetta. When I run it from PyRosetta, the number of rotamers built are way more than the number of rotamers when I run it with C++ relax binary. For instance: I use the following to relax a pdb with movemap in PyRosetta as follows:

def relax_pdb_with_movemap(self, pose, movemap):
        relax = FastRelax()
        relax.set_scorefxn(get_fa_scorefxn())
        relax.set_movemap(movemap)
        relax.apply(pose)
        return pose

In C++ I give the following command:

Post Situation: 

Do Rosetta support hydroxide(OH-) and oxide(O2-) params?

Category: 
Enzyme Design
Small Molecules
Chemically Modified Residues

Hello All,

For one of my project I need to hydroxide (OH-) and oxide (O2-). EnzDes is failing to take it. 

Error: caught exceptionFile: src/numeric/xyzVector.hh:665Cannot normalize xyzVector of length() zero

Oxide Params
 

Post Situation: 

New Python 3.7

Category: 
Compilation

Hello developers,

 

Just letting you know that there is a new python version (3.7) released and PyRosetta does not work in it. I use Arch based linux so I discover these things very early, just want to send you a notification here incase you feel you need to provide PyRosetta in python 3.7

 

I hope this helps.

Post Situation: 

ab initio struction prediction

Category: 
Structure prediction

hello

i want to predict denovo structure of a protein but at last step i get this error

opt/rosetta_src_2018.09.60072_bundle/main/source/bin/minirosetta.default.linuxgccrelease: error while loading shared libraries: libsqlite3.so: cannot open shared object file: No such file or directory

should i download libreries ? because i installed just rosetta with no library  please help me

Post Situation: 

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