Hi,
Wizard -> Measurement
Measurement mode: Neighbours -> In Other Objects.
Then select one of the proteins and all contacts with the other will be rendered.
You can also use on the side menu a->find->any contacts->between chains with 3.0A
The only disadvantage about that is, that it may also show you connections within your docked proteins if they are made out of multiple chains.
The docking structure is not reliable. You cannot use them to analyze the protein-ligand interaction. This is already unacceptable in modern computational community.
For best result of interacting residue use Discovery Studio 2020.It shows results in both 2D and 3D format
In PyMol
>>>use interfaceResidues (http://www.protein.osaka-u.ac.jp/rcsfp/supracryst/suzuki/jpxtal/Katsutani/en/interface.php) command if you have docked product having two chains (i.e the docking has product of two proteins as same sequence).
>>>if you found docking results with separate sequence (like from Cluspro), combine the two protein first. for this go to action of one protein and select "copy to object" and copy it to other protein. after that run the interfaceResidues command mention above.
>>> use list_hbond command to see hydrogen bonding between two
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