29907
However , as in reality both electrostatic forces and torques act on proteins , and these forces and torques depend on protein - protein distance and the relative orientation of binding partners , we investigated also more realistic situations employing continuum electrostatics calculations based on atomistic proteins models .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None