Dear Users,

My polypeptide has 90 residues. I divided them into 5 type of beads. For 
example lets take the example of basic residues (type B) - I have Lysine, 
Arginine and Histidine and acidic (A) only one Aspartic Acid and one 
Glutmaic acid so two in total.  I wish to assign different mass to each of 
them but they belong to the one type.

How I can I specify this in gromacs topology so Votca will calculate RDF 
after each step between e.g. A and B? 


Another issue: potential between Acidic - Acidic. As i have two Acidic 
residues only I specify RDF between A1 and A2. But then Votca will 
calculate RDF between A-A so twoA-twoA which I do not wan to. If specify 
them separately so two types A1 and A2 instead of type A Votca will 
calculate wrongly A1-B and A2 - B and I wish to have A-B.

Would you advise?

Steven

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