[Chimera-users] Solvent Exposure of Amino Acids HELP

Narine Vapuryan narinevapuryan at hotmail.com
Wed Jul 15 12:14:19 PDT 2020


I hope this email finds you well and healthy. I have a question regarding relative solvent excluded surface area (relSESA) calculations using Chimera. I am able to calculate the relative solvent excluded surface areas of residues using the following Chimera guide: https://www.cgl.ucsf.edu/chimera/docs/UsersGuide/surfnorm.html. Although I am able to perform the calculations and get an output, I am having trouble understanding those values. I would have expected lower relSESA values to mean more residue exposure to solvent (surface residues), and high relSESA to mean less residue exposure to solvent (buried residues). Is my interpretation incorrect? Are lower relSESA values are to be interpreted as lower exposure to solvent (buried residues) and higher relSESA values as more exposed to the solvent (surface residues)?

I would really appreciate any help or insight on this matter considering that I have been trying to figure this out for the past week. Please feel free to reach out to me if you need clarification on my question.

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