Dear all,
I understood what they mean.
ASA -> Solvent accessible surface area
BSA -> Buried area among Solvent accessible surface area when it make
interaction
Sorry for self-questioning and -answering.
Best,
Hyunchul Kim
-------- Forwarded Message --------
> From: Hyunchul Kim <[log in to unmask]>
> Reply-To: Hyunchul Kim <[log in to unmask]>
> To: [log in to unmask]
> Subject: [ccp4bb] accessible surface area of PISA at EBI
> Date: Wed, 18 Jul 2007 12:24:57 +0900
>
> Dear all,
>
> Could you explain two terms of "Accessible Surface Area"(ASA) and
> "Buried Surface Area"(BSA) of PISA at EBI ?
>
> I thought that
> Standard accessible surface area =
> Solvent accessible surface area + Buried surface area.
>
> When I looked up the result of PISA, ASA is always bigger than BSA
> except "inaccessible residues". Thus, I think that ASA of PISA means
> that "Standard accessible surface area" but one weird thing is that
> those values of same type residues,i.e. Ala, are quite varied among one
> chain.
>
> Also, "Inaccessible residues" has 0.00 square angstrom for both ASA and
> BSA. How can this happen? I believe that ASA should be bigger than 0.00,
> for instance, 100 angstrom square.
>
> Best,
>
> Hyunchul Kim
>
> Ph.D candidate
> Bioinformatics program
> Keio University, Japan
>
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