IUBio

Electron microscopy of proteins

Dima Klenchin klenchin at facstaff.REMOVE_TO_REPLY.wisc.edu
Thu Aug 6 09:25:37 EST 1998


In article <35C98E51.7F7C at uni-koeln.de>, "Dr. Christian Kupfer" <christian.kupfer at uni-koeln.de> wrote:
>I have some EM-Pictures of protein-komplexes bound to DNA.
>I can determine the size of the proteins in angstroms, because
>I know the size of the DNA.
>
>Is there anybody who can tell me how to determine the molecular 
>mass just by knowing the radius in angstroms? Or is there any good 
>review/ book out there where I can find answers?

As far as I know, the density of all proteins is ~ the same. Hence, if you
know dimensions (is it _really_ sphere?), you know mass. 

        Dima



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