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Hello Teresa, c = x/(N.V) where x=number of molecules per unit cell, N=Avogadro's number, V=volume of the unit cell in liter, c=concentration in molar Cheers Filip On Mon, Dec 13, 2010 at 12:07 PM, Teresa De la Mora <[log in to unmask]>wrote: > Hi all > > I'm looking for a way to calculate the protein concentration in a single > crystal. So what I'm thinking is to use the Matthew's number to calculate > how many molecules inside the crystal, then multiply that number by > Avogadro's number to get moles then divide by volume of crystal. Is this > approach correct? > > Thank you for your advice/suggestion > > Happy holidays! :) > > Teresa > > Teresa De la Mora-Rey Ph.D. > Dept. Medicinal Chemistry > University of Minnesota > 8-101 Weaver-Densford Hall > 308 Harvard St. SE, Minneapolis, MN 55455 > Lab phone (612) 626-5226 > "If you never did you should. These things are fun and fun is good" Dr. > Seuss > > -- Filip Van Petegem, PhD Assistant Professor The University of British Columbia Dept. of Biochemistry and Molecular Biology 2350 Health Sciences Mall - Rm 2.356 Vancouver, V6T 1Z3 phone: +1 604 827 4267 email: [log in to unmask] http://crg.ubc.ca/VanPetegem/