Measuring the 2nd Virial Coeffient and Molecular Density of Proteins to Improve Crystallization

The second virial coefficient of Human Serum Albumin (HSA) was measured using a SEC-MALS 20 detector connected to a Refractive Index concentration detector and an online differential viscometer. Two different buffer conditions, Phosphate buffer pH 7.4 and Citrate buffer pH 4.1 were used, which revealed interesting and contrasting data.

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