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Liquid-solid transition in nuclei of protein crystals

By Aleksey Lomakin, Neer Asherie and George B. Benedek

Abstract

It is generally assumed that crystallization begins with a small, crystalline nucleus. For proteins this paradigm may not be valid. Our numerical simulations show that under conditions typically used to produce protein crystals, small clusters of model proteins (particles with short-range, attractive interactions) cannot maintain a crystalline structure. Protein crystal nucleation is therefore an indirect, two-step process. A nucleus first forms and grows as a disordered, liquid-like aggregate. Once the aggregate grows beyond a critical size (about a few hundred particles) crystal nucleation becomes possible

Topics: Biological Sciences
Publisher: National Academy of Sciences
Year: 2003
DOI identifier: 10.1073/pnas.1334069100
OAI identifier: oai:pubmedcentral.nih.gov:193547
Provided by: PubMed Central
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