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. 2013 Apr 29;288(23):16438–16450. doi: 10.1074/jbc.M113.469593

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© 2013 by The American Society for Biochemistry and Molecular Biology, Inc.

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FIGURE 3. — Micrographs of stabilized cystatin C oligomers. Negative-stain electron microscopy images of disulfide-stabilized HMW-oligomers (A) and decamers (B), isolated by SEC. In both samples circular structures were visualized (arrows), with some objects resembling the pore-like morphology of oligomers formed from several other precursor proteins (39–41). AFM images (left) were paired with duplicate diagrams (right) representing the cross-sectional analyses of HMW-oligomers (C) and decamers (D). The profiles of two HMW-oligomers and two decamers are given. The height of both oligomeric species is 1.2–1.4 nm, corresponding to a monomolecular layer of cystatin C subunits.