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Morphology and crystal structure of a recombinant silk-like molecule, SLP4

✍ Scribed by J. Philip Anderson

Publisher: Wiley (John Wiley & Sons)
Year: 1998
Tongue: English
Weight: 459 KB
Volume: 45
Category: Article
ISSN: 0006-3525
DOI: 10.1002/(sici)1097-0282(19980405)45:4<307::aid-bip5>3.0.co;2-p

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✦ Synopsis

Morphology and crystal structure of a recombinant silk-like molecule, SLP4, were studied. Wide angle x-ray scattering (WAXS) and electron diffraction revealed that SLP4 lyophilized powder and thin films were isomorphic with the silk I crystal structure. Transmission electron microscopy of SLP4 thin films demonstrated a morphology of flat, variable width, crystallites that may aggregate in an epitaxial manner. Theoretical diffraction patterns from silk I crystal structure models were critically compared with SLP4 WAXS data. The analysis concluded that while the crankshaft model is capable of describing details of the SLP4 structural data well, the out-of-register model does not explain the experimental results. In particular, the predicted intensities of the crystallographic reflections for the out-of-register model are

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