Journal
BIOPOLYMERS
Volume 91, Issue 2, Pages 103-107Publisher
WILEY
DOI: 10.1002/bip.21095
Keywords
amelogenin; nanospheres; quaternary structure
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Funding
- NIH-NIDCR [DE-015347]
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Amelogenin is a unique protein that self-assembles into spherical aggregates called nanospheres and is believed to be involved in controlling the formation of the highly anisotropic and ordered hydroxyapatite crystallites that form enamel. The adsorption behavior of amelogenin onto substrates is of great interest because protein-surface interactions are critical to its function. We report studies of the adsorption of amelogenin onto self-assembled monolayers containing COOH end group functionality as well as single crystal fluoroapatite, a biologically relevant surface. We found that although our solutions contained only nanospheres of narrow size distribution, smaller structures such as dimers or trimers were observed oil the hydrophilic surfaces. This suggests that amelogenin can adsorb onto surfaces as small structures that shed or disassemble from the nanospheres that are present in solution. (c) 2008 Wiley Periodicals, Inc. Biopolymers 91: 103-107, 2009.
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