کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2051149 1074193 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In vitro regulation of CaCO3 crystal polymorphism by the highly acidic molluscan shell protein Aspein
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
In vitro regulation of CaCO3 crystal polymorphism by the highly acidic molluscan shell protein Aspein
چکیده انگلیسی

Biominerals, especially molluscan shells, generally contain unusually acidic proteins. These proteins are believed to function in crystal nucleation and inhibition. We previously identified an unusually acidic protein Aspein from the pearl oyster Pinctada fucata. Here we show that Aspein can control the CaCO3 polymorph (calcite/aragonite) in vitro. While aragonite is preferentially formed in Mg2+-rich solutions imitating the extrapallial fluids of marine molluscs, Aspein exclusively induced calcite precipitation. Our results suggest that Aspein is involved in the specific calcite formation in the prismatic layer. Experiments using truncated Aspein demonstrated that the aspartic acid rich domain is crucial for the calcite precipitation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: FEBS Letters - Volume 582, Issue 5, 5 March 2008, Pages 591–596
نویسندگان
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