Biomacromolecules in bivalve shells with crossed lamellar architecture

Agbaje, Oluwatoosin B. A.; Thomas, Denise E.; DOMINGUEZ, J. GABRIEL; Mclnerney, Bernie V.; Kosnik, Matthew A.; Jacob, Dorrit E

doi:10.1007/s10853-018-3165-8

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Biomacromolecules in bivalve shells with crossed lamellar architecture

Author(s): Oluwatoosin B. A. Agbaje , Denise E. Thomas , J. Gabriel Dominguez , Bernie V. Mclnerney , Matthew A. Kosnik , Dorrit E. Jacob

Publication date (Electronic): November 29 2018

Journal: Journal of Materials Science

Publisher: Springer Science and Business Media LLC

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Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4

U K Laemmli (1970)

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Biological materials: Structure and mechanical properties

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An acidic matrix protein, Pif, is a key macromolecule for nacre formation.

Michio Suzuki, Kazuko Saruwatari, Toshihiro Kogure … (2009)

The mollusk shell is a hard tissue consisting of calcium carbonate crystals and an organic matrix. The nacre of the shell is characterized by a stacked compartment structure with a uniformly oriented c axis of aragonite crystals in each compartment. Using a calcium carbonate-binding assay, we identified an acidic matrix protein, Pif, in the pearl oyster Pinctada fucata that specifically binds to aragonite crystals. The Pif complementary DNA (cDNA) encoded a precursor protein, which was posttranslationally cleaved to produce Pif 97 and Pif 80. The results from immunolocalization, a knockdown experiment that used RNA interference, and in vitro calcium carbonate crystallization studies strongly indicate that Pif regulates nacre formation.