Amorphous layer around aragonite platelets in nacre

被引：315

作者：

Nassif, N

Pinna, N

Gehrke, N

Antonietti, M

Jäger, C

Cölfen, H

机构：

[1] Max Planck Inst Colloids & Interfaces, Colloid Chem Dept, D-14424 Potsdam, Germany

[2] Univ Halle Wittenberg, Inst Anorgan Chem, D-06120 Halle Saale, Germany

[3] Max Planck Inst Microstruct Phys, D-06120 Halle Saale, Germany

[4] Fed Res Inst Mat Res & Testing, Div 1 3, D-12489 Berlin, Germany

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2005年 / 102卷 / 36期

关键词：

amorphous calcium carbonate; biomineralization; high-resolution transmission EM; solid-state NMR;

D O I：

10.1073/pnas.0502577102

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We reveal that the aragonite CaCO3 platelets in nacre of Haliotis laevigata are covered with a continuous layer of disordered amorphous CaCO3 and that there is no protein interaction with this layer. This finding contradicts classical paradigms of biomineralization, e.g., an epitaxial match between the structural organic matrix and the formed mineral. This finding also highlights the role of physicochemical effects in morphogenesis, complementing the previously assumed total control by biomolecules and bioprocesses, with many implications in nanotechnology and materials science.

引用

页码：12653 / 12655

页数：3

共 13 条

[1] Control of crystal phase switching and orientation by soluble mollusc-shell proteins [J].