Rao Ashit, Cölfen Helmut
Physical Chemistry, Department of Chemistry, University of Konstanz, D-78457 Konstanz, Germany.
J Struct Biol. 2016 Nov;196(2):232-243. doi: 10.1016/j.jsb.2016.03.021. Epub 2016 Mar 30.
Biogenic mineralization processes are generally regulated by soluble additives and insoluble matrices. This endows precise control over the different stages of mineralization such as the uptake, transport of mineral precursors as well as the subsequent deposition of the mineral phases with consistent compositions and morphologies. Programmed in the interactions of organic molecules with different precursor species and the fine modulation of the niche environments, a formative elegance is reflected in the biological means for crystal formation in comparison to the synthetic counterparts. In order to spotlight the role of prevalent biophysical environments in the emergence of fascinating materials, we revisit biologically modulated mineralization to describe nucleation and crystallization under physicochemical highly non-ideal conditions on account of macromolecular crowding and the gel-like nature of cellular matrices.
生物矿化过程通常受可溶性添加剂和不溶性基质的调控。这使得对矿化的不同阶段能够进行精确控制,例如矿物质前体的摄取、运输以及随后具有一致组成和形态的矿相沉积。通过有机分子与不同前体物种之间的相互作用以及对生态位环境的精细调节进行编程,与合成材料相比,生物形成晶体的方式体现出一种形成过程中的优雅。为了突出普遍存在的生物物理环境在迷人材料形成过程中的作用,鉴于大分子拥挤和细胞基质的凝胶状性质,我们重新审视生物调控矿化,以描述在物理化学高度非理想条件下的成核和结晶过程。