Biomineralization: Elemental and Organic Influence in Carbonate Systems

Cusack, Maggie; Freer, A. A.

doi:10.1021/cr078270o

Cited by 212 publications

(178 citation statements)

References 278 publications

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“…Weiner, Cusack, and their coworkers have also pointed that in the ''active sites'' of biomineralization proteins, runs of Asp residues commonly separated by either glycine or serine (41,42). The Asp residues in an acidic block are usually between 1 and 10 units and short polyAsp maybe more common (42). We conclude that polyAsp is in fact distinct from the Asp-rich protein so that polyAsp cannot be considered as a suitable model for the biomineralization proteins.…”

Section: Resultsmentioning

confidence: 69%

“…However, Mann et al have demonstrated that the polyAsp with long chain-length greatly inhibits ACP transformation while the extracted protein with similar molecular weight promotes the transformation (40). Weiner, Cusack, and their coworkers have also pointed that in the ''active sites'' of biomineralization proteins, runs of Asp residues commonly separated by either glycine or serine (41,42). The Asp residues in an acidic block are usually between 1 and 10 units and short polyAsp maybe more common (42).…”

Section: Resultsmentioning

confidence: 99%

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Magnesium-aspartate-based crystallization switch inspired from shell molt of crustacean

Tao

Zhou

Zhang

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

131

124

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Many animals such as crustacean periodically undergo cyclic molt of the exoskeleton. During this process, amorphous calcium mineral phases are biologically stabilized by magnesium and are reserved for the subsequent rapid formation of new shell tissue. However, it is a mystery how living organisms can regulate the transition of the precursor phases precisely. We reveal that the shell mineralization from the magnesium stabilized precursors is associated with the presence of Asp-rich proteins. It is suggested that a cooperative effect of magnesium and Asp-rich compound can result into a crystallization switch in biomineralization. Our in vitro experiments confirm that magnesium increases the lifetime of amorphous calcium carbonate and calcium phosphate in solution so that the crystallization can be temporarily switched off. Although Asp monomer alone inhibits the crystallization of pure amorphous calcium minerals, it actually reduces the stability of the magnesium-stabilized precursors to switch on the transformation from the amorphous to crystallized phases. These modification effects on crystallization kinetics can be understood by an Asp-enhanced magnesium desolvation model. The interesting magnesium-Asp-based switch is a biologically inspired lesson from nature, which can be developed into an advanced strategy to control material fabrications.biomineralization ͉ calcium biominerals ͉ phase transformation

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Section: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 99%

Magnesium-aspartate-based crystallization switch inspired from shell molt of crustacean

Tao

Zhou

Zhang

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

131

124

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show abstract

“…Because Laqueus shells examined here tend to exhibit more vivid red colouration in larger individuals, the red pigment is probably deposited gradually during the growth of the secondary shell layer. Because the 6.5 kDa protein has been extracted from different shell layers in each species, it seems to represent a phylogenetic constraint [44].…”

Section: One Likely Possibility For the Evolutionary Arms Race Betweementioning

confidence: 99%

Stealth Effect of Red Shell in Laqueus rubellus (Brachiopoda, Terebratulida) on the Sea Bottom: An Evolutionary Insight into the Prey-Predator Interaction

Shiino

Kitazawa

2012

ISRN Zoology

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The selective advantage of empire red coloration in the shell of Laqueus rubellus (a terebratulid brachiopod) was examined in terms of prey-predator interactions. The study was based on a comparison of benthic suspension feeders living at a depth of about 130 m in Suruga Bay, Japan, with special reference to their visibility under visible and near-infrared light conditions. Almost all species exhibited red coloration under visible light, while only the shell of Laqueus was dark under infrared light, similar to rocks and bioclasts. Given the functional eyes of macropredators such as fishes and coleoids, which are specialized to detect light in the blue-to-green visible spectrum, and even the long-wavelength photoreceptors of malacosteids, Laqueus should avoid both visible and infrared detection by predators inhabiting the sublittoral bottom zone. This fact suggests that terebratulids have evolved the ability to remain essentially invisible even as the optic detection abilities of predators have improved. The present hypothesis leads to the possibility that the appearance of marine organisms is associated with the passive defensive strategy, making possible to provide a lower predation risk.

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“…a: Coccoliths calcite plates on the exterior of a single celled coccolithophorid alga, Emiliania huxleyi. Coccoliths are thought to provide protection against grazing, improve buoyancy, and scatter light to protect against damage from intense UV as well as improving light capture for species at depth (Cusack & Freer, 2008) (from Ref (Young, et al, 1999) with permission). b: Intricate walls.…”

Section: Biomineralization and Biomineralsmentioning

confidence: 99%

The Biomimetic Mineralization Closer to a Real Biomineralization

Hu¹,

Xue²,

Du³

2011

Advances in Biomimetics

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Biomineralization: Elemental and Organic Influence in Carbonate Systems

Cited by 212 publications

References 278 publications

Magnesium-aspartate-based crystallization switch inspired from shell molt of crustacean

Magnesium-aspartate-based crystallization switch inspired from shell molt of crustacean

Stealth Effect of Red Shell in Laqueus rubellus (Brachiopoda, Terebratulida) on the Sea Bottom: An Evolutionary Insight into the Prey-Predator Interaction

The Biomimetic Mineralization Closer to a Real Biomineralization

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