Chiral habit modifications of gypsum from epitaxial-like adsorption of stereospecific growth inhibitors

Cody, Anita M.; Cody, Robert D.

doi:10.1016/0022-0248(91)90086-k

Cited by 97 publications

(74 citation statements)

References 11 publications

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“…Large natural crystals with enantiomeric faces occur commonly for the evaporite minerals gypsum (hydrous calcium sulfate) and barite (barium sulfate), as well as apatite (calcium phosphate). Significantly, chiral amino acids affect the growth morphology of gypsum crystals (19), so chiral selectivity by gypsum may be expected also. All of the major rock-forming minerals in basalt, including pyroxenes, feldspars, and olivines, also may display enantiomorphic pairs of faces (12).…”

Section: Discussionmentioning

confidence: 99%

Selective adsorption ofl- andd-amino acids on calcite: Implications for biochemical homochirality

Hazen

Filley

Goodfriend

2001

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

369

261

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The emergence of biochemical homochirality was a key step in the origin of life, yet prebiotic mechanisms for chiral separation are not well constrained. Here we demonstrate a geochemically plausible scenario for chiral separation of amino acids by adsorption on mineral surfaces. Crystals of the common rock-forming mineral calcite (CaCO3), when immersed in a racemic aspartic acid solution, display significant adsorption and chiral selectivity of D-and L-enantiomers on pairs of mirror-related crystal-growth surfaces. This selective adsorption is greater on crystals with terraced surface textures, which indicates that D-and L-aspartic acid concentrate along step-like linear growth features. Thus, selective adsorption of linear arrays of D-and L-amino acids on calcite, with subsequent condensation polymerization, represents a plausible geochemical mechanism for the production of homochiral polypeptides on the prebiotic Earth.

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Section: Discussionmentioning

confidence: 99%

Selective adsorption ofl- andd-amino acids on calcite: Implications for biochemical homochirality

Hazen

Filley

Goodfriend

2001

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

369

261

View full text Add to dashboard Cite

show abstract

“…The present approach which is based upon specific molecular interactions at the solid-liquid interface was applied to a variety of molecular crystals, including ~-amino acids, dipeptides, primary and secondary amides, carboxylic acids, sugars, steroids etc. It therefore appears to be general and has since been successfully applied to a large class of materials, be they organic (Lewtas, Tack, Beiny & Mullin, 1991;Skoulika, Michaelidis & Aubry, 1991;Antinozzi, Brown & Purich, 1992), inorganic (Black et al, 1991;Cody & Cody, 1991;Ristic, Sherwood & Wojeshowski, 1994) or biological (Markman, Elias, Addadi, Cohen, & Berkovitch-Yellin, 1992).…”

Section: Morphological Crystal Engineeringmentioning

confidence: 99%

Understanding and control of nucleation, growth, habit, dissolution and structure of two- and three-dimensional crystals using `tailor-made' auxiliaries

Weissbuch¹,

Popovitz‐Biro²,

Lahav³

et al. 1995

Acta Crystallogr B Struct Sci

332

288

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Tailor-made auxiliaries for the control of nucleation and growth of molecular crystals may be classified into two broad categories: inhibitors and promoters. Tailor-made inhibitors of crystal growth can be used for a variety of purposes, which include morphological engineering and etching, reduction of crystal symmetry, assignment of absolute structure of chiral molecules and polar crystals, elucidation of the effect of solvent on crystal growth, and crystallization of a desired polymorph. As for crystal growth promoters, monolayers of amphiphilic molecules on water have been used to induce the growth of a variety of three-dimensional crystals at the monolayer-solution interface by means of structural match, molecular complementarity or electrostatic interaction. A particular focus is made on the induced nucleation of ice by mono- © 1995 International Union of Crystallography Printed in Great Britain -all fights reserved layers of water-insoluble aliphatic alcohols. The twodimensional crystalline structures of such monolayers have been studied by grazing incidence X-ray diffraction. It has become possible to monitor, by this method, the growth, dissolution and structure of self-aggregated crystalline monolayers, and indeed multilayers, affected by the interaction of solvent molecules in the aqueous subphase with the amphiphilic headgroups, and by the use of tailor-made amphiphilic additives.

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“…For raphide production, growth must be inhibited on the sides of the crystals so that they only grow in length, resulting in a needle-like morphology. A wide range of materials can alter the growth of specific crystal faces, thereby influencing crystal morphology (Addadi and Weiner, 1985;Cody and Homer, 1984;Cody and Cody, 1991). Often the same molecule can inhibit crystal growth in solution and yet nucleate crystal growth when it is bound to a substrate (Addadi and Weiner, 1985).…”

Section: Matrix Components In Relation To Crystal Morphologymentioning

confidence: 99%

The intravacuolar organic matrix associated with calcium oxalate crystals in leaves of Vitis

et al. 1995

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Summaryin Vitis (grape) calcium oxalate crystals form in a needlelike morphology unique to plants, presenting an intriguing system of biological control over mineral formation. Crystals develop within an organic matrix which appears to provide control over the sites and forms of crystal deposition; however, little is known about the chemical nature of the matrix. A procedure has been developed to isolate crystals along with their associated intravecuolar matrix from leaves of grape, and studies have been initiated into the chemical composition of the matrix by characterizing elemental content, carbohydrates, and protein. The isolated matrix consisted of two structural phases, membrane chambers enclosing developing crystals, and a water-soluble phase surrounding the crystal chambers. Elemental analysis detected substantial calcium and potassium, as well as some iron in the water-soluble phase. Analysis of the water-soluble matrix by GC-MS showed that it contained an unusual polymer with novel glucuronic acid linkages. In addition, linkage analysis indicated 6-linked arabinans, arabinogalactan, and various mannosyl units typical of complex carbohydrates of Nlinked glycoproteins. SDS-PAGE analysis of the wetersoluble matrix and crystal chambers showed that each had distinct banding profiles in silver-stained gels, with prominent 60 and 70 kOa polypeptides in crystal chamber extracts. Demineralization studies provided direct evidence that the isolated matrix promotes crystal nucleation. The findings about the organic matrix associated with calcium oxalate crystals in grape are discussed in relation to crystal nucleation and growth and features shared with animal and microbial biomineralization systems.

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Chiral habit modifications of gypsum from epitaxial-like adsorption of stereospecific growth inhibitors

Cited by 97 publications

References 11 publications

Selective adsorption ofl- andd-amino acids on calcite: Implications for biochemical homochirality

Selective adsorption ofl- andd-amino acids on calcite: Implications for biochemical homochirality

Understanding and control of nucleation, growth, habit, dissolution and structure of two- and three-dimensional crystals using `tailor-made' auxiliaries

The intravacuolar organic matrix associated with calcium oxalate crystals in leaves of Vitis

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