TheO‐phospho‐L‐serine [Ser(P)] containing peptides and proteins play an important role in controlling the morphology of biominerals. The poly[Ser(P)] and copoly[Ser(P)xAspy] affect the calcium carbonate (CaCO3) morphology and polymorph. The CaCO3helical structures were obtained in the presence of copoly[Ser(P)75Asp25]. When theL‐copolymer was used as an additive, a clockwise P twisted spiral morphology was formed. On the other hand, when usingD‐copolymer, a counterclockwise M twisted spiral morphology was obtained. Optical micrographs of chiral morphologies of CaCO3in the presence of a)L‐copolymer and b)D‐copolymer. magnified image Optical micrographs of chiral morphologies of CaCO3in the presence of a)L‐copolymer and b)D‐copolymer.
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Sugawara et al. (2003) studied this question.
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