Hyriopsis cumingii Hic52-A novel nacreous layer matrix protein with a collagen-like structure.

Nacre is a product of a precisely regulated biomineralization process and a major contributor to the luster of pearls. Nacre is composed of calcium carbonate and an organic matrix of proteins that is secreted from mollusc mantle tissue and is exclusively associated with shell formation. In this study, hic52, a novel matrix protein gene from mantle of Hyriopsis cumingii, was cloned and functionally analyzed.

A Novel Matrix Protein Hic31 from the Prismatic Layer of Hyriopsis Cumingii Displays a Collagen-Like Structure.

In this study, we clone and characterize a novel matrix protein, hic31, from the mantle of Hyriopsis cumingii. The amino acid composition of hic31 consists of a high proportion of Glycine residues (26.67%).

Silkmapin of Hyriopsis cumingii, a novel silk-like shell matrix protein involved in nacre formation.

Understanding the role of matrix proteins in nacre formation and biomineralization in mollusks is important for the pearl industry. In this study, the gene encoding the novel Hyriopsis cumingii shell matrix protein silkmapin was characterized. The gene encodes a protein of 30.