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Shell proteome of rhynchonelliform brachiopods

Immel F, Gaspard D, Marie A, Guichard N, Cusack M & Marin F (2015) Shell proteome of rhynchonelliform brachiopods, Journal of Structural Biology, 190 (3), pp. 360-366.

Brachiopods are a phylum of marine invertebrates that have an external bivalved shell to protect their living tissues. With few exceptions, this biomineralized structure is composed of calcite, mixed together with a minor organic fraction, comprising secreted proteins that become occluded in the shell structure, once formed. This organic matrix is thought to display several functions, in particular, to control mineral deposition and to regulate crystallite shapes. Thus, identifying the primary structure of matrix proteins is a prerequisite for generating bioinspired materials with tailored properties. In this study, we employed a proteomic approach to identify numerous peptides that constitute the shell proteins, in three rhynchonellid brachiopods from different localities. Our results suggest that the shell protein repertoires identified thus far, differ from that of better known calcifying metazoans, such as molluscs. © 2015 Elsevier Inc.

Brachiopods; Shell; Biomineralization; Extracellular matrix; Proteomics

AuthorsImmel Francoise, Gaspard Daniele, Marie Arul, Guichard Nathalie, Cusack Maggie, Marin Frederic
Publication date06/2015
Publication date online17/04/2015
Date accepted by journal05/04/2015
ISSN 1047-8477

Journal of Structural Biology: Volume 190, Issue 3 (2015)

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