Abstract
The structure, organic matrix, and mineral structure of the scar (the interface between the adductor muscle and the shell) in Mytilus galloprovincialis were investigated. The scar was found to be a hierarchically multilayered structure composed of organic matrix and structurally different minerals. Different from the aragonite structure of the nacre, we have identified the top layer of the scar to contain structurally organized columnar calcite. This is the first report on calcite-containing scar. Study of the organic matrix showed that there was at least one protein that seemed to be preferentially localized in this columnar layer. Since the scar is the most important stress distribution site in the mussel, the function of the columnar structure and the matrix protein was discussed in relation to a similar structure at the tendon–bone connection site.
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Acknowledgments
The work presented in this paper was supported by a start-up grant from the Basic Scientific Fund for National Public Research Institutes of China through the First Institute of Oceanography, SOA, China (GY02-2011T10), grant from the National Science Foundation of China (31100567), and start-up grant from the Ministry of human resources and social security of China. The authors would also like to thank Dr. Xisheng Fang at China Ocean Sample Repository, SOA, for helping with XRD; and Dr. Jinping Zhang and Guosheng Cheng at Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, and Dr. Fei Li at Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, for helping with SEM imaging.
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Yingfei Song and Yao Lu contributed equally to this study.
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Song, Y., Lu, Y., Ding, H. et al. Structural Characteristics at the Adductor Muscle and Shell Interface in Mussel. Appl Biochem Biotechnol 171, 1203–1211 (2013). https://doi.org/10.1007/s12010-013-0194-2
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DOI: https://doi.org/10.1007/s12010-013-0194-2