Abstract：
:To date, the calcareous tubes of serpulid marine worms have not been studied extensively in a biomineralization context. The structure and composition of the tube shell and adhesive cement of the marine tubeworm Hydroides dianthus were studied using a variety of characterization techniques, including powder XRD, FTIR, SEM, EDX, and AFM. The tube and cement were determined to be inorganic-organic composite materials, consisting of inorganic aragonite (CaCO(3)) and Mg-calcite ((Ca(0.8)Mg(0.2))CO(3)) crystals, and both soluble and insoluble organic matrices (SOM and IOM). SEM imaging revealed a variety of crystal morphologies. AFM nanoindentation of the inorganic components yielded Young's moduli of approximately 20GPa in the wet state, and approximately 50GPa in the dry state. Amino acid analysis of the SOM indicated substantial amounts of acidic and non-polar neutral amino acids. Part of the insoluble organic tube lining was identified as being composed of collagen-containing fibres aligned in a criss-crossed structure. The SOM and organic tube lining were found to contain carboxylated and sulphated polysaccharides. In an artificial seawater solution, the SOM and the organic tube lining mediated CaCO(3) mineralization in vitro.
journal_name
J Struct Bioljournal_title
Journal of structural biologyauthors
Tanur AE,Gunari N,Sullan RM,Kavanagh CJ,Walker GCdoi
10.1016/j.jsb.2009.09.008subject
Has Abstractpub_date
2010-02-01 00:00:00pages
145-60issue
2eissn
1047-8477issn
1095-8657pii
S1047-8477(09)00265-2journal_volume
169pub_type
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更新日期：2014-09-01 00:00:00
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abstract：:This article has been withdrawn at the request of the author(s) and/or editor. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy. ...
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journal_title：Journal of structural biology
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journal_title：Journal of structural biology
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