Marine hydroid perisarc: A chitin- and melanin-reinforced composite with DOPA–iron(III) complexes
SCIE
SCOPUS
- Title
- Marine hydroid perisarc: A chitin- and melanin-reinforced composite with DOPA–iron(III) complexes
- Authors
- Hwang, DS; Admir Masic; Ekavianty Prajatelistia; Mihaela Iordachescu; J Herbet Waite
- Date Issued
- 2013-09
- Publisher
- Elsevier
- Abstract
- Many marine invertebrates utilize biomacromolecules as building blocks to form their load-bearing tissues. These polymeric tissues are appealing for their unusual physical and mechanical properties, including high hardness and stiffness, toughness and low density. Here, a marine hydroid perisarc of Aglaophenia latirostris was investigated to understand how nature designs a stiff, tough and lightweight sheathing structure. Chitin, protein and a melanin-like pigment, were found to represent 10, 17 and 60 wt.% of the perisarc, respectively. Interestingly, similar to the adhesive and coating of marine mussel byssus, a DOPA (3,4-dihydroxyphenylalanine) containing protein and iron were detected in the perisarc. Resonance Raman microprobe analysis of perisarc indicates the presence of catechol-iron(III) complexes in situ, but it remains to be determined whether the DOPA-iron(III) interaction plays a cohesive role in holding the protein, chitin and melanin networks together. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/27410
- DOI
- 10.1016/J.ACTBIO.2013.06.015
- ISSN
- 1742-7061
- Article Type
- Article
- Citation
- ACTA BIOMATERIALIA, vol. 9, no. 9, page. 8110 - 8117, 2013-09
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