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제목   [13.08월] 황동수 교수 연구실 Marine Hydroid Perisarc: A chitin- and melanin-reinforced composite with DOPA-iron (III) complexes   이름  관리자
날짜  2013-07-29 14:41:19 조회  2772 추천  0
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Title: Marine Hydroid Perisarc: A chitin- and melanin-reinforced composite with DOPA-iron (III) complexes

Authors: Dong Soo Hwang, Admir Masic, Ekavianty Prajatelistia, Mihaela Iordachescu, J. Herbert Waite

Journal: Acta Biomaterialia (IF = 5.09)

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.

 

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