Silica-protein composite layers of the giant basal spicules from Monorhaphis Basis for their mechanical stability

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	Silica-protein composite layers of the giant basal spicules from Monorhaphis Basis for their mechanical stability
	Wang, XH (Wang, Xiaohong); Schlossmacher, U (Schlossmacher, Ute); Jochum, KP (Jochum, Klaus Peter); Gan, L (Gan, Lu); Stoll, B (Stoll, Brigitte); Uriz, I (Uriz, Iosune); Muller, WEG (Mueller, Werner E. G.)
刊名	PURE AND APPLIED CHEMISTRY
	2010
卷号	82 期号:1 页码:175-192
关键词	composite layers composite materials Monorhaphis silicate silicatein sponges
ISSN号	0033-4545
英文摘要	The hexactinellid sponge Monorhaphis chuni possesses with its giant basal spicules the largest biosilica structure on Earth. The approximately 8.5-mm-thick spicules are composed of up to 800 lamellae. By application of high-resolution electron microscopy (HRSEM), it is shown that within the siliceous lamellae a proteinaceous scaffold exists which is composed of one protein of a size of 27 kDa. Analyses with Fourier transform infrared (FT-IR) emission and energy-dispersive X-ray (EDX) spectroscopy support this localization of the protein. No evidence for the presence of protein oil the Surfaces of the lamellae Could be obtained. Heating the giant basal spicule to 600 degrees C destroys and eliminates the protein scaffold. At a temperature of 1600 degrees C, the lamellae fuse to solid glass via a nonstructured, foamed-up molten transition state. Elevation of the temperature to 2700 degrees C results in the formation of silica drops (Euplectella aspergillum). After the elimination of the protein scaffold from the silica lamellae, the spicules lose their mechanical characteristics of the original hydrated silica/protein composite to be flexible and simultaneously stiff and tough. The data presented here are expected to contribute to technologies suited to fabricate novel organic/inorganic (silica) hybrid fibers.
学科主题	古生物学
WOS关键词	DEMOSPONGE SUBERITES-DOMUNCULA ; SEA HEXACTINELLID MONORHAPHIS ; BIOSILICA-GLASS ; SPONGE ; EXPRESSION ; MATRIX ; CHUNI
WOS研究方向	Chemistry
语种	英语
出版者	INT UNION PURE APPLIED CHEMISTRY
WOS记录号	WOS:000274709300016
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39154]
专题	中国地质调查局
作者单位	Ctr Estudis Avancats Blanes, Dept Aquat Ecol, ES-17300 Blanes, Girona, Spain
推荐引用方式 GB/T 7714	Wang, XH ,Schlossmacher, U ,Jochum, KP ,et al. Silica-protein composite layers of the giant basal spicules from Monorhaphis Basis for their mechanical stability[J]. PURE AND APPLIED CHEMISTRY,2010,82(1):175-192.
APA	Wang, XH .,Schlossmacher, U .,Jochum, KP .,Gan, L .,Stoll, B .,...&Muller, WEG .(2010).Silica-protein composite layers of the giant basal spicules from Monorhaphis Basis for their mechanical stability.PURE AND APPLIED CHEMISTRY,82(1),175-192.
MLA	Wang, XH ,et al."Silica-protein composite layers of the giant basal spicules from Monorhaphis Basis for their mechanical stability".PURE AND APPLIED CHEMISTRY 82.1(2010):175-192.