Nano-channels in the spider fang for the transport of Zn ions to cross-link His-rich proteins pre-deposited in the cuticle matrix

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• 作者：Yael Politi^a ; ^{yael.politi@mpikg.mpg.de} ; Eckhard Pippel^b ; Ana C.J. Licuco-Massouh^a ; Luca Bertinetti^a ; Horst Blumtritt^b ; Friedrich G. Barth^c ; Peter Fratzl^a
• 关键词：Biomaterials ; Spider fang ; Metal ion coordination ; XAS ; EELS
• 刊名：Arthropod Structure & Development
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：46
• 期：1
• 页码：30-38
• 全文大小：3299 K
• 卷排序：46

文摘

Histidine–rich proteins are deposited before ecdysis at the tip of the fang. Zn is incorporated into the matrix of the spider fang after ecdysis via an array of nano-channels. Cross-linking of the protein matrix is achieved by zinc ions binding to histidine residues.