From “1000 spider silkomes: Linking sequences to silk physical properties” by Kazuharu Arakawa et al.. Licensed under CC BY-NC 4.0.
Spider silks are among the toughest known materials and thus provide models for renewable, biodegradable, and sustainable biopolymers. However, the entirety of their diversity still remains elusive, and silks that exceed the performance limits of industrial fibers are constantly being found. We obtained transcriptome assemblies from 1098 species of spiders to comprehensively catalog silk gene sequences and measured the mechanical, thermal, structural, and hydration properties of the dragline silks of 446 species. The combination of these silk protein genotype-phenotype data revealed essential contributions of multicomponent structures with major ampullate spidroin 1 to 3 paralogs in high-performance dragline silks and numerous amino acid motifs contributing to each of the measured properties. We hope that our global sampling, comprehensive testing, integrated analysis, and open data will provide a solid starting point for future biomaterial designs.
本研究の遂行に際し、当社は 内閣府 革新的研究開発推進プログラム（ImPACT）「超高機能構造タンパク質による素材産業革命」 の助成を受けました。