论文标题
蜘蛛的附着盘的总和频率产生光谱
Sum frequency generation spectroscopy of the attachment disc of a spider
论文作者
论文摘要
使用红外可见的振动总和产生（SFG）光谱研究了蜘蛛的附着盘的吡咯丝。蜘蛛可以将拖拉线和径向线连接到自然界中的许多种类（混凝土，合金，金属，玻璃，植物树枝，叶片等）中。粘附可以承受蜘蛛的重量，并在其球网上抵抗风。根据我们的SFG光谱研究，精氨酸侧链的NH组和/或NH $ _ {2} $组的精氨酸和谷氨酰胺侧链在附着的丝绸蛋白的氨基酸序列中被建议在椎间盘中定向。它是从观测到的Doublet SFG峰在3300 cm $^{ - 1} $上推断出来的，该峰含有两种结构。
The pyriform silk of the attachment disc of a spider was studied using infrared-visible vibrational sum frequency generation (SFG) spectroscopy. The spider can attach dragline and radial lines to many kinds of substrates in nature (concrete, alloy, metal, glass, plant branches, leaves, etc.) with the attachment disc. The adhesion can bear the spider's own weight, and resist the wind on its orb web. From our SFG spectroscopy study, the NH group of arginine side chain and/or NH$_{2}$ group of arginine and glutamine side chain in the amino acid sequence of the attachment silk proteins are suggested to be oriented in the disc. It was inferred from the observed doublet SFG peaks at around 3300 cm$^{-1}$ that the oriented peptide contains two kinds of structures.
