Effects of Ultraviolet Rays and Temperature on Spider Silks.
Effects of Ultraviolet Rays and Temperature on Spider Silks.
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紫外线和温度对蜘蛛丝的影响。
DOI：
10.2476/asjaa.46.1
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发表时间：
1997
影响因子：
--
通讯作者：
S. Osaki
中科院分区：
文献类型：
--
作者：
S. Osaki
采用电子自旋共振ESR方法研究了紫外线和温度对成年蜘蛛阿米巴蜘蛛拖拽线的影响。在室温下，相对信号强度随紫外线照射时间的增加而增加，这是衡量蛋白质分子分解的指标。这说明构成阻力线的蛋白质分子被紫外线分解了。无紫外线的信号强度在100℃时逐渐降低，100℃以上信号强度增加，然后在170℃左右出现峰值。这一峰值可能是由于高温化学分解引起的自由基增加和丝蛋白分子运动增强引起的自由基减少两种因素的叠加。
Effects of ultraviolet rays and temperature upon drag lines of mature spider Argiope amoena were studied by the electron spin resonance ESR method. The relative signal intensity as a measure of decomposition of protein molecules increased at room temperature with irradiation time of ultraviolet rays. This shows that the protein molecules constituting drag lines were decomposed by the ultraviolet rays. The signal intensity without ultraviolet rays decreased gradually to 100°C, above 100°C increased, and then showed a peak at about 170°C. The peak may come from the superposition of two factors such as an increase in radicals ascribed to chemical decomposition at high temperatures and a decrease in radicals ascribed to the enhancement of molecular motion of silk protein.