TIME RESOLVED ANALYSIS OF MATURATION EXPANSION OF DSDNA PHAGE CAPSID

耐金属植物通过排除或减少吸收来发挥作用 有毒离子，在细胞壁中积累金属，或络合 以某种方式降低金属的毒性。 曼陀罗 （曼陀罗）是一种合成多肽的耐镉植物 将镉隔离在细胞内部并螯合重金属 离子在细胞壁外部。 金属结合的性质 细胞壁上的位点尚不清楚，但有许多 源自细胞壁蛋白、脂质和 能够配位金属离子的碳水化合物。 我们的目标是使用 X 射线吸收光谱直接探测金属结合 D. innoxia 细胞壁上的位点，特别是 Ba2、Cu2 和 Cd2 金属 结合位点。 了解植物细胞壁之间的相互作用 重金属离子很重要，因为金属在 农业上重要的植物是重要的手段 金属被引入食物网。 此外，去除 植物或植物产品从环境中释放的有毒金属 作为修复重金属的有效手段的潜力 放射性核素废物。

Metal-tolerant plants function by excluding or reducing the uptake of the toxic ion, accumulating the metal in cell walls, or complexing the metal in some way to decrease its toxicity. Datura innoxia (Jimsonweed) is a cadmium-tolerant plant that synthesizes polypeptides to sequester cadmium internally in the cell and chelates heavy metal ions externally on the cell wall. The nature of the metal binding sites on the cell walls is not known, however, there are a number of functional groups derived from cell wall proteins, lipids and carbohydrates capable of coordinating metal ions. Our goal is to use X-ray absorption spectroscopy to directly probe the metal binding sites on D. innoxia cell walls, specifically Ba2+, Cu2+ and Cd2+ metal binding sites. Understanding the interaction between plant cell walls and heavy metal ions is important because metal accumulation in agriculturally important plants is the principle means by which heavy metals are introduced into the food web. In addition, removal of toxic metals from the environment by plants or plant products has potential as an effective means of remediating heavy metal and radionuclide waste.