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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >The challenges of trafficking hydrolysis prone metals and ascidians as an archetype
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The challenges of trafficking hydrolysis prone metals and ascidians as an archetype

机译：将易水解的金属和海鞘作为原型运输的挑战

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Some of the metal ions that are required, exploited, or simply managed in biological systems are susceptible to hydrolysis and to hydrolytic precipitation in the aqueous, aerobic environment of much of biology. Organisms have evolved exquisite mechanisms for handling these metal ions, offering striking examples of biological control over inorganic coordination chemistry. This year marks the one hundredth anniversary of the discovery of remarkably high vanadium concentrations in the blood cells of the ascidian. In the ensuing years, these marine invertebrates were established as masters of the biological chemistry of very hydrolysis-prone metals, with various ascidian species accumulating high concentrations of iron, vanadium, and titanium, among others. These three metals have very different histories of biological relevance, and many questions remain about how, and ultimately why, these organisms sequester them. This Perspective addresses the aqueous coordination chemistry that organisms like ascidians must control if they are to manipulate hydrolysis-prone metal ions, and describes some of the ascidian biomolecules that have been implicated in this phenomenon. The recently available genome sequence for one ascidian species offers a glimpse into its metal-management arsenal. It offers the opportunity to map the relatively well-studied paradigm of iron management onto the genome of an organism that is intermediate in evolution between invertebrates and vertebrates. The ascidians have much to teach us about how to manage metals like iron, titanium, and vanadium and how that ability evolved.
机译：生物系统中需要，开发或简单管理的某些金属离子在许多生物学的含水好氧环境中易水解和水解沉淀。有机体已经进化出处理这些金属离子的精妙机制，为无机配位化学的生物控制提供了惊人的例子。今年是发现海鞘血细胞中钒浓度极高的一百周年。在随后的几年中，这些海洋无脊椎动物被确立为极易水解金属的生物化学的大师，其中各种海鞘物种都积累了高浓度的铁，钒和钛。这三种金属具有不同的生物学相关性历史，并且关于这些生物如何以及如何最终隔离它们的问题仍然存在许多问题。本《观点》探讨了诸如海鞘等生物体是否要操纵易于水解的金属离子时必须控制的水配位化学，并描述了与这种现象有关的一些海鞘生物分子。最近可以找到的一种海鞘物种的基因组序列可以窥见其金属管理库。它提供了将研究相对深入的铁管理范例映射到处于无脊椎动物和脊椎动物之间进化中间的生物基因组的机会。这些海员有很多教给我们关于如何管理铁，钛和钒等金属以及这种能力如何发展的知识。

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