Phosphorus is an element essential for life. It is fundamental to all living organisms, and is a key component of RNA, DNA, and cell membranes. Phosphorus compounds must have been involved in the emergence of primordial life. Importantly though, these compounds were water soluble and reactive so that they could participate in various chemical processes. Only in this case could phosphorus be involved in phosphorylation, which enables the synthesis of complex molecules. However, phosphorus in nature is only found as a phosphate ion in fairly inert minerals of the phosphate class. Hence, phosphate minerals are unlikely to have been a source for the prebiotic synthesis of phosphorus-containing compounds—the precursors of the first living organisms. For scientists, it remains a mystery which phosphorus compounds contributed to the appearance of the building blocks of RNA and DNA molecules.
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Source: Phys.org