PolyP

http://www.annualreviews.org/doi/abs/10.1146/annurev.biochem.68.1.89?journalCode=biochem
 Of theoretical interest regarding poly P is its antiquity in prebiotic evolution, which along with its high energy and phosphate content, make it a plausible precursor to RNA, DNA, and proteins. Practical interest in poly P includes many industrial applications, among which is the microbial removal of P_i in aquatic environments.