Nucleic acids rich in guanine are able to fold into unique structures known as G-quadruplexes. G-quadruplexes consist of four tracts of guanylates arranged in parallel or antiparallel strands that are aligned in stacked G-quartet planes. The structure is further stabilized by Hoogsteen hydrogen bonds and monovalent cations centered between the planes. https://safeersappliancers.shop/product-category/bosch-dig97im50b-serie-4-built-in-90cm-3-speeds-b-island-cooker-hood-stainless/