But as far as their structure is concerned, these RNAs all share the same basic single-stranded chemical structure with, in some cases, higher-order structures obtained through complementary base ...

Symbols, formulae and equations Learn how symbols, formulae and equations help chemists to explain chemical reactions in detail. The periodic table Revise the history, patterns and structure of ...

This structure has two helical chains each coiled round the same axis (see diagram). We have made the usual chemical assumptions, namely, that each chain consists of phosphate di-ester groups ...