Levene made his initial proposal in 1919, discrediting other suggestions that had been put forth about the structure of nucleic acids ... of how the different elements in thymine and guanine ...

This schematic shows the secondary structure of two aptamers. The complex shapes formed by base pairing (black lines connecting G-C and A-T bases) allow aptamers to bind their targets with high ...

However, when cells are replicating, DNA forms organized structures called chromosomes ... of base pairs is a compound molecule called a nucleic acid. Living organisms are constantly building ...

What is the biggest difference between using nanopore technology for protein sequencing versus nucleic acid sequencing ... when working with 20 amino acids compared to four nucleotides, not to mention ...

Uracil forms hydrogen bonds with adenine in RNA, contributing to the molecule's structure and function. (Image: Public Domain) Uracil was first discovered in 1900 by the Italian chemist Alberto Ascoli ...