Proteins have four levels of structure: primary (amino acid sequence), secondary (local folding patterns like alpha helices and beta sheets), tertiary (overall 3D shape), and quaternary (assembly of ...

The sequence of amino acids in the chain determines how the chain will fold up to make the protein, so different proteins have different three-dimensional shapes. The three-dimensional shape of a ...

Intrinsically disordered proteins (IDPs) do not attain a stable secondary or tertiary structure and rapidly change their ...

The siRNA associates with cellular proteins to form the RNA-induced ... 4,5 have demonstrated that mRNA target site secondary structure is of great importance for siRNA efficiency.

Scientists have for the first time looked deep into the protein structure that may determine our vision—and discovered that ...

tRNAs have a distinct cloverleaf secondary structure and an L-shaped tertiary ... highlights the fundamental role of tRNA in the essential process of protein synthesis. The basic structure and ...