Membrane proteins are key components of living cells. They constitute one-third of the ORFs of virtually all genomes, perform crucial roles, and are targeted by a huge number of drugs. When ...

The quaternary protein structure refers to the orientation and arrangement of subunits in proteins with multi-subunits. This is only relevant for proteins with multiple polypeptide chains.

BIOLOGICAL properties of proteins depend on the higher levels of their structure, determined by the primary structure. As has been shown by Fisher1, the knowledge of the amino-acid composition ...

Proteins are built from a set of 20 standard amino acids, each with a specific side chain that gives it unique chemical properties. Amino acids are joined together by peptide bonds to form polypeptide ...

Protein structure and design software gets the Chemistry Nobel ... Most of those 20 have distinctive chemical properties: some are acidic, others basic; some may be negatively charged, ...