Some useful drugs consist of peptides acting on their protein targets. To make them more efficient and stable, scientists have found a way to replace crucial segments of the peptides with ureido units ...

Membrane protein folding and oligomerization often involve interactions between lipid solvated monomeric alpha-helices, and further associations of the helices into higher order states. The two states ...

Most of the amino acids in hemoglobin form alpha helices, connected by short non-helical segments. (Hemoglobin has no beta strands and no disulfide bonds.) A rainbow coloring scheme from the ...