protein

Amino acids are classified according to the structures and properties of their side chains

Amino acids are uncharged at neutral pH

Amino acids in proteins are mainly in the D-configuration

Twenty four amino acids are commonly used in protein synthesis

The arrangement of two or more polypeptide subunits into a single functional complex

The folding of the polypeptide backbone in three-dimensional space.

The interaction of amino acid side chains

The sequence of amino acids in a polypeptide chain

Proline

Glycine

leucine

none of the above

hydrogen bond

peptide bond

ionic bond

glycosidic bond

2 amino acids and 1 peptide bond

2 amino acids and 2 peptide bonds

2 amino acids and 3 peptide bonds

2 amino acids and 4

α-helix

β-pleated sheet

β-pleated sheet paralle

β-pleated sheet non parallel

α-helix

β-pleated sheet

β-helix

none of these

cystine residues that are close together

proline residues that are close together

cysteine residues that are close together

histidine residues that are close together

serine and alanine

Alanine and valine

serine and threonine

Valine and isoleucine

Tryptophan

cysteine

histidine

arginine