Amino Acids, Peptides, and Proteins

Flashcards covering key concepts related to amino acids, peptides, and protein structures.

Leucine

An amino acid classified as nonpolar.

Histidine

An amino acid classified as basic.

Phenylalanine

An amino acid classified as nonpolar.

Serine

An amino acid classified as polar neutral.

N-terminal

The end of a polypeptide chain that has a free amino group.

C-terminal

The end of a polypeptide chain that has a free carboxyl group.

Asparagine

A polar amino acid that is more likely to be found on the exterior of a protein.

Isoleucine

A nonpolar amino acid that is more likely to be found on the interior of a protein.

Glutamate

An acidic amino acid that is more likely to be found on the exterior of a protein.

Secondary structure

Part of a protein where the backbone exhibits a coiled structure due to hydrogen bonding.

Tertiary structure

The overall three-dimensional shape of a protein, including the folding of polar and nonpolar amino acids.

Collagen

A fibrous protein that is a component of bones, cartilage, tendons, and ligaments.

Structural protein

The functional class of proteins to which collagen belongs.

Trypsin

A protease that cleaves on the C-terminal side of lysine and arginine in proteins.

Met-Gly-Phe Gly Arg Ala-Tyr-Met-Ser-Asp-His-Lys

A peptide chain that produces fragments after being treated with trypsin.