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any of a large group of nitrogenous organic compounds that are essential constituents of living cells

Amino Acid

organic compounds containing an amino group and a carboxylic acid group


Two amino acids bonded together


loss of normal shape of a protein due to heat or other factor

Secondary Protein

Consists of regular, repeated spatial patterns in different regions of the polypeptide chain, forming alpha helixes or beta pleated sheets.

Peptide Bond

the primary linkage of all protein structures


a peptide containing 10 to more than 100 amino acids

Primary Protein

amino acids in linear order, for the protein to function, it must have the correct collection of amino acids arranged in precise order ex. amino acid changes in hemoglobin: result is sickle cell anemia

Tertiary Protein

"overall 3D shape" --either globular/fibrous. Held in shape by hydrogen bonding or sulfur bonds between amino acids called a disulfide bridge

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