Foods that contain all of the essential amino acids are called complete proteins. Most animal products are complete proteins. Foods that contain proteins but do not contain all of the essential amino acids are called incomplete proteins. These include most plant proteins. Examples of incomplete proteins and their missing essential amino acids are listed in the table below: Food rice, wheat, oats beans. peas soy corn almonds, walnuts Amino Acid Deficiency lysine methionine, tryptophan methionine low in methionine lysine, tryptophan lysine, tryptophan A combining of two or more incomplete proteins that are deficient in different amino acids is a dietary strategy used to ensure the intake of all nine essential amino acids. When proteins are combined in this way, they are called complementary proteins. QUESTION: Which three foods (from the table above) could each be eaten with rice as a complementary protein? ANSWER: beans, peas, and soy EXPLANATION: Rice is deficient in lysine. Beans, peas, and soy ARE NOT deficient in lysine, so they would complement rice. Corn, almonds, and walnuts ARE deficient in lysine, so they would not complement rice.
Neutral Amino Acids
Amino acids which do not have any charge on them are neutral amino acids.
Globular Protein
The globular proteins refer to the shape of protein specifically spherical in nature apart from spherical form fibrous, disordered and membrane-bound proteins exist. These globular proteins are miscible in water and form a colloidal solution rather than other types which might not exhibit solubility. Many classes of the fold are found in globular proteins, which render them a sphere shape. Globular fold containing proteins usually are referred to by the term globin.
Dimer
Dimers are basic organic compounds, which are derivates of oligomers. It is formed by the combination of two monomers which could potentially be strong or weak and in most cases covalent or intermolecular in nature. Identical monomers are called homodimer, the non-identical dimers are called heterodimer. The method by which dimers are formed is known as “dimerization”.
Dipeptide
A dipeptide is considered a mixture of two distinct amino acids. Since the amino acids are distinct, based on their composition, two dipeptide's isomers can be produced. Various dipeptides are biologically essential and are therefore crucial to industry.
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