Q:

How many different kinds of amino acids make up proteins?

A:

There are 20 different common amino acids that act as the building block for proteins. Humans are able to produce 10 of the amino acids, but must obtain the other 10 through their diet.

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Full Answer

Amino acids are the most basic building block of a protein. The twenty amino acids are: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, proline, serine, threonine, tryptophan, tyrosine, and valine. All amino acids contain an alpha carbon that is connected to an amino functional group, a carboxylic acid functional group, and the R-group unique to each amino acid.

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Related Questions

  • Q:

    How many different amino acids are there?

    A:

    There are 20 different kinds of amino acids. Adult humans can only produce 11 of them, so the other nine must be consumed via diet. The amino acids that humans cannot produce are called essential amino acids because they are needed for the body to function.

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  • Q:

    What is an amino acid pool?

    A:

    An amino acid pool is the collection of amino acids available in an organism's cells at a given time, based on the proteins and fats recently consumed by the organism. Both plants and animals have amino acid pools, which are replenished whenever the organisms take in nourishment. Amino acids are not stored in cells over long period periods of time, so the makeup of an amino acid pool shifts regularly.

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  • Q:

    How many amino acids exist?

    A:

    There are 20 amino acids that are active in the human body. In addition to these, there are approximately 250 non-protein-forming amino acids. There are three main types of amino acids that the body processes: essential, nonessential and semi-essential.

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  • Q:

    How many different kinds of monomers are there in proteins?

    A:

    Proteins contain 20 different types of monomers, also known as amino acids. All 20 monomers have a basic structure of a central carbon, an amino group, a carboxyl or acid group, a hydrogen and a unique side chain.

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