Q:

How many different kinds of amino acids make up proteins?

A:

Quick Answer

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:

    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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  • Q:

    How many amino acids are there?

    A:

    According to the ASU School of Life Sciences, 21 amino acids are used by the human body to build all the protein it needs. The exact number of universal amino acids may differ depending on the source, as some give 20 or 22 as alternative answers.

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