20 Amino Acids - Essential and Non Essential Amino Acid Function and Sequence

   
Amino acids are the building blocks (monomers) of proteins. 20 different amino acids are used to synthesize proteins. The shape and other properties of each protein is dictated by the precise sequence of amino acids in it.

All types of physiological processes relating to sport - energy, recovery, muscle / strength gains and fat loss, as well as mood and brain function - are intimately and critically linked to amino acids. It's no wonder amino acids have become major players in athletes' supplementation, especially among bodybuilders.

Each amino acid consists of an alpha carbon atom to which is attached

  • a hydrogen atom
  • an amino group (hence "amino" acid)
  • a carboxyl group (-COOH). This gives up a proton and is thus an acid (hence amino "acid")
  • one of 20 different "R" groups. It is the structure of the R group that determines which of the 20 it is and its special properties.

List of Amino Acids and their Abbreviation

Nonpolar Amino Acids (hydrophobic)

Amino Acids Three letter code Single letter code
Glycine Gly G
Alanine Ala A
Valine Val V
Leucine Leu L
Isoleucine Ile I
Methionine Met M
Phenylalanine Phe F
Tryptophan Trp W
Proline Pro P

Polar Amino Acids (hydrophilic)

Amino Acids Three letter code Single letter code
Serine Ser S
Threonine Thr T
Cysteine Cys C
Tyrosine Tyr Y
Asparagine Asn N
Glutamine Gln Q

Electrically Charged Amino Acids (negative and hydrophilic)

Amino Acids Three letter code Single letter code
Aspartic acid Asp D
Glutamic acid Glu E

Electrically Charged Amino Acids (positive and hydrophilic)

Amino Acids Three letter code Single letter code
Lysine Lys K
Arginine Arg R
Histidine His H







 

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Related Articles on Aminoacids
Amino Acids Guide
Glycine
Alanine
Valine
Leucine
Isoleucine
Methionine
Phenylalanine
Tryptophan
Proline
Serine
Threonine
Cysteine
Tyrosine
Asparagine
Glutamine
Aspartic acid
Glutamic acid
Lysine
Arginine
Histidine
Citrulline
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