Amino Acids: The Building Blocks of Proteins
Amino acids are organic compounds that combine together to form proteins. They contain amino (NH2) and carboxyl (COOH) functional groups, along with a side chain (R group) specific to each amino acid. The general structure is H2NCHRCOOH. Based on their R groups, amino acids are generally classified into nonpolar (hydrophobic), polar (hydrophilic), and charged amino acids. Nonpolar ones include glycine, alanine, valine etc. Polar ones include serine, threonine etc. Positively charged (basic) ones include lysine, arginine etc. Negatively charged (acidic) ones include aspartic acid, glutamic acid etc.
Of the hundreds of different amino acids, only 20 are used by our body to synthesize proteins. These are further classified as essential and non-essential amino acids. Essential amino acids cannot be synthesized by the human body and must be obtained from dietary sources. They include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine. Non-essential amino acids can be synthesized in sufficient quantities in the human body. They include alanine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, proline, serine, tyrosine and arginine.
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Amino acids are organic compounds that combine together to form proteins. They contain amino (NH2) and carboxyl (COOH) functional groups, along with a side chain (R group) specific to each amino acid. The general structure is H2NCHRCOOH. Based on their R groups, amino acids are generally classified into nonpolar (hydrophobic), polar (hydrophilic), and charged amino acids. Nonpolar ones include glycine, alanine, valine etc. Polar ones include serine, threonine etc. Positively charged (basic) ones include lysine, arginine etc. Negatively charged (acidic) ones include aspartic acid, glutamic acid etc.
Of the hundreds of different amino acids, only 20 are used by our body to synthesize proteins. These are further classified as essential and non-essential amino acids. Essential amino acids cannot be synthesized by the human body and must be obtained from dietary sources. They include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine. Non-essential amino acids can be synthesized in sufficient quantities in the human body. They include alanine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, proline, serine, tyrosine and arginine.
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UNDERSTANDING THE BUILDING BLOCKS OF LIFE -AMINO ACIDS
Amino acids are the building blocks of proteins. They are organic compounds that combine together in long chains to form the basic structure and play important roles in the human b
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01:49 PM - Apr 18, 2025 (UTC)