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2. Amino acid - Wikipedia

   en.wikipedia.org/wiki/Amino_acid

   Codon–amino acids mappings may be the biological information system at the primordial origin of life on Earth. [122] While amino acids and consequently simple peptides must have formed under different experimentally probed geochemical scenarios, the transition from an abiotic world to the first life forms is to a large extent still unresolved ...

3. File : Common Periodic Table of Codons & Amino Acids.jpg

   en.wikipedia.org/wiki/File:Common_Periodic_Table...

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4. DNA and RNA codon tables - Wikipedia

   en.wikipedia.org/wiki/DNA_and_RNA_codon_tables

   A codon table can be used to translate a genetic code into a sequence of amino acids. [1] [2] The standard genetic code is traditionally represented as an RNA codon table, because when proteins are made in a cell by ribosomes, it is messenger RNA (mRNA) that directs protein synthesis. [2] [3] The mRNA sequence is determined by the sequence of ...

5. Glycine - Wikipedia

   en.wikipedia.org/wiki/Glycine

   Glycine (symbol Gly or G; [6] / ˈ ɡ l aɪ s iː n / ⓘ) [7] is an amino acid that has a single hydrogen atom as its side chain. It is the simplest stable amino acid. Glycine is one of the proteinogenic amino acids. It is encoded by all the codons starting with GG (GGU, GGC, GGA, GGG). [8]

6. Essential amino acid - Wikipedia

   en.wikipedia.org/wiki/Essential_amino_acid

   The distinction between essential and non-essential amino acids is somewhat unclear, as some amino acids can be produced from others. The sulfur-containing amino acids, methionine and homocysteine, can be converted into each other but neither can be synthesized de novo in humans. Likewise, cysteine can be made from homocysteine but cannot be ...

7. List of amino acids - Wikipedia

   en.wikipedia.org/wiki/List_of_amino_acids

   Amino acids are listed by type: Proteinogenic amino acid; Non-proteinogenic amino acids This page was last edited on 5 January 2020, at 17:16 (UTC). Text is ...

8. Biological roles of the elements - Wikipedia

   en.wikipedia.org/wiki/Biological_roles_of_the...

   Sulfur is essential and ubiquitous, partly because it is part of the amino acids cysteine and methionine. Many metals that appear as enzyme cofactors are bound by cysteine, and methionine is essential for protein synthesis. Toxic in some forms. tantalum: 73: 1c: Has no known biological role, but is biocompatible, used in medical implants, e.g ...

9. Protein primary structure - Wikipedia

   en.wikipedia.org/wiki/Protein_primary_structure

   Protein sequence is typically notated as a string of letters, listing the amino acids starting at the amino-terminal end through to the carboxyl-terminal end. Either a three letter code or single letter code can be used to represent the 22 naturally encoded amino acids, as well as mixtures or ambiguous amino acids (similar to nucleic acid ...