pyrrolysine

(noun)

An amino acid found in methanogenic bacteria.

Related Terms

Examples of pyrrolysine in the following topics:

  • Amino Acid Synthesis

    • Selenocysteine and pyrrolysine are not encoded by the universal genetic code.
    • The remaining two, selenocysteine and pyrrolysine, are incorporated into proteins by unique synthetic mechanisms.
    • Pyrrolysine is used by some methanogenic archaea in enzymes that they use to produce methane.
    • Pyrrolysine (abbreviated as Pyl or O) is a naturally occurring amino acid similar to lysine, but with an added pyrroline ring linked to the end of the lysine side chain .
    • Pyrrolysine (abbreviated as Pyl or O) is a naturally occurring, genetically coded amino acid used by some methanogenic archaea and one known bacterium in enzymes that are part of their methane-producing metabolism.

  • The Central Dogma: DNA Encodes RNA and RNA Encodes Protein

    • The stop codon UAG is sometimes used by a few species of microorganisms to encode a 22nd amino acid called pyrrolysine (Pyl).