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AMINO ACID

Discussion in 'Biochemistry' started by shabirullah, Feb 3, 2014.

  1. shabirullah

    shabirullah Well-Known Member

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    We are generally dealing with 20 amino acid, but you people should know that there are two more amino acid viz
    Selenocysteine (21st)
    Pyrrolysine (22nd)
     

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  2. Ron298

    Ron298 Well-Known Member

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    I want to add some info.

    In general, all amino acids are denoted with their three-letter symbol or their one-letter symbol.

    Selenocysteine : Sec / U
    Pyrrolysine : Pyl / O

    Also, their structures (radical groups) are :

    Selenocysteine : - CH2 - SeH
    Pyrrolysine : - CH2 - CH2 - CH2 - CH2 - NH - CO - 1-Pyrroline - CH3
     

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