new amino acid

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From: pauld@exploratorium.edu
Date: Sun May 26 2002 - 17:16:21 PDT 

Message-Id: <200205270016.g4R0GFp25679@isaac.exploratorium.edu>
From: pauld@exploratorium.edu
Subject: new amino acid
Date: Sun, 26 May 2002 17:16:15 US/Pacific

Hi Pinholers
Here's a note from one of my science writer friends.

**

According to the current issue of Science: "Two complementary reports
(1, 2), on pages 1459 and 1462 of this issue, provide compelling
evidence that the genetic code of certain Archaea and eubacteria encodes
a 22nd amino acid. This nonstandard amino acid, called pyrrolysine, is
encoded by the RNA nucleotide triplet UAG, a stop codon that halts
translation of mRNA."

Dean Haycock

Paul D

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