| Literature DB >> 17214986 |
Suk Namgoong1, Kelly Sheppard, R Lynn Sherrer, Dieter Söll.
Abstract
The important identity elements in tRNA(Gln) and tRNA(Asn) for bacterial GatCAB and in tRNA(Gln) for archaeal GatDE are the D-loop and the first base pair of the acceptor stem. Here we show that Methanothermobacter thermautotrophicus GatCAB, the archaeal enzyme, is different as it discriminates Asp-tRNA(Asp) and Asp-tRNA(Asn) by use of U49, the D-loop and to a lesser extent the variable loop. Since archaea possess the tRNA(Gln)-specific amidotransferase GatDE, the archaeal GatCAB enzyme evolved to recognize different elements in tRNA(Asn) than those recognized by GatDE or by the bacterial GatCAB enzyme in their tRNA substrates.Entities:
Mesh:
Substances:
Year: 2007 PMID: 17214986 PMCID: PMC1808439 DOI: 10.1016/j.febslet.2006.12.033
Source DB: PubMed Journal: FEBS Lett ISSN: 0014-5793 Impact factor: 4.124