Section 10
Chapter 9,840

Escherichia coli tRNA (Asp) recognition mechanism differing from that of the yeast system

Nameki, N.; Tamura, K.; Himeno, H.; Asahara, H.; Hasegawa, T.; Shimizu, M.

Biochemical and Biophysical Research Communications 189(2): 856-862


ISSN/ISBN: 0006-291X
PMID: 1472058
DOI: 10.1016/0006-291x(92)92282-3
Accession: 009839401

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Various tRNA transcripts were constructed to study the identity elements of Escherichia coli tRNA-Asp. Base substitutions from G-34 to U-34 at the first position of the anticodon, and from U-35 to A-35 at the second, severely impaired the aspartate charging activity. The activity was also decreased, but in a more moderate fashion, by base changes at G-2-G-71, C-36 and C-38. Identity nucleotides of tRNA-Asp are distributed in a different fashion between E. coli and yeast, which occur at the second base pair of the acceptor stem, G-10-U-25 base pair in the D-stem and 3' half of the anticodon loop.

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