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Example sentences for: trna
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Subclass Ia includes diseases arising from mutations in mtDNA genes encoding subunits of proteins involved in oxidative phosphorylation, mitochondrial tRNA genes and mitochondrial rRNA genes.
Release 1 reported 292 tRNAs [ 3]; two tRNA genes were deleted as a result of sequence finishing resolving repeated regions of the genome.
To hybridize the arrays, purified and labeled cDNA targets were dissolved in 100 μl total volume of ExpressHyb solution (Clontech, Palo Alto, CA) containing 8 μg of polydA 40-60 (Amersham Pharmacia), 2 μg of yeast tRNA (Gibco-BRL), 10 μg of human Cot I DNA (Gibco-BRL).
Structural comparisons using the DALI program [ 20], indicated that the core fold shared by the KilA-N and APSES domains is more distantly related to the LAGLIDADG site-specific DNA endonucleases and the amino-terminal domain of the tRNA splicing endonucleases (TEN domain) (Figure 1b) [ 21].
In particular, a series of nested deletions of the P6 stem-loop have been shown to partially or completely compromise ribozyme activity [ 15 ] . More importantly, either magnesium or the tyrosyl tRNA synthetase from Neurospora mitochondria (CYT18) can suppress many of these defects [ 16 17 ] . Previous studies with other introns have also revealed that deletion of the P5 stem-loop can modulate ribozyme activity [ 18 19 ] . We hypothesized that sites where deletions modulated ribozyme activity might also prove to be sites where aptamer conformational changes would modulate ribozyme activity.
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