Not exact matches
The mechanism of action for translation enhancing
elements is still obscure, particularly in the case of internal
ribosomal initiation sites.
Roughly 20 percent of the translation enhancing
elements functioned as internal
ribosomal initiation sites, again turning up primarily in non-coding genomic regions.
Partial copies of the extrachromosomal
ribosomal DNA (rDNA)
element are found at the ends of each chromosome, suggesting a novel telomere structure and the use of a common mechanism to maintain both the rDNA and chromosomal termini.
The 50 Mb houses no more than 25 essential loci and consists largely of satellite DNA sequences,
ribosomal genes, and transposable
elements (John and Miklos, 1988).