sigma, a repetitive element found adjacent to tRNA genes of yeast.

AUTOR(ES)

del Rey, F J

RESUMO

sigma is a DNA element of about 340 base pairs (bp) that is repeated many times in the yeast genome. The element has 8-bp inverted repeats at its ends and is flanked by 5-bp direct repeats. The 5-bp repeats are different for each sigma and have no homology with the ends of the sigma sequence. sigma is located 16 or 18 bp from the 5' end of several tRNA genes. Southern analysis of different yeast strains shows that the pattern of hybridization is different even for closely related strains.

Documentos Relacionados

• Consistent association between sigma elements and tRNA genes in yeast.
• Ty1 and delta elements occur adjacent to several tRNA genes in yeast.
• Insertion of a repetitive element at the same position in the 5'-flanking regions of two dissimilar yeast tRNA genes.
• Sigma elements are position-specific for many different yeast tRNA genes.
• Nucleotide sequences and secondary structures of four tRNA genes in mitochondrial DNA of Hansenula wingei yeast.