The total poly(A)-containing mRNA from mouse liver or Ehflich ascites carcinoma cells was annealed with denatured ds RNA prepared from heavy nuclear 3H-labeled pre-mRNA of the same tissue. The hybrids formed were detected by binding of complexes to poly(U)-Sepharose columns through the poly(A) of mR
Hybridization of mRNA and pre-mRNA with the sequences forming double-stranded structures in pre-mRNA
β Scribed by A. P. Ryskov; S. A. Limborska; G. P. Georgiev
- Publisher
- Springer
- Year
- 1973
- Tongue
- English
- Weight
- 225 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0301-4851
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β¦ Synopsis
About 25~o of the double-stranded sequences isolated from pre-mRNA are able to hybridize, after melting, with either mRNA or non-melted pre-mRNA. The retention of one branch of pre-mRNA hairpin in mRNA was suggested. It was also found that in addition to the hairpin-like structures comprising about 3~ of the total sequences another 15~ of the pre-mRNA sequences can form double-stranded structures upon annealing over a broad interval of Cot values.
π SIMILAR VOLUMES
Nuclear pre-mRNAs must be precisely processed to give rise to mature cytoplasmic mRNAs. This maturation process, known as splicing, involves excision of intron sequences and ligation of the exon sequences. One of the major problems in understanding this process is how splice sites, the sequences whi
The quantitative changes of double-stranded RNA components of nuclear ribonucleo-protein particles containing pre-mRNA was investigated in the course of incubation of particles at 37 degrees C. The incubation of purified nuclear particles revealed the fragmentation of long double-stranded RNA sequen