| Literature DB >> 6195341 |
A Alonso, J L Jorcano, E Beck, E Spiess.
Abstract
We describe here the organization of DNA sequences complementary to Drosophila melanogaster U2 small nuclear (sn) RNA. From a genomic library we isolated two recombinants containing two genes each. Genomic reconstruction experiments and Southern analysis revealed that D. melanogaster possesses only four to five U2 snRNA genes or very closely related sequences. The nucleotide sequence of one of the clones analysed shows 77% homology with rat U2 snRNA. A stretch of 12 nucleotides that has been implicated in heterogeneous nuclear RNA splicing is conserved between rat and Drosophila. The genomic organization of these genes is very similar in different melanogaster strains but diverges highly in different Drosophila species.Entities:
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Year: 1983 PMID: 6195341 DOI: 10.1016/s0022-2836(83)80165-x
Source DB: PubMed Journal: J Mol Biol ISSN: 0022-2836 Impact factor: 5.469