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. 1982;1(1):133–137. doi: 10.1002/j.1460-2075.1982.tb01136.x

A candidate gene for human U1 RNA.

H J Monstein, G Westin, L Philipson, U Pettersson
PMCID: PMC553007  PMID: 6201353

Abstract

Clones containing sequences complementary to the small nuclear RNA U1 were isolated from the human DNA library of Lawn et al. (1978). Three clones were studied by hybridization and restriction enzyme cleavage. The results showed that the inserts in all three clones were different and that each clone contains one single copy of a sequence which hybridizes to U1 RNA. The results revealed moreover that only one of the three clones contains all the cleavage sites which can be predicted from the known sequence of human U1 RNA, suggesting that the three clones comprise one candidate U1 gene and two pseudogenes. A fragment from the recombinant with the candidate U1 gene was subcloned in the pPR322 plasmid and part of its sequence was determined. The results showed that the subclone contains a sequence which matches that of the human U1 RNA perfectly. The sequence "TATAT" which often is found adjacent to RNA polymerase II start sites, was identified 33-37 base pairs upstream from the beginning of the U1 sequence. Two ten base pairs long, nearly perfect, direct repeats were also identified in the vicinity of the U1 sequence and an imperfect inverted repeat follows immediately after the U1 gene.

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Selected References

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