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Physical Map of Two D. melanogaster DNA Segments Containing Sequences Coding for the 70,000 Dalton Heat Shock Protein

Authors
Moran, Larry
Mirault, Marc-Edouard
Lis, John
Schedl, Paul
Artavanis-Tsakonas, Spyros
Gehring, Walter J.
Published in Cell. 1979, vol. 17, no. 1, p. 1-8
Abstract The isolation of the two hybrid plasmids 56H8 and 132E3, which contain D. melanogaster (Dm) DNA sequences complementary to the mRNA coding for the 70,000 dalton heat shock protein, has been reported (Schedl et al., 1978). Here we compare the sequence arrangement in the two cloned Dm DNA segments by restriction, cross-hybridization and heteroduplex analysis. The results show that the two cloned DNA segments derive from nonoverlapping regions of the Dm genome; that they contain homologous regions present once in 56H8 and twice in 132E3; and that each homologous region is composed of three distinct contiguous sequence elements, x, y and z, which together define a 3 kb common unit. While the 2.5 kb z elements show a high degree of sequence homology in all three common units, the three x and y elements display an intriguing relationship. The localization of the mRNA coding sequences within each of these common units is presented in the accompanying paper (Artavanis-Tsakonas et al., 1979).
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MORAN, Larry et al. Physical Map of Two D. melanogaster DNA Segments Containing Sequences Coding for the 70,000 Dalton Heat Shock Protein. In: Cell, 1979, vol. 17, n° 1, p. 1-8. doi: 10.1016/0092-8674(79)90289-7 https://archive-ouverte.unige.ch/unige:127557

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