Reference Report

Reference
Citation	Misra, S., Rio, D.C. (1990). Cytotype control of Drosophila P element transposition: the 66 kd protein is a repressor of transposase activity. Cell 62(): 269--284. (Export to RIS)
FlyBase ID	FBrf0051364
Publication Type	Research paper
PubMed ID	2164887
PubMed Abstract	Drosophila P transposable elements encode two proteins, an 87 kd transposase protein and a 66 kd protein that has been hypothesized to repress transposition. We have made germline transformants carrying modified P element derivatives that encode only the 66 kd protein and shown that these elements repress transposase activity in both the germline and the soma. The position of these elements in the genome quantitatively affected their ability to negatively regulate transposase and to express the 66 kd protein. Single 66 kd element-containing strains did not exhibit the maternal inheritance of P cytotype characteristic of P strains. However, we demonstrated that a true P strain produced higher levels of the 66 kd protein during oogenesis than single 66 kd P elements. Thus, the expression of the 66 kd repressor during oogenesis may be a major determinant of the maternal effect of P cytotype.
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Language of Publication	English
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Publication Type	Journal
Abbreviation	Cell
Title	Cell
Publication Year	1974-
ISBN/ISSN	0092-8674
Data from Reference
Alleles (13)
	P\T^66.hs P\T⁶⁶ P\T^66C1 P\T^66C2.hs P\T^66D1.hs P\T^66S P\T^66W P\T^hs.PR ry^+t7.2 sn⁽⁺⁾ sn^e sn^w w^+t10.7
Constructs (6)
	P{66K} P{hs66K} P{hsP} P{Δ2-3} pP{66K} pP{hs66K}
Genes (5)
	P\T pa ry sn w
Insertions (8)
	P{66K}C1 P{66K}S P{66K}T P{66K}W P{hs66K}A1 P{hs66K}C2 P{hs66K}D1 P{wA^R}10D
Natural transposons (1)
	P-element