A trans-acting regulatory product necessary for expression of the Drosophila melanogaster 68C glue gene cluster

Cell. 1984 Nov;39(1):149-56. doi: 10.1016/0092-8674(84)90200-9.

Abstract

The mutation l(1)npr-1 is located at cytological location 2B5 on the X chromosome in Drosophila melanogaster. We have found that this mutation causes absence of the normal product of the 2B5 locus and that it has the following phenotypes: the 68C glue puff on the third chromosome does not regress when mutant salivary glands are cultured in the presence of ecdysterone; the three 68C glue protein mRNAs are not synthesized; and a transformed Drosophila strain carrying both a normal resident 68C Sgs-3 gene and an introduced functional Sgs-3 gene with only a few kb of flanking sequences expresses neither Sgs-3 RNA if the l(1)npr-1 mutation is crossed into the stock. Thus the normal product of the l(1)npr-1 gene is required for regression of the 68C puff, and the l(1)npr-1 gene product allows expression of the Sgs-3 gene by interacting, either directly or indirectly, with DNA sequences near this glue protein gene.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Cells, Cultured
  • Chromosomes / physiology
  • Drosophila melanogaster / genetics*
  • Ecdysterone / pharmacology
  • Gene Expression Regulation*
  • Genes*
  • Nucleic Acid Hybridization
  • RNA / isolation & purification
  • RNA, Messenger / genetics
  • Salivary Glands / physiology
  • Salivary Proteins and Peptides / genetics*

Substances

  • RNA, Messenger
  • Salivary Proteins and Peptides
  • Ecdysterone
  • RNA