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- Title
Functional studies of the BTB domain in the Drosophila GAGA and Mod(mdg4) proteins.
- Authors
Read, D; Butte, M J; Dernburg, A F; Frasch, M; Kornberg, T B
- Abstract
The BTB/POZ (BTB) domain is an approximately 120 residue sequence that is conserved at the N-terminus of many proteins in both vertebrates and invertebrates. We found that the protein encoded by a lethal allele of the Drosophila modifier of mdg4 [mod(mdg4)] gene has two mutated residues in its BTB domain. The identities of the residues at the positions of these mutations are highly conserved in the BTB domain family of proteins, and when the corresponding mutations were engineered into the BTB domain-containing GAGA protein, the activity of GAGA as a transcription activator in a transient transfection assay was severely reduced. The functional equivalence of the BTB domains was established by showing that the BTB domain of the mod(mdg4) protein can effectively substitute for that of GAGA.
- Publication
Nucleic acids research, 2000, Vol 28, Issue 20, p3864
- ISSN
1362-4962
- Publication type
Journal Article
- DOI
10.1093/nar/28.20.3864