Wieland, C., Mann, S., von Besser, H., Saumweber, H. (1992). The Drosophila nuclear protein Bx42, which is found in many puffs on polytene chromosomes, is highly charged.  Chromosoma 101(): 517--525.

FBrf0055617

Research paper

The Drosophila nuclear protein Bx42 is present in a set of transcriptionally active puffs on polytene chromosomes. cDNA clones coding for this protein were isolated from a lambda gt11 expression library. The two Bx42 transcripts are ubiquitously expressed and are already detectable in early stages of development. The corresponding genomic region, in 8C7-8, was isolated and sequenced. Both transcripts direct the production of the same basic, highly charged 547 amino acid protein with a calculated 61.1 kDa molecular weight.