Belikov, S.V., Dzherbashyajan, A.R., Preobrazhenskaya, O.V., Karpov, V.L., Mirzabekov, A.D. (1990). Chromatin structure of Drosophila melanogaster ribosomal genes. FEBS Lett. 273(): 205--207.
FlyBase ID
FBrf0051781
Publication Type
Research paper
Abstract
The chromatin structure of ribosomal genes of D. melanogaster has been studied by crosslinking proteins to DNA. We found that a number of histone contacts with DNA through histidine in the approximately 1 kb-long region surrounding the transcription initiation site, coding regions and the region of 240 bp-long repeats from the intergenic spacers (Alu-repeats) were weakened as compared to the inactive chromatin of the type II insertion. A protein with the molecular mass of 50 kDa (p50), associated with all DNA sequences analysed, has been discovered. Another protein with molecular mass of about 70 kDa (p70) has been found to be specific only for the Alu-repeats.
