Gubenko, I.S., Subbota, R.P., Semeshin, V.F. (1991). 'Neobychnyi' aktiviruemyi v usloviiakh stressa puf 20CD Drosophila virilis: tsitologicheskaia lokalizatsiia teplochuvstvitel'nogo lokusa i osobennosti reaktsii na teplovoi shok. [Unusual 20CD Drosophila virilis stress-puff: cytological localization of heat sensitive locus and some peculiarities of heat shock response.]  Genetika, Moscow 27(1): 61--69.

FBrf0054221

Research paper

Using a series of chromosome aberrations heat shock (hs) inducible site of 20CD Drosophila virilis hs puff was cytologically localized in distal 20C subdivision: the hs puff was not observed in chromosome 2 carrying Df(2)eb deficiency; the bands in proximal 20D subdivision are unable to provide autonomous activation by hs in aberrant chromosomes having this deficiency or the In(2)eb inversion. Electron microscopical analysis of successive stages of 20CD development showed the hs puff to be initially formed from the right part of 20C 6-7 band. Neighbouring bands of 20C and 20D regions in the most developed puff are only partially decondensed and were detected as discrete compact chromatin clumps.