Search for dissertations about: "Polytene nuclei."

Found 3 swedish dissertations containing the words Polytene nuclei..

2. 1. Pre-mRNA processing in the polytene nuclei of chironomus tentans

   Author : Göran Baurén; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Pre-mRNA processing; Organization of splicing factors; Cotranscriptionalsplicing; Transcription termination; Chironomus tentans; Polytene nuclei.;

   Abstract : Gene expression of protein encoding genes in eukaryotic cells requires extensive intranuclear maturation processing of the transcribed pre-mRNA. Three such processes are known to occur. The 5' end is capped and the 3' end is determined by cleavage and polyadenylation. READ MORE

4. 2. Molecular structure and intracellular location of five RNA : associated proteins in the salivary glands of the dipteran Chironomus tentans

   Author : Sun Xin; Karolinska Institutet; Karolinska Institutet; []
   Keywords : hnRNPs; RNA-binding domains; shuttling proteins; non-shuttling proteins; nucleo-cytoplasmic transport; SR proteins;

   Abstract : The structure and intracellular flow of specific RNA-associated proteins have been characterized in the salivary gland cells in the dipteran Chironomus tentans. These cells contain four polytene chromosomes (I-IV), two of which harbour a nucleolus. READ MORE

5. 3. Assembly and transport of messenger and ribosomal RNP particles in the dipteran Chironomus tentans

   Author : Teresa Soop; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Gene expression in eukaryotic organisms commences with the synthesis of a precursor RNA, which has to be extensively processed to yield a mature RNA molecule. In addition to processing, the RNA molecule needs to associate with a proper set of proteins. READ MORE