Genetics - A. V. Sivolob 2008

Gene Expression
Gene Expression in Eukaryotes

Unlike prokaryotes, eukaryotic mRNA is synthesized during METABOLISM/31.html">Transcription within the Cell Nucleus and subsequently transported to the Cytoplasm. Consequently, Protein Synthesis occurring in the cytoplasm and transcription are distinct stages of Gene Expression separated in both space and time. Another fundamental difference lies in the mosaic Structure OF THE eukaryotic gene (see Chapter 1): the primary transcript produced cannot serve directly as a template for protein synthesis—at least because it contains introns. The maturation of pre-mRNA to yield a functional template is termed Processing. All processing events take place co-transcriptionally on the RNA polymerase complex; in other words, eukaryotic mRNA Processing is an integral part of transcription.



Last update: 11/08/2026

Editorial and Educational Adaptation: This material has been compiled based on the primary/original source text. The project team performed an editorial review, corrected technical inaccuracies, structured sections, and adapted the content for an educational format.

What was processed:

  • elimination of formatting defects (OCR errors, structural breaks, corrupted characters);
  • editorial organization of content;
  • standardization of terminology in accordance with academic sources;
  • verification of factual statements against the original source text.

All mentions of the author, publication year, and origin of the primary text have been preserved in accordance with the source.