Safe keeping the message: mRNP complexes tweaking after transcription.

Area of Science:

• Molecular Biology
• Cell Biology
• Developmental Biology

Background:

• Messenger ribonucleoprotein particles (mRNPs) are essential for post-transcriptional gene regulation in eukaryotes.
• mRNPs mediate RNA processing, localization, storage, translation, and degradation.
• The formation of mRNPs is coupled with transcription and influences protein abundance and distribution.

Purpose of the Study:

• To review current knowledge on the mechanisms of post-transcriptional control mediated by mRNP formation.
• To highlight differences in underlying mechanisms across various organisms.
• To present a model for mRNP-driven post-transcriptional regulation and its applications.

Main Methods:

• Literature review of mRNP formation and function.
• Analysis of examples in Drosophila, yeast, and mammalian cells.
• Inclusion of recent findings on RNP formation in *Nicotiana tabaccum*.

Main Results:

• mRNPs are key determinants of asymmetric mRNA distribution, influencing cell fate and patterning.
• Examples include Drosophila embryo patterning, yeast cell polarization, and mammalian neural cell growth.
• Unique RNP formation mechanisms in *Nicotiana tabaccum* male gametophytes are discussed.

Conclusions:

• mRNPs play a fundamental role in orchestrating gene expression and cellular development.
• Understanding mRNP mechanisms can lead to advancements in developmental biology and food quality.
• Further research into RNP networks is encouraged for novel applications.