RNA turnover is a crucial cellular process that regulates the levels of RNA molecules, ensuring proper gene expression by balancing RNA synthesis and degradation. It involves various pathways and enzymes that selectively degrade RNA, thereby influencing cellular responses and adaptation to environmental changes.

RNA Turnover

Cellular process

Levels of RNA molecules

Gene expression is the process by which information from a gene is used to synthesize a functional gene product, typically proteins, which ultimately determine cellular function and phenotype. This process is tightly regulated at multiple levels, including transcription, RNA processing, translation, and post-translational modifications, to ensure proper cellular function and response to environmental cues.

Gene Expression

RNA synthesis, also known as transcription, is the process by which a DNA template is used to produce a complementary RNA strand, playing a crucial role in gene expression. This process involves the enzyme RNA polymerase and occurs in the nucleus of eukaryotic cells or the cytoplasm of prokaryotic cells.

RNA Synthesis

RNA degradation is a crucial cellular process that regulates gene expression by controlling the levels of RNA molecules, thus influencing protein synthesis and cellular responses. This process involves a variety of mechanisms and pathways that ensure the removal of faulty, unnecessary, or excess RNA, maintaining cellular homeostasis and function.

RNA Degradation

Pathways and enzymes

Selective RNA degradation

Cellular responses are the ways in which cells react to external stimuli, involving a series of molecular and biochemical events that can lead to changes in cell behavior, function, or state. These responses are critical for maintaining homeostasis, adapting to environmental changes, and ensuring survival in multicellular organisms.

Concepts

Your Lessons