Ribonuclease, often abbreviated as RNase, is an enzyme that catalyzes the degradation of ribonucleic acid (RNA). It plays a crucial role in various biological processes, including the regulation of gene expression and the removal of damaged RNA molecules. By breaking down RNA into smaller components, ribonuclease helps maintain cellular health and function. There are several types of ribonucleases, each with specific functions and mechanisms. For example, RNase A is a well-studied variant that cleaves RNA at specific sites, making it useful in molecular biology research. Understanding ribonucleases is essential for advancements in genetics and biotechnology.