RNA-protein complexes are structures formed when RNA molecules bind to proteins. These complexes play crucial roles in various biological processes, including gene expression, regulation, and RNA processing. The interaction between RNA and proteins is essential for the proper functioning of cells, as it helps in translating genetic information into functional proteins. One well-known type of RNA-protein complex is the ribosome, which synthesizes proteins by translating messenger RNA (mRNA) sequences. Other examples include spliceosomes, which are involved in removing non-coding regions from pre-mRNA, and RNA-induced silencing complexes (RISC), which regulate gene expression by targeting specific mRNA for degradation.