polynucleotide phosphorylase

Polynucleotide phosphorylase (PNPase) is an enzyme involved in RNA metabolism. It plays a role in the synthesis and degradation of RNA molecules, which are crucial for converting genetic information from DNA into proteins. RNA itself is a single-stranded polymer made of nucleotides, forming a backbone of alternating phosphate and ribose sugar residues. This process of creating RNA from DNA is called transcription and is catalyzed by enzymes like RNA polymerase. Some RNAs have direct roles in cellular functions, while others, like small nuclear RNAs (snRNAs), are involved in processes such as RNA splicing.12