P11387

TOP1 also known as DNA topoisomerase I, Topo I is a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. TOP1 plays a crucial role in maintaining DNA structure integrity during cellular processes such as replication, transcription, and recombination. By introducing a transient break in one strand of the DNA helix, TOP1 alleviates torsional strain that arises ahead of the replication fork, preventing DNA supercoiling and ensuring proper DNA function. This enzymatic activity is vital for cellular health, as dysregulation of TOP1 can lead to genomic instability and has been implicated in various cancers, making TOP1 a significant target for anticancer therapies. TOP1 interacts with several other proteins, including transcription factors and repair proteins, which further underscores TOP1′s importance in cellular processes and highlights TOP1′s potential as a therapeutic target.