DNA topoisomerase 1 is a topoisomerase enzyme that catalyzes ATP-independent breakage of single-stranded DNA, followed by passage and rejoining. It catalyzes reaction that leads to the conversion of one topological isomer of DNA to another. - [Read more]

Biology Disease is a life science resource portal with information, links and pictures on human, animal, plant and cell biology, anatomy, histology and disease. Find links, protocols, methods and techniques on microbiology, molecular biology, bioinformatics, protein, genetics, immunology and cells. - [Read more]