美国TopoGEN  www.topogen.com
TopoGEN 公司是一家专门为拓扑酶研究提供试剂和试剂盒。试剂盒可以有效地分析拓扑异构酶 I ， II 和旋转酶，分析细胞内的拓扑抑制以及描绘拓扑异构酶抑制剂的特性。另外公司还提供 DNa c底物，拓扑抑制剂和抗体等。 

TopoGEN is a research diagnostic company that provides innovative products for researchers working with topoisomerases and engaged in mechanism based drug discovery. Kits are available to identify topoisomerase active drugs for use in cancer chemotherapy and antibacterial applications. The company also provides kits for assaying both prokaryotic and eukaryotic topoisomerases (type I, II, IV, gyrase), both in vitro and in vivo. We also offer a complete line of DNA substrates and DNA cleavage targets, topo inhibitors, antibodies, and kit replenishment reagents. The company was founded by researchers working with these enzymes and who can offer hands on assistance with your topoisomerase research, whether basic, clinical, applied or translational. TopoGEN was incorporated in 1991 and has a dedicated clientele. We offer substantial product support, data interpretation and consultation advice. We also provide contract screening services for topo poisons. Please enquire.