AdipoGen GE23077 A1 B1

Supplier:  AdipoGen AGCN20305M025

Chemical. CAS 752989-46-1, 752989-45-0752989-44-9. Formula C31H51N9O16, C31H49N9O16. MW 805.8803.8. Isolated from Actinomadura sp. Cyclic heptapeptide antibiotic. Potent and selective inhibitor of bacterial RNA polymerase RNAP. Inhibits Gram-positive Bacillus subtilis and Gram-negative Escherichia coli RNAPs with IC50 ~20nM, whereas it is not active on E. coli DNA polymerase or on eukaryotic wheat germ RNAP II IC50 values >100µM. Even though of its potent activity in vitro on purified bacterial RNAPs, it shows a narrow spectrum of antimicrobial activity in vivo on Gram-positive and Gram-negative bacteria, due to lack of memmbrane permeability. Acts at the level of transcription initiation. Binds directly to the bacterial RNA polymerase RNAP active-center i and i1 nucleotide binding sites, preventing the binding of initiating nucleotides and thereby preventing transcription initiation.

Catalog No. 50-256-2625