Antibiotic Inhibitor

OM-4842 is an ansamycin antibiotic and platelet aggregation inhibitor derived from Streptomyces. OM-4842 inhibits platelet aggregation induced by Adenosine 5'-diphosphate (ADP) (HY-W010918), Arachidonic acid (HY-109590), and C16-PAF (PAF) (HY-108635), and exerts growth-inhibitory activity against Doxorubicin (HY-15142A)-resistant P388 mouse leukemia cells. OM-4842 is used in research on platelet aggregation-related disorders and drug-resistant leukemia.

Aculeacin A is a β-1,3-glucan synthase inhibitor. Aculeacin A is an antifungal antibiotic. Aculeacin A inhibits cell wall glucan synthesis in growing yeast cells, induces cell lysis, osmotic fragility, cell aggregation and abnormal cell morphology, without affecting the synthesis of proteins, nucleic acids or mannan. Aculeacin A acts only on growing yeast cells and has a narrow antifungal spectrum, mainly targeting Candida and Torulopsis species. Aculeacin A shows reduced activity in human serum and exhibits a paradoxical dose-response pattern. Aculeacin A has an inoculum effect against some Candida albicans strains, and its activity is pH-stable. Aculeacin A can be used in studies of fungal infections, such as those caused by Candida, Torulopsis and other species.

S-2,3-Dicarboxyaziridine, a metabolite that can be isolated from a streptomyces, possesses anti-bacterial activity.