Respinomycin A1 is an antibiotic. Respinomycin A1 can be found in Streptomyces sp. RK-483. Respinomycin A1 causes the differentiation of leukemic K-562 cells[1].
References
[1] Ubukata M, et al. Respinomycin A1, a new anthracycline antibiotic. J Antibiot (Tokyo). 1991 Nov;44(11):1274-6. DOI:10.7164/antibiotics.44.1274