kirromycin-like antibiotics SB22484 ChEMBL:CHEMBL14563 ARO:3001320 antibiotic_resistance PubChem:53418992 SB22484 antibiotics are of the same chemical group as kirromycins. SB22484 antibiotics are produced by Streptomyces sp. NRRL 15496. There are two SB22484 isomers with the same UV absorption spectra, but differing molecular masses. These antibiotics are strongly active against Neisseria species, but also show activity against Streptococci, and Haemophilus influenzae.