Streptogramin B is a subgroup of the streptogramin antibiotics family. These natural products are cyclic hexa- or hepta depsipeptides produced by various members of the genus of bacteria Streptomyces. Many of the members of the streptogramins reported in the literature have the same structure and different names; for example, pristinamycin IA = vernamycin Bα = mikamycin B = osteogrycin B.
Pristinamycin IIA is a macrolide antibiotic. It is a member of the streptogramin A group of antibiotics and one component of pristinamycin. Pristinamycin IIA was first isolated from the Streptomyces virginiae, but has been isolated from other microorganisms and thus has been given a variety of other names such as Virginiamycin M1, Mikamycin A, and Streptogramin A. Pristinamycin IIA structure was determined by chemical and instrumental techniques, including X-ray crystallography. Pristinamycin IIA is of interest from a biosynthetic viewpoint because it contains the unusual dehydroproline and oxazole ring systems. The only experimental evidence bearing on the formation of the oxazole ring is found in work on the biosynthesis of the alkaloid annuloline.
Streptomyces antibioticus is a gram-positive bacterium discovered in 1941 by Nobel-prize-winner Selman Waksman and H. Boyd Woodruff. Its name is derived from the Greek "strepto-" meaning "twisted", alluding to this genus' chain-like spore production, and "antibioticus", referring to this species' extensive antibiotic production. Upon its first characterization, it was noted that S. antibioticus produces a distinct soil odor.
Streptomyces azureus is a bacterium species from the genus of Streptomyces which has isolated from soil. Streptomyces azureus produces the antibiotic thiostrepton.
Streptomyces calvus is a bacterium species from the genus of Streptomyces which has been isolated from soil in Dinepur in India. Streptomyces calvus produces nucleocidin, adiposin 1 and adiposin 2.
Streptomyces chartreusis is a bacterium species from the genus of Streptomyces which has been isolated from soil in Africa. Streptomyces chartreusis produces N-deacyltunicamycin, elsamicin A, aminoacylase and chartreusin.
Streptomyces flaveolus is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces flaveolus produces L-isoleucine, actinomycin J and tirandamycin.
Streptomyces glaucescens is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces glaucescens produces tetracenomycin C, tetracenomycin D and tetracenomycin E.
Streptomyces griseocarneus is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces griseocarneus produces hydroxystreptomycin, alboverticillin, sphingomyelinase C and rotaventin.
Streptomyces griseorubens is a bacterium species from the genus of Streptomyces which has been isolated from soil. Streptomyces griseorubens produces althiomycin. Streptomyces griseorubens produces matamycin and althiomycin.
Streptomyces griseoviridis is a filamentous bacterium species from the genus Streptomyces, which was isolated from soil in Texas, United States. Streptomyces griseoviridis produces etamycin, griseoviridin, bactobolin, prodigiosin R1, actinobolin, and rosophilin. Streptomyces griseoviridis can be used to protect plants since it inhibits the growth of fungal pathogens.
Streptomyces kasugaensis is a bacterium species from the genus of Streptomyces which has been isolated from soil from the city Nara in Japan. Streptomyces kasugaensis produces kasugamycin and thiolutin.
Streptomyces longispororuber is a bacterium species from the genus of Streptomyces. Streptomyces longispororuber produces corallomycin.
Streptomyces lydicus is a bacterium species from the genus of Streptomyces which has been isolated from soil in the United States. Streptomyces lydicus produces actithiazic acid, natamycin, lydimycin, streptolydigin, and 1-deoxygalactonojirimycin. Streptomyces lydicus can be used as an agent against fungal plant pathogens like Fusarium, Pythium, Phytophthora, Rhizoctonia and Verticillum.
Streptomyces melanosporofaciens is a bacterium species from the genus of Streptomyces which has been isolated from soil in Italy. Streptomyces melanosporofaciens produces elaiophylin, cyclooctatin, geldanamycin, chilaphylin and melanosporin. A mutant of Streptomyces melanosporofaciens has the ability to protect potatoes from common scab.
Streptomyces nogalater is a bacterium species from the genus of Streptomyces. Streptomyces nogalater produces nogalamycin.
Streptomyces rishiriensis is a bacterium species from the genus of Streptomyces which has been isolated from soil in Hokkaido in Japan. Streptomyces rishiriensis produces coumermycin A1, notomycin, 2-chloroadenosine, phosphophenylalanarginine and lactonamycin.
Streptomyces rochei is a bacterium species from the genus of Streptomyces which has been isolated from soil in Russia. Streptomyces rochei produces borrelidin, butyrolactol A, butyrolactol B, uricase and streptothricin. Streptomyces rochei has antifungal activity against Fusarium oxysporum f.sp. lycopersici and Aspergillus fumigatus. Streptomyces rochei produces moenomycin and bambermycin. Streptomyces rochei produces amicetin A, amicetin B, amicetin C and streptolin. Streptomyces rochei produces endo-β-N-acetylglucosaminidase mithramycin, amicetin, bamicetin, and plicacetin.
Streptomyces showdoensis is a bacterium species from the genus of Streptomyces which has been isolated from soil in Shōdoshima, Japan. Streptomyces showdoensis produces terferol, actinomycin and showdomycin.
Streptomyces spiroverticillatus is a bacterium species from the genus of Streptomyces which has been isolated from soil in Japan. Streptomyces spiroverticillatus produces tautomycin.
