Novel avermectins produced by mutational biosynthesis.

2-Hydroxysagamicin: a new antibiotic produced by mutational biosynthesis of Micromonospora sagamiensis.

Nanotoxicity for E. Coli and Characterization of Silver Quantum Dots Produced by Biosynthesis with Eichhornia crassipes

Nanomaterials are widely used in health and biomedical applications, however, only a few studies investigate their toxic effects.  The present report signifies a contribution to the study of the toxic effects of silver nanoparticles on   E. coli cells, which is a model organism of anthropogenic pollution. The toxicity of nanoparticles depends on their chemical and surface properties, shape and ...

Biosynthesis Characteristic of Silver ‎Nanoparticles Produced by Mine Soil ‎Bacteria Isolation, Kerman, Iran

   Background: Biosynthesis of is one of the safe methods in nanoparticles (NP) production where local bacteria of every region can be applied for its better functionality. Among these nanoparticles, the silver nanoparticles (SNP) with high applicability due to their antimicrobial characteristic are the most common.    Methods: In the study, the soil samples are collected from met...

Precursors in the biosynthesis of FR-900482, a novel antitumor antibiotic produced by Streptomyces sandaensis.

isolated from the culture broth of Streptomyces sandaensis No. 6897, was found to have unique structure1*^. FR-900482 differs from the mitomycin family of antibiotics due to the lack of a quinoid structure, although FR-900482 resembles the mitomycins with respect to the aziridine function and a carbamoyloxymethyl group. Examination of the structure suggests that the biosynthesis of FR-900482 ma...

The squalestatins, novel inhibitors of squalene synthase produced by a species of Phoma. III. Biosynthesis.

The biosynthetic origin of the carbon and oxygen atoms of the novel fungal secondary metabolite 1 was studied. Incorporation studies with single and multiple labelled 13C precursors indicated that the major portion of the molecule was derived from two polyketide chains made up of acetate units. One of the chains had benzoic acid (which can be derived from phenylalanine) as a starter unit. The r...