Azinomycin B is a

natural product A natural product is a natural compound or substance produced by a living organism—that is, found in nature. In the broadest sense, natural products include any substance produced by life. Natural products can also be prepared by chemical s ...

that contains densely assembled functionalities with potent

antitumor Cancer treatments are a wide range of treatments available for the many different types of cancer, with each cancer type needing its own specific treatment. Treatments can include surgery, chemotherapy, radiation therapy, hormonal therapy, targe ...

activity. It is isolated from '' Streptomyces sahachiroi'' which is reisolated from '' S. griseofuscus'' along with its

analog Analog or analogue may refer to: Computing and electronics * Analog signal, in which information is encoded in a continuous variable ** Analog device, an apparatus that operates on analog signals *** Analog electronics, circuits which use analog ...

azinomycin A. Azinomycin B can bind within the major groove of

DNA Deoxyribonucleic acid (; DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix. The polymer carries genetic instructions for the development, functioning, growth and reproduction of al ...

and forms covalent

interstrand crosslinks In genetics, crosslinking of DNA occurs when various exogenous or endogenous agents react with two nucleotides of DNA, forming a covalent linkage between them. This crosslink can occur within the same strand (intrastrand) or between opposite stran ...

(ISCs) with the

purine Purine is a heterocyclic aromatic organic compound that consists of two rings (pyrimidine and imidazole) fused together. It is water-soluble. Purine also gives its name to the wider class of molecules, purines, which include substituted puri ...

bases. The DNA alkylation and crosslinking by azinomycin B suggests its potent antitumor activity.

Biosynthesis

The biosynthesis of azinomycin B includes a type 1

polyketide synthase Polyketide synthases (PKSs) are a family of multi- domain enzymes or enzyme complexes that produce polyketides, a large class of secondary metabolites, in bacteria, fungi, plants, and a few animal lineages. The biosyntheses of polyketides share ...

and several

nonribosomal peptide synthetase Nonribosomal peptides (NRP) are a class of peptide secondary metabolites, usually produced by microorganisms like bacteria and fungi. Nonribosomal peptides are also found in higher organisms, such as nudibranchs, but are thought to be made by bacte ...

s.Zhao, Qunfei, Qingli He, Wei Ding, Mancheng Tang, Qianjin Kang, Yi Yu, Wei Deng, Qi Zhang, Jie Fang, Gongli Tang, and Wen Liu. "Characterization of the Azinomycin B Biosynthetic Gene Cluster Revealing a Different Iterative Type I Polyketide Synthase for Naphthoate Biosynthesis." Chemistry & Biology 15.7 (2008): 693-705. Web. Azinomycin B Biosynthesis

References

{{Reflist Polyketides Aziridines Epoxides