Valgamicin C, a novel cyclic depsipeptide containing the unusual amino acid cleonine, and related valgamicins A, T and V produced by Amycolatopsis sp. ML1-hF4

@article{Hashizume2017ValgamicinCA,
  title={Valgamicin C, a novel cyclic depsipeptide containing the unusual amino acid cleonine, and related valgamicins A, T and V produced by Amycolatopsis sp. ML1-hF4},
  author={Hideki Hashizume and Kiyoko Iijima and Kazuma Yamashita and Tomoyuki Kimura and Shun-Ichi Wada and Ryuichi Sawa and Masayuki Igarashi},
  journal={The Journal of Antibiotics},
  year={2017},
  volume={71},
  pages={129-134}
}
In the course of optimizing pargamicin A production in Amycolatopsis sp. ML1-hF4, we discovered novel cyclic depsipeptide compounds in the broth and designated them valgamicins A, C, T and V. The structures of these molecules were determined by spectroscopic studies, advanced Marfey’s method and X-ray crystal structural analysis. Valgamicin C contains the extremely rare amino acid cleonine. To our knowledge, this is the first report of a cleonine-containing metabolite from a naturally isolated… 
7 Citations

Suertides A–C: selective antibacterial cyclic hexapeptides from Amycolatopsis sp. MST-135876v3

A previously unreported dichlorinated cyclic hexapeptide, suertide A, featuring an unprecedented pair of adjacent 5/6-chlorotryptophan residues is discovered in soil collected from the riverbank of El Pont de Suert, Catalonia, Spain.

Leucinostatin Y: A Peptaibiotic Produced by the Entomoparasitic Fungus Purpureocillium lilacinum 40-H-28.

The biological activities of leucinostatin Y were assessed using human pancreatic cancer cells, revealing the importance of the C-terminus of leukinostatins for preferential cytotoxicity to cancer cells under glucose-deprived conditions and inhibition of mitochondrial function.

The secondary metabolites of rare actinomycetes: chemistry and bioactivity

Focusing on the period from 2008 to 2018, the structures and bioactivities of secondary metabolites from rare actinomycetes, involving 21 genera, are summarized.

Natural Bioactive Cyclic Peptides and Peptidomimetics

  • K. Bajaj
  • Biology, Chemistry
    Studies in Natural Products Chemistry
  • 2019

Looking Back to Amycolatopsis: History of the Antibiotic Discovery and Future Prospects

The complete genome sequences of the Amycolatopsis demonstrate a wide variety of biosynthetic gene clusters, which highlights the potential ability of actinomycetes of this genus to produce new antibiotics.

Integrating vectors for genetic studies in the rare Actinomycete Amycolatopsis marina

The results indicate that vectors based on TG1 and R4 integrases could be widely applicable in this genus, and site-specific recombination of the plasmids into the host TG1 or R4 attB sites was confirmed by sequencing.

Secondary Metabolites of the Genus Amycolatopsis: Structures, Bioactivities and Biosynthesis

The objective in this review is to summarize the chemical structures and biological activities of secondary metabolites from the genus Amycolatopsis, a rare actinomycete genus with the potential to produce antibiotics with a total of 159 compounds derived from 8 known and 18 unidentified species.

References

SHOWING 1-10 OF 20 REFERENCES

Avermectins, New Family of Potent Anthelmintic Agents: Producing Organism and Fermentation

The avermectins are a complex of chemically related agents which exhibit extraordinarily potent anthelmintic activity. They are produced by a novel species of actinomycete, NRRL 8165, which we have

Pargamicin A, a Novel Cyclic Peptide Antibiotic from Amycolatopsis sp.

Pargamicin A showed potent antibacterial activity against Staphylococcus aureus strains including MRSA and Enterococcus faecalis/faecium strains including VRE.

Biological activities of pargamicin A, a novel cyclic peptide antibiotic from Amycolatopsis sp.

It is revealed that rapid bactericidal activity of pargamicin A correlates with the perturbation of bacterial cell membrane potential and membrane function.

β-Hydroxy-L-valine and 4-Amino-3, 6-dihydroxy-2-methylhexaiioic Acid, Constitutional Amino Acids of the Antibiotic YA-56

From the acid hydrolyzate of the antibiotic YA–56 X (Zorbamycin) and Y belonging to the phleomycin-bleomycin group, 3 unique amino acids were isolated and their structures were determined to be

Structure and antibacterial activities of new cyclic peptide antibiotics, pargamicins B, C and D, from Amycolatopsis sp. ML1-hF4

Structure and antibacterial activities of new cyclic peptide antibiotics, pargamicins B, C and D, from Amycolatopsis sp. ML1-hF4

FK-506, a novel immunosuppressant isolated from a Streptomyces. I. Fermentation, isolation, and physico-chemical and biological characteristics.

FK-506, a novel immunosuppressant, has been isolated from the fermentation broth of Streptomyces tsukubaenis No. 9993 as colorless prism and the molecular formula was determined as C44H69NO12.H2O.

The antibiotic YA-56 complex: isolation, purification and physicochemical properties of the main components.

Isolation, purification and physicochemical properties of the antibiotic complex YA-56, a family of phleomycin-bleomycin group, are described and it was found to be identical with zorbamycin reported recently.

Actinomycetes: Source, Identification, and Their Applications

During 1914 to 1939, Selman A. Waksman had been consistently systematically screening soil bacteria and fungi to find an antibiotic for tuberculosis, and for this he got the Noble prize in physiological & medicine in 1952.