Article
Streptomyces axinellae sp. nov., isolated from the Mediterranean sponge Axinella polypoides (Porifera).
Research Center for Infectious Diseases, University of Würzburg, Röntgenring 11, D-97070 Würzburg, Germany.
International journal of systematic and evolutionary microbiology (impact factor:
2.27).
07/2009;
59(Pt 6):1433-7.
DOI:10.1099/ijs.0.007856-0
Source: PubMed
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Citations (0)
- Cited In (2)
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Article: Anti-parasitic compounds from Streptomyces sp. strains isolated from Mediterranean sponges.
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ABSTRACT: Actinomycetes are prolific producers of pharmacologically important compounds accounting for about 70% of the naturally derived antibiotics that are currently in clinical use. In this study, we report on the isolation of Streptomyces sp. strains from Mediterranean sponges, on their secondary metabolite production and on their screening for anti-infective activities. Bioassay-guided isolation and purification yielded three previously known compounds namely, cyclic depsipeptide valinomycin, indolocarbazole alkaloid staurosporine and butenolide. This is the first report of the isolation of valinomycin from a marine source. These compounds exhibited novel anti-parasitic activities specifically against Leishmania major (valinomycin IC(50) < 0.11 microM; staurosporine IC(50) 5.30 microM) and Trypanosoma brucei brucei (valinomycin IC(50) 0.0032 microM; staurosporine IC(50) 0.022 microM; butenolide IC(50) 31.77 microM). These results underscore the potential of marine actinomycetes to produce bioactive compounds as well as the re-evaluation of previously known compounds for novel anti-infective activities.Marine Drugs 01/2010; 8(2):373-80. · 3.85 Impact Factor -
Article: New tetromycin derivatives with anti-trypanosomal and protease inhibitory activities.
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ABSTRACT: Four new tetromycin derivatives, tetromycins 1-4 and a previously known one, tetromycin B (5) were isolated from Streptomyces axinellae Pol001(T) cultivated from the Mediterranean sponge Axinella polypoides. Structures were assigned using extensive 1D and 2D NMR spectroscopy as well as HRESIMS analysis. The compounds were tested for antiparasitic activities against Leishmania major and Trypanosoma brucei, and for protease inhibition against several cysteine proteases such as falcipain, rhodesain, cathepsin L, cathepsin B, and viral proteases SARS-CoV M(pro), and PL(pro). The compounds showed antiparasitic activities against T. brucei and time-dependent inhibition of cathepsin L-like proteases with K(i) values in the low micromolar range.Marine Drugs 01/2011; 9(10):1682-97. · 3.85 Impact Factor
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Keywords
actinomycete strain
cell wall
chemotaxonomic
complete 16S rRNA gene sequence
DNA G+C content
DNA-DNA hybridization
ll-diaminopimelic acid
marine sponge Axinella polypoides
names
novel species
novel taxon
polyphasic approach
related Streptomyces species
separate phyletic line
Streptomyces axinellae sp
type strain