Abstract
The macrolactam antibiotic incednine, isolated from Streptomyces sp. ML694–90F3, contains a (S)-3-aminobutyric acid moiety in its polyketide aglycon. In this study, we performed mutasynthesis to generate incednine derivatives. We successfully obtained 28-methylincednine by feeding 3-aminopentanoic acid into culture of a strain in which the glutamate 2,3-aminomutase gene idnL4, whose product is responsible for supplying 3-aminobutyric acid, was disrupted. 28-Methylincednine showed similar suppressive activity of the antiapoptotic function of oncoprotein Bcl-xL to that of incednine. Thus, this study highlights the applicability of the mutasynthesis approach in generation of novel β-amino acid-containing macrolactam polyketide derivatives.
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References
Futamura Y, Sawa R, Umezawa Y, et al. Discovery of incednine as a potent modulator of the anti-apoptotic function of Bcl-xL from microbial origin. J Am Chem Soc. 2008;130:1822–3.
Lim YH, Wong FT, Yeo WL, et al. Auroramycin: a potent antibiotic from Streptomyces roseosporus by CRISPR-Cas9 activation. ChemBioChem. 2018;19:1716–9.
Schulz D, Nachtigall J, Geisen U, et al. Silvalactam, a 24-membered macrolactam antibiotic produced by Streptomyces sp. Tü 6392. J Antibiot. 2012;65:369–72.
Takaishi M, Kudo F, Eguchi T. Biosynthetic pathway of 24-membered macrolactam glycoside incednine. Tetrahedron. 2008;64:6651–6.
Takaishi M, Kudo F, Eguchi T. A unique pathway for the 3-aminobutyrate starter unit from L-glutamate through β-glutamate during biosynthesis of the 24-membered macrolactam antibiotic, incednine. Org Lett. 2012;14:4591–3.
Takaishi M, Kudo F, Eguchi T. Identification of incednine biosynthetic gene cluster: characterization of novel β-glutamate-β-decarboxylase IdnL3. J Antibiot. 2013;66:691–9.
Cieślak J, Miyanaga A, Takaku R, et al. Biochemical characterization and structural insight into aliphatic β-amino acid adenylation enzymes IdnL1 and CmiS6. Proteins. 2017;85:1238–47.
Cieślak J, Miyanaga A, Takaishi M, et al. Functional and structural characterization of IdnL7, an adenylation enzyme involved in incednine biosynthesis. Acta Crystallogr F Struct Biol Commun. 2019;75:299–306.
Ohtani T, Tsukamoto S, Kanda H, et al. Total synthesis of incednam, the aglycon of incednine. Org Lett. 2010;12:5068–71.
Miyanaga A, Kudo F, Eguchi T. Mechanisms of β-amino acid incorporation in polyketide macrolactam biosynthesis. Curr Opin Chem Biol. 2016;35:58–64.
Shindo K, Kamishohara M, Odagawa A, et al. Vicenistatin, a novel 20-membered macrocyclic lactam antitumor antibiotic. J Antibiot. 1993;46:1076–81.
Ōmura S, Nakagawa A, Shibata K, et al. The structure of hitachimycin, a novel macrocyclic lactam involving β-phenylalanine. Tetrahedron Lett. 1982;23:4713–6.
Ogasawara Y, Katayama K, Minami A, et al. Cloning, sequencing, and functional analysis of the biosynthetic gene cluster of macrolactam antibiotic vicenistatin in Streptomyces halstedii. Chem Biol. 2004;11:79–86.
Kudo F, Kawamura K, Uchino A, et al. Genome mining of the hitachimycin biosynthetic gene cluster: involvement of a phenylalanine-2,3-aminomutase in biosynthesis. ChemBioChem. 2015;16:909–14.
Miyanaga A. Structure and function of polyketide biosynthetic enzymes: various strategies for production of structurally diverse polyketides. Biosci Biotech Biochem. 2017;81:2227–36.
Malmierca MG, Pérez-Victoria I, Martín J, et al. New sipanmycin analogues generated by combinatorial biosynthesis and mutasynthesis approaches relying on the substrate flexibility of key enzymes in the biosynthetic pathway. Appl Environ Microbiol. 2019;86:e02453–19.
Malmierca MG, González-Montes L, Pérez-Victoria I, et al. Searching for glycosylated natural products in actinomycetes and identification of novel macrolactams and angucyclines. Front Microbiol. 2018;9:39.
Malmierca MG, Pérez-Victoria I, Martín J, et al. Cooperative involvement of glycosyltransferases in the transfer of amino sugars during the biosynthesis of the macrolactam sipanmycin by Streptomyces sp. strain CS149. Appl Environ Microbiol. 2018;84:e01462–18.
Acknowledgements
This work was supported in part by a Grant-in-Aid from the Institute for Fermentation, Osaka (AM), Nagase Science Technology Foundation (FK), Takeda Science Foundation (FK), and by a Grant-in-Aid for Scientific Research on Innovative Areas (23108509 to FK and 16H06451 to TE) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. The authors thank Dr. Yoshio Ando for his kind assistance in operating the Bruker micrOTOF-Q II mass spectrometer. The authors also thank Daisuke Kawasaki and Sotaro Takahashi for obtaining optical rotation data and UV spectra.
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Miyanaga, A., Takaku, R., Takaishi, M. et al. Generation of incednine derivatives by mutasynthesis. J Antibiot 73, 794–797 (2020). https://doi.org/10.1038/s41429-020-0329-y
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DOI: https://doi.org/10.1038/s41429-020-0329-y