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"comparative genomics" Keyword-tagged Publications:

Title Authors PubMed ID
1 Identification of a Novel Biosynthetic Gene Cluster in Aspergillus niger Using Comparative Genomics Evdokias G; Semper C; Mora-Ochomogo M; Di Falco M; Nguyen TTM; Savchenko A; Tsang A; Benoit-Gelber I; 34064722
BIOLOGY

 

Title:Identification of a Novel Biosynthetic Gene Cluster in Aspergillus niger Using Comparative Genomics
Authors:Evdokias GSemper CMora-Ochomogo MDi Falco MNguyen TTMSavchenko ATsang ABenoit-Gelber I
Link:https://pubmed.ncbi.nlm.nih.gov/34064722/
DOI:10.3390/jof7050374
Publication:Journal of fungi (Basel, Switzerland)
Keywords:Aspergillus nigerBGC: biosynthetic gene clusterCRISPR/Cas9NRPS: nonribosomal peptide synthetasecomparative genomicssecondary metabolites
PMID:34064722 Category: Date Added:2021-06-02
Dept Affiliation: BIOLOGY
1 Centre for Structural and Functional Genomics, Department of Biology, Concordia University, 7141 Rue Sherbrooke Ouest, Montréal, QC H4B 1R6, Canada.
2 Department of Microbiology, Immunology and Infectious Disease, University of Calgary, 3330 Hospital Drive, Calgary, AB T2N 4N1, Canada.

Description:

Previously, DNA microarrays analysis showed that, in co-culture with Bacillus subtilis, a biosynthetic gene cluster anchored with a nonribosomal peptides synthetase of Aspergillus niger is downregulated. Based on phylogenetic and synteny analyses, we show here that this gene cluster, NRRL3_00036-NRRL3_00042, comprises genes predicted to encode a nonribosomal peptides synthetase, a FAD-binding domain-containing protein, an uncharacterized protein, a transporter, a cytochrome P450 protein, a NAD(P)-binding domain-containing protein and a transcription factor. We overexpressed the in-cluster transcription factor gene NRRL3_00042. The overexpression strain, NRRL3_00042OE, displays reduced growth rate and production of a yellow pigment, which by mass spectrometric analysis corresponds to two compounds with masses of 409.1384 and 425.1331. We deleted the gene encoding the NRRL3_00036 nonribosomal peptides synthetase in the NRRL3_00042OE strain. The resulting strain reverted to the wild-type phenotype. These results suggest that the biosynthetic gene cluster anchored by the NRRL3_00036 nonribosomal peptides synthetase gene is regulated by the in-cluster transcriptional regulator gene NRRL3_00042, and that it is involved in the production of two previously uncharacterized compounds.





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