Correction to: Bioprospection of actinobacteria derived from freshwater sediments for their potential to produce antimicrobial compounds

Correction to: Microb Cell Fact (2018) 17:68 https://doi.org/10.1186/s12934-018-0912-0

Upon publication of this article [1], it was brought to our attention that Figs. 3, 4 and 5 are incorrectly presented in the original version of the article. The figures were inadvertently swapped in the original submission and published. Figure 3 should be treated as Fig. 5; Fig. 4 should be 3 and Fig. 5 should be Fig. 4.

The corrected figures are given in this erratum (Figs. 3, 4, 5).

Fig. 3

MRM extracted ion chromatogram of reference analyte: a trimethoprim, b fluconazole, c ketoconazole, d rifampicin

Fig. 4

MS/MS spectra of reference analytes; a trimethoprim, b fluconazole, c ketoconazole, d rifampicin (as per [19])

Fig. 5

Maximum likelihood (ML) phylogenetic tree constructed using amino acid sequences for a PKS type II gene; b NRPS gene and c phzE gene. The scale bar represents the amino acid changes

Page no. 4 of the original publication under section Detection of antibiotics using UPLC–ESI–MS/MS, last sentence should be “Instrumentation and analytical conditions were performed using the standardized methods as described in our previous paper (Fig. 4) [19].

Similarly, Page no. 8 of original publication under section Detection and quantification of antibiotics using the UPLC-MRM method should be “MS/MS Spectra of standard reference analytes i.e. trimethoprim, fuconazole, ketoconazole and rifampicin showed as Fig. 5 was used from our earlier publication [19].

Page no. 7 of the original publication Figure 3 legend needs to be changed as Fig. 3 MRM extracted ion chromatogram of reference analyte: a trimethoprim, b fluconazole, c ketoconazole, d rifampicin.

Page no. 9 of the original publication, Figure 4 should be Fig. 4 MS/MS spectra of reference analytes; a trimethoprim, b fluconazole, c ketoconazole, d rifampicin (as per [19]).

Page no. 10 of the original publication, Figure 5 should be Fig. 5 Maximum likelihood (ML) phylogenetic tree constructed using amino acid sequences for a PKS type II gene; b NRPS gene and c phzE gene. The scale bar represents the amino acid changes.