Erratum to:Appl Microbiol Biotechnol

DOI 10.1007/s00253-014-6094-8

The original version of this article inadvertently contained an error.

In the discussion section we stated:

PapR peptide-binding to apo PlcR dimer promotes tetramerization; the tetramer is the active form of this transcriptional regulator (Grenha et al. 2012). However, this is incorrect; the results shown in the paper by Grenha et al. (2012) are in accord with the following statement:

PapR induces conformational changes in the PlcR dimer that allow proper positioning of the DNA binding domain on its DNA recognition sequence (Grenha et al. 2012).