Scientific Reports 5: Article number: 14941; published online: 09 October 2015; updated: 08 February 2016.

The original version of this Article contained typographical errors in the inosinome database link ‘ http://srv00.recas.ba.infn.it/editing’ which was incorrectly given as ‘ http://srv00.ibbe.cnr.it/editing/’. These errors have now been corrected in the PDF and HTML versions of the Article.