1 Institute of Biosciences and BioResources, National Council of Research of Italy, Via P. Castellino 111, 80131, Naples, Italy.
2 Centro De Biología Molecular Severo Ochoa, Nicolás Cabrera 1, Cantoblanco, 28049, Madrid, Spain.
3 Institute of Biosciences and BioResources, National Council of Research of Italy, Via P. Castellino 111, 80131, Naples, Italy. giuseppe.perugino@ibbr.cnr.it.