1. Departamento
de Estructura de Macromoléculas, Centro Nacional de Biotecnología (CSIC), Campus Cantoblanco, 28049 Madrid, Spain
2. Servicio
de Microbiología-INIBIC, Complejo Hospitalario Universitario A Coruña (CHUAC), 15006 A Coruña, Spain
3. Institute
of Cell and Molecular Biosciences, Medical School, University of Newcastle upon Tyne, Newcastle upon Tyne NE2 4HH, United Kingdom