About the Authors

Maria João Gravato-Nobre

maria.gravato-nobre@bioch.ox.ac.uk

Affiliation Department of Biochemistry, University of Oxford, Oxford, United Kingdom

Filipa Vaz

Affiliations Department of Biochemistry, University of Oxford, Oxford, United Kingdom, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom

Sergio Filipe

Affiliation School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom

Ronald Chalmers

Affiliation Laboratory of Bacterial Cell Surfaces and Pathogenesis, Instituto de Tecnologia Química e Biológica and Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisboa, Portugal

Jonathan Hodgkin

Affiliation Department of Biochemistry, University of Oxford, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JH MJGN RC. Performed the experiments: MJGN RC FV. Analyzed the data: MJGN RC JH. Contributed reagents/materials/analysis tools: MJGN JH RC. Wrote the paper: MJGN RC JH. Designed zymogram: MJGN SF.