Structure and Function of a Multi-Megadalton Virus-Like Proteolytic Dodecahedron.
Madej, M., Rodriguez-Banqueri, A., Mizgalska, D., Szmigielski, B., Nowakowska, Z., Benedyk-Machaczka, M., Bzowska, M., Mikruta, K., Ramirez-Larrota, J.S., Agunanne, C., Julien, O., O'Donoghue, A.J., Scavenius, C., Lopez-Martin, M., Marcos, E., Koziej, L., Glatt, S., Guerra, P., Eckhard, U., Potempa, J., Gomis-Ruth, F.X.(2026) Angew Chem Int Ed Engl : e5597279-e5597279
- PubMed: 42723362 Search on PubMed
- DOI: https://doi.org/10.1002/anie.5597279
- Primary Citation Related Structures: 
9SLL, 9SLN, 9SM4, 9SM8, 9SMJ - PubMed Abstract: 
Natural pentamer dodecahedra (Ddhs) span six orders of magnitude in diameter. Among proteins, only two catalytic Ddhs have been structurally characterized: lumazine synthase (LS) and the core of pyruvate dehydrogenase (PDH). Zuzalysin (ZUZ) is a ≈95-kDa metallopeptidase secreted for virulence by Porphyromonas gingivalis. Calcium converts latent flexible monomers into active ≈0.5-MDa pentamers that further assemble hierarchically into bipentamers, tripentamers, and a ≈5.6-MDa, ≈355-Å virus-like dodecahedron (Ddh ZUZ ). Experimental structures (1.8-3.6 Å) across these states reveal the molecular basis of activation, association, and catalysis, culminating in Ddh ZUZ , which is physiologic, exceeds small viral capsids, and has 20 main entry pores and 60 lumen-facing active sites. ZUZ represents the largest catalytic protein assembly resolved at high resolution, exceeding LS, PDH, and major peptidase complexes in size and/or resolution.
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.
Organizational Affiliation: 

