Odagaki, Y.; Hayashi, A.; Okada, K.; Hirotsu, K.; Kabashima, T.; Ito, K.; Yoshimoto, T.; Tsuru, D.; Sato, M.; Clardy, J.
The crystal structure of pyroglutamyl peptidase I from Bacillus amyloliquefaciens reveals a new structure for a cysteine protease (1999), Structure, 7, 399-411.