Xu Y, Nakajima Y, Ito K, Zheng H, Oyama H, Heiser U, Hoffmann T, Gartner UT, Demuth HU, Yoshimoto T (2008)
Novel inhibitor for prolyl tripeptidyl aminopeptidase from Porphyromonas gingivalis and details of substrate-recognition mechanism
Journal of Molecular Biology 375: 708

Frerker N, Wagner L, Wolf R, Heiser U, Hoffmann T, Rahfeld JU, Schade J, Karl T, Naim HY, Alfalah M, Demuth HU, von Horsten S (2007)
Neuropeptide Y (NPY) cleaving enzymes: structural and functional homologues of dipeptidyl peptidase 4
Peptides 28: 257

Engel M, Hoffmann T, Manhart S, Heiser U, Chambre S, Huber R, Demuth HU, Bode W (2006)
Rigidity and flexibility of dipeptidyl peptidase IV: crystal structures of and docking experiments with DPIV
Journal of Molecular Biology 355: 768

Engel M, Hoffmann T, Wagner L, Wermann M, Heiser U, Kiefersauer R, Huber R, Bode W, Demuth HU, Brandstetter H (2003)
The crystal structure of dipeptidyl peptidase IV (CD26) reveals its functional regulation and enzymatic mechanism
Proc Natl Acad Sci U S A 100: 5063