Xu Y, Nakajima Y, Ito K, Zheng H, Oyama H, Heiser U, Hoffmann T, Gartner UT, Demuth HU, Yoshimoto T (2008) <br />Novel inhibitor for prolyl tripeptidyl aminopeptidase from Porphyromonas gingivalis and details of substrate-recognition mechanism<br /><i>Journal of Molecular Biology</i> <b>375</b>: 708<br /><br />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) <br />Neuropeptide Y (NPY) cleaving enzymes: structural and functional homologues of dipeptidyl peptidase 4<br /><i>Peptides</i> <b>28</b>: 257<br /><br />Engel M, Hoffmann T, Manhart S, Heiser U, Chambre S, Huber R, Demuth HU, Bode W (2006) <br />Rigidity and flexibility of dipeptidyl peptidase IV: crystal structures of and docking experiments with DPIV<br /><i>Journal of Molecular Biology</i> <b>355</b>: 768<br /><br />Engel M, Hoffmann T, Wagner L, Wermann M, Heiser U, Kiefersauer R, Huber R, Bode W, Demuth HU, Brandstetter H (2003) <br />The crystal structure of dipeptidyl peptidase IV (CD26) reveals its functional regulation and enzymatic mechanism<br /><i>Proc Natl Acad Sci U S A</i> <b>100</b>: 5063<br /><br />