Transpeptidation and reverse proteolysis and their consequences for immunity.
Reverse proteolysis and transpeptidation lead to the generation of polypeptide sequences that cannot be inferred directly from genome sequences as they are post-translational phenomena. These phenomena have so far received little attention although the physiological consequences may reach far. The protease-mediated synthesis of several immunodominant MHC class I antigens was recently reported, underscoring its importance to immunity. Reverse proteolytic and transpeptidation mechanisms as well as conditions that favor successful protease-catalyzed synthetic events are discussed here.
Berkers
Celia R
CR
Division of Cellular Biochemistry, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands.
de Jong
Annemieke
A
Ovaa
Huib
H
Rodenko
Boris
B
D000818:Animals; D017951:Antigen Presentation; D002384:Catalysis; D010450:Endopeptidases / Q000378:metabolism*; D015395:Histocompatibility Antigens Class I / Q000276:immunology / Q000378:metabolism; D006801:Humans; D007109:Immunity / Q000502:physiology; D008954:Models, Biological; D010455:Peptides / Q000737:chemistry* / Q000276:immunology / Q000378:metabolism; D011499:Protein Processing, Post-Translational
D015395:Histocompatibility Antigens Class I; D010455:Peptides; D010450:Endopeptidases