Lorente, ElenaGarcia, RuthLopez, Daniel2019-11-142019-11-142011-11-04J Biol Chem. 2011 Nov 4;286(44):38054-9. doi: 10.1074/jbc.M111.281808. Epub 2011 Sep 13.0021-9258http://hdl.handle.net/20.500.12105/8583The transporters associated with antigen processing (TAP) allow the supply of peptides derived from the cytosol to translocate to the endoplasmic reticulum, where they complex with nascent human leukocyte antigen (HLA) class I molecules. However, infected and tumor cells with TAP molecules blocked or individuals with nonfunctional TAP complexes are able to present HLA class I ligands generated by TAP-independent processing pathways. These peptides are detected by the CD8(+) lymphocyte cellular response. Here, the generation of the overall peptide repertoire associated with four different HLA class I molecules in TAP-deficient cells was studied. Using different protease inhibitors, four different proteolytic specificities were identified. These data demonstrate the different allele-dependent complex processing pathways involved in the generation of the HLA class I peptide repertoire in TAP-deficient cells.engAMhttp://creativecommons.org/licenses/by-nc-sa/4.0/ATP Binding Cassette Transporter, Subfamily B, Member 2ATP-Binding Cassette TransportersAllelesAntigensCD8-Positive T-LymphocytesCell LineCytosolEndoplasmic ReticulumHLA AntigensHistocompatibility Antigens Class IHumansLigandsPeptide HydrolasesPeptidesProtease InhibitorsProtein TransportSurface PropertiesAtribución-NoComercial-CompartirIgual 4.0 Internacional219148092864438054-910.1074/jbc.M111.2818081083-351XThe Journal of biological chemistryopen access