9ocg | pdb_00009ocg

Transporter associated with antigen processing (TAP) bound to the viral protein BNLF2a in the inward-facing state

spinqualitylabelsall models 9ocg, resolution 3.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 9ocg is a 3 chain structure with sequence from Homo sapiens and Human gammaherpesvirus 4. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.8Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease TAP2_HUMAN Immunodeficiency by defective expression of HLA class 1. The disease is caused by mutations affecting the gene represented in this entry. Function TAP2_HUMAN Involved in the transport of antigens from the cytoplasm to the endoplasmic reticulum for association with MHC class I molecules. Also acts as a molecular scaffold for the final stage of MHC class I folding, namely the binding of peptide. Nascent MHC class I molecules associate with TAP via tapasin. Inhibited by the covalent attachment of herpes simplex virus ICP47 protein, which blocks the peptide-binding site of TAP. Inhibited by human cytomegalovirus US6 glycoprotein, which binds to the lumenal side of the TAP complex and inhibits peptide translocation by specifically blocking ATP-binding to TAP1 and prevents the conformational rearrangement of TAP induced by peptide binding. Inhibited by human adenovirus E3-19K glycoprotein, which binds the TAP complex and acts as a tapasin inhibitor, preventing MHC class I/TAP association.

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