Major histocompatibility complex

Function Major Histocompatibility Complex (MHC) are part of the adaptive immune system. MHC molecules display peptides from degraded proteins on the host cell’s surface. T cell or natural killer receptors recognize the MHC:peptide and activate the immune response. MHC class I (Major Histocompatibility Complex Class I) are found in all nucleated cells. These cell surface proteins display peptides from cellular intrinsic proteins. For more details see Effect of HCMV on Major Histocompatibility Complex Class I MR1 Binds Vitamin Metabolites. MHC class II are found in professional antigen-presenting cells like macrophages. These cell surface proteins display peptides from cellular extrinsic proteins. For MHC class II interactions with T-cell receptor and gliadin peptide see SP3.4-TCR-HLA-DQ8-α-1-gliadin complex. Structural highlights . The . Water molecules shown as red spheres. 3D structures of MHC MHC 3D structures of MHC

spinqualitylabelsall models Human MHC class I antigen (cyan) with β 2-microglobulin (green) and peptide from Hepatitis virus (deeppink) 3ox8 Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image