| Chain | GOid | namespace | contents |
| B | 0002376 | biological_process | immune system process |
| B | 0002474 | biological_process | antigen processing and presentation of peptide antigen via MHC class I |
| B | 0002502 | biological_process | peptide antigen assembly with MHC class I protein complex |
| B | 0002503 | biological_process | peptide antigen assembly with MHC class II protein complex |
| B | 0002726 | biological_process | positive regulation of T cell cytokine production |
| B | 0005198 | molecular_function | structural molecule activity |
| B | 0005576 | cellular_component | extracellular region |
| B | 0005765 | cellular_component | lysosomal membrane |
| B | 0005794 | cellular_component | Golgi apparatus |
| B | 0005829 | cellular_component | cytosol |
| B | 0005886 | cellular_component | plasma membrane |
| B | 0006879 | biological_process | intracellular iron ion homeostasis |
| B | 0007611 | biological_process | learning or memory |
| B | 0010038 | biological_process | response to metal ion |
| B | 0019885 | biological_process | antigen processing and presentation of endogenous peptide antigen via MHC class I |
| B | 0019886 | biological_process | antigen processing and presentation of exogenous peptide antigen via MHC class II |
| B | 0023026 | molecular_function | MHC class II protein complex binding |
| B | 0031902 | cellular_component | late endosome membrane |
| B | 0033572 | biological_process | transferrin transport |
| B | 0034756 | biological_process | regulation of iron ion transport |
| B | 0034757 | biological_process | negative regulation of iron ion transport |
| B | 0042605 | molecular_function | peptide antigen binding |
| B | 0042612 | cellular_component | MHC class I protein complex |
| B | 0042613 | cellular_component | MHC class II protein complex |
| B | 0042802 | molecular_function | identical protein binding |
| B | 0042803 | molecular_function | protein homodimerization activity |
| B | 0042824 | cellular_component | MHC class I peptide loading complex |
| B | 0048260 | biological_process | positive regulation of receptor-mediated endocytosis |
| B | 0048261 | biological_process | negative regulation of receptor-mediated endocytosis |
| B | 0050680 | biological_process | negative regulation of epithelial cell proliferation |
| B | 0050768 | biological_process | negative regulation of neurogenesis |
| B | 0050778 | biological_process | positive regulation of immune response |
| B | 0050870 | biological_process | positive regulation of T cell activation |
| B | 0051289 | biological_process | protein homotetramerization |
| B | 0071281 | biological_process | cellular response to iron ion |
| B | 0071316 | biological_process | cellular response to nicotine |
| B | 1990000 | biological_process | amyloid fibril formation |
| B | 1990712 | cellular_component | HFE-transferrin receptor complex |
| B | 2000774 | biological_process | positive regulation of cellular senescence |
| B | 2000978 | biological_process | negative regulation of forebrain neuron differentiation |
