| GO Term Name | (GO Accession Number) | Term Type | Definition |
| MHC class II protein complex assembly | (GO:0002399) | biological_process | The aggregation, arrangement and bonding together of a set of components to form an MHC class II protein complex. |
| antigen processing and presentation of endogenous peptide antigen via MHC class II | (GO:0002491) | biological_process | The process in which an antigen-presenting cell expresses a peptide antigen of endogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein. |
| antigen processing and presentation of peptide antigen via MHC class II | (GO:0002495) | biological_process | The process in which an antigen-presenting cell expresses a peptide antigen on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein. |
| peptide antigen assembly with MHC class II protein complex | (GO:0002503) | biological_process | The binding of a peptide to the antigen binding groove of an MHC class II protein complex. |
| antigen processing and presentation of peptide or polysaccharide antigen via MHC class II | (GO:0002504) | biological_process | The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex. |
| antigen processing and presentation of polysaccharide antigen via MHC class II | (GO:0002505) | biological_process | The process in which an antigen-presenting cell expresses a polysaccharide antigen on its cell surface in association with an MHC class II protein complex. |
| polysaccharide assembly with MHC class II protein complex | (GO:0002506) | biological_process | The binding of a polysaccharide to the antigen binding groove of an MHC class II protein complex. |
| regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II | (GO:0002580) | biological_process | Any process that modulates the frequency, rate, or extent of antigen processing and presentation of antigen (peptide or polysaccharide) via MHC class II. |
| negative regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II | (GO:0002581) | biological_process | Any process that stops, prevents, or reduces the frequency, rate, or extent of antigen processing and presentation of antigen (peptide or polysaccharide) via MHC class II. |
| positive regulation of antigen processing and presentation of peptide or polysaccharide antigen via MHC class II | (GO:0002582) | biological_process | Any process that activates or increases the frequency, rate, or extent of antigen processing and presentation of antigen (peptide or polysaccharide) via MHC class II. |
| regulation of antigen processing and presentation of peptide antigen via MHC class II | (GO:0002586) | biological_process | Any process that modulates the frequency, rate, or extent of antigen processing and presentation of peptide antigen via MHC class II. |
| negative regulation of antigen processing and presentation of peptide antigen via MHC class II | (GO:0002587) | biological_process | Any process that stops, prevents, or reduces the frequency, rate, or extent of antigen processing and presentation of peptide antigen via MHC class II. |
| positive regulation of antigen processing and presentation of peptide antigen via MHC class II | (GO:0002588) | biological_process | Any process that activates or increases the frequency, rate, or extent of antigen processing and presentation of peptide antigen via MHC class II. |
| regulation of antigen processing and presentation of polysaccharide antigen via MHC class II | (GO:0002601) | biological_process | Any process that modulates the frequency, rate, or extent of antigen processing and presentation of polysaccharide antigen via MHC class II. |
| negative regulation of antigen processing and presentation of polysaccharide antigen via MHC class II | (GO:0002602) | biological_process | Any process that stops, prevents, or reduces the frequency, rate, or extent of antigen processing and presentation of polysaccharide antigen via MHC class II. |
| positive regulation of antigen processing and presentation of polysaccharide antigen via MHC class II | (GO:0002603) | biological_process | Any process that activates or increases the frequency, rate, or extent of antigen processing and presentation of polysaccharide antigen via MHC class II. |
| MHC class II protein complex | (GO:0042613) | cellular_component | A transmembrane protein complex composed of an MHC class II alpha and MHC class II beta chain, and with or without a bound peptide or polysaccharide antigen. |
| MHC class II receptor activity | (GO:0032395) | molecular_function | Combining with an MHC class II protein complex and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. |
| antigen processing and presentation of exogenous peptide antigen via MHC class II | (GO:0019886) | biological_process | The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein. |
| MHC class II protein complex binding | (GO:0023026) | molecular_function | Interacting selectively and non-covalently with the class II major histocompatibility complex. |
| suppression by virus of host antigen processing and presentation of peptide antigen via MHC class II | (GO:0039505) | biological_process | Any viral process that inhibits a host antigen-presenting cell expressing a peptide antigen on its cell surface in association with an MHC class II protein complex. |
| MHC class II protein binding | (GO:0042289) | molecular_function | Interacting selectively and non-covalently with major histocompatibility complex class II molecules; a set of molecules displayed on cell surfaces that are responsible for lymphocyte recognition and antigen presentation. |
| MHC class II protein binding, via lateral surface | (GO:0042657) | molecular_function | Interacting selectively and non-covalently with the lateral surface of major histocompatibility complex class II molecules. |
| MHC class II protein binding, via antigen binding groove | (GO:0042658) | molecular_function | Interacting selectively and non-covalently with the antigen binding groove of major histocompatibility complex class II molecules. |
| obsolete MHC class II receptor activity | (GO:0045012) | molecular_function | OBSOLETE. A major histocompatibility complex class II receptor. These display processed antigens from virally-infected or transformed cells. Class-II-positive cells ('antigen-presenting cells') can take up antigens from outside by endocytosis, degrade them into small peptides, and re-export the peptides (now bound to MHC class II protein) to the cell surface. These peptide-MHC class II complexes can then be recognized by specific CD4+ lymphocytes. This term was made obsolete because it was defined ambiguously, and has therefore been used incorrectly in annotations. To update annotations of gene products that act as receptors for MHC class II protein complexes, use the molecular function term 'MHC class II receptor activity ; GO:0032395'; to update annotations of gene products which are components of MHC class II protein complexes, use the cellular component term 'MHC class II protein complex ; GO:0042613'. |
| MHC class II biosynthetic process | (GO:0045342) | biological_process | The chemical reactions and pathways resulting in the formation of major histocompatibility protein class II. |
| regulation of MHC class II biosynthetic process | (GO:0045346) | biological_process | Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of MHC class II. |
| negative regulation of MHC class II biosynthetic process | (GO:0045347) | biological_process | Any process that stops, prevents, or reduces the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of MHC class II. |
| positive regulation of MHC class II biosynthetic process | (GO:0045348) | biological_process | Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of MHC class II. |
| MHC protein complex | (GO:0042611) | cellular_component | A transmembrane protein complex composed of an MHC alpha chain and, in most cases, either an MHC class II beta chain or an invariant beta2-microglobin chain, and with or without a bound peptide, lipid, or polysaccharide antigen. |
| active evasion of host immune response via regulation of host antigen processing and presentation | (GO:0042786) | biological_process | Any mechanism of active immune avoidance which works by regulating the host's antigen processing or presentation pathways, e.g. by blocking any stage in MHC class II presentation. The host is defined as the larger of the organisms involved in a symbiotic interaction. |
| CD4 biosynthetic process | (GO:0045222) | biological_process | The chemical reactions and pathways resulting in the formation of CD4, a CD marker that occurs on T-helper cells and is involved in MHC class II restricted interactions. |
| obsolete active evasion of symbiont immune response via regulation of symbiont antigen processing and presentation | (GO:0051849) | biological_process | OBSOLETE. Any mechanism of active immune avoidance which works by regulating the symbiont's antigen processing or presentation pathways, e.g. by blocking any stage in MHC class II presentation. The symbiont is defined as the smaller of the organisms involved in a symbiotic interaction. This term was made obsolete because it does not represent a real process that exists in nature. |
