| molecular function |
|---|
| | GO:0042289 | | MHC class II protein binding | | 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. |
| | GO:0015026 | | coreceptor activity | | Combining with an extracellular or intracellular messenger, and in cooperation with a nearby primary receptor, initiating a change in cell activity. |
| | GO:0019899 | | enzyme binding | | Interacting selectively and non-covalently with any enzyme. |
| | GO:0005201 | | extracellular matrix structural constituent | | The action of a molecule that contributes to the structural integrity of the extracellular matrix. |
| | GO:0019865 | | immunoglobulin binding | | Interacting selectively and non-covalently with an immunoglobulin. |
| | GO:0005515 | | protein binding | | Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules). |
| | GO:0042803 | | protein homodimerization activity | | Interacting selectively and non-covalently with an identical protein to form a homodimer. |
| | GO:0019901 | | protein kinase binding | | Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate. |
| | GO:1990782 | | protein tyrosine kinase binding | | Interacting selectively and non-covalently with protein tyrosine kinase. |
| | GO:0004872 | | receptor activity | | Combining with an extracellular or intracellular messenger to initiate a change in cell activity. |
| | GO:0004888 | | transmembrane signaling receptor activity | | Combining with an extracellular or intracellular signal and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity or state as part of signal transduction. |
| | GO:0001618 | | virus receptor activity | | Combining with a virus component and mediating entry of the virus into the cell. |
| | GO:0008270 | | zinc ion binding | | Interacting selectively and non-covalently with zinc (Zn) ions. |
| biological process |
|---|
| | GO:0042110 | | T cell activation | | The change in morphology and behavior of a mature or immature T cell resulting from exposure to a mitogen, cytokine, chemokine, cellular ligand, or an antigen for which it is specific. |
| | GO:0031295 | | T cell costimulation | | The process of providing, via surface-bound receptor-ligand pairs, a second, antigen-independent, signal in addition to that provided by the T cell receptor to augment T cell activation. |
| | GO:0030217 | | T cell differentiation | | The process in which a precursor cell type acquires characteristics of a more mature T-cell. A T cell is a type of lymphocyte whose definin characteristic is the expression of a T cell receptor complex. |
| | GO:0050852 | | T cell receptor signaling pathway | | A series of molecular signals initiated by the cross-linking of an antigen receptor on a T cell. |
| | GO:0045058 | | T cell selection | | The process in which T cells that express T cell receptors that are restricted by self MHC protein complexes and tolerant to self antigens are selected for further maturation. |
| | GO:0002250 | | adaptive immune response | | An immune response mediated by cells expressing specific receptors for antigen produced through a somatic diversification process, and allowing for an enhanced secondary response to subsequent exposures to the same antigen (immunological memory). |
| | GO:0007155 | | cell adhesion | | The attachment of a cell, either to another cell or to an underlying substrate such as the extracellular matrix, via cell adhesion molecules. |
| | GO:0007166 | | cell surface receptor signaling pathway | | A series of molecular signals initiated by activation of a receptor on the surface of a cell. The pathway begins with binding of an extracellular ligand to a cell surface receptor, or for receptors that signal in the absence of a ligand, by ligand-withdrawal or the activity of a constitutively active receptor. The pathway ends with regulation of a downstream cellular process, e.g. transcription. |
| | GO:0001816 | | cytokine production | | The appearance of a cytokine due to biosynthesis or secretion following a cellular stimulus, resulting in an increase in its intracellular or extracellular levels. |
| | GO:0050829 | | defense response to Gram-negative bacterium | | Reactions triggered in response to the presence of a Gram-negative bacterium that act to protect the cell or organism. |
| | GO:0030260 | | entry into host cell | | The invasion by an organism of a cell of its host organism. The host is defined as the larger of the organisms involved in a symbiotic interaction. |
| | GO:0007167 | | enzyme linked receptor protein signaling pathway | | Any series of molecular signals initiated by the binding of an extracellular ligand to a receptor on the surface of the target cell, where the receptor possesses catalytic activity or is closely associated with an enzyme such as a protein kinase, and ending with regulation of a downstream cellular process, e.g. transcription. |
| | GO:0019064 | | fusion of virus membrane with host plasma membrane | | Fusion of a viral membrane with the host cell membrane during viral entry. Results in release of the virion contents into the cytoplasm. |
| | GO:0035397 | | helper T cell enhancement of adaptive immune response | | Positive regulation of an adaptive immune response mediated via cytokine production by helper T cell. |
| | GO:0006955 | | immune response | | Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat. |
| | GO:0002376 | | immune system process | | Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats. |
| | GO:0006948 | | induction by virus of host cell-cell fusion | | The process of syncytia-forming cell-cell fusion, caused by a virus. |
| | GO:0032507 | | maintenance of protein location in cell | | Any process in which a protein is maintained in a specific location within, or in the membrane of, a cell, and is prevented from moving elsewhere. |
| | GO:0050870 | | positive regulation of T cell activation | | Any process that activates or increases the frequency, rate or extent of T cell activation. |
| | GO:0042102 | | positive regulation of T cell proliferation | | Any process that activates or increases the rate or extent of T cell proliferation. |
| | GO:0010524 | | positive regulation of calcium ion transport into cytosol | | Any process that increases the rate of the directed movement of calcium ions into the cytosol of a cell. The cytosol is that part of the cytoplasm that does not contain membranous or particulate subcellular components. |
| | GO:0050850 | | positive regulation of calcium-mediated signaling | | Any process that activates or increases the frequency, rate or extent of calcium-mediated signaling. |
| | GO:0045086 | | positive regulation of interleukin-2 biosynthetic process | | Any process that activates or increases the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of interleukin-2. |
| | GO:0050731 | | positive regulation of peptidyl-tyrosine phosphorylation | | Any process that activates or increases the frequency, rate or extent of the phosphorylation of peptidyl-tyrosine. |
| | GO:0045860 | | positive regulation of protein kinase activity | | Any process that activates or increases the frequency, rate or extent of protein kinase activity. |
| | GO:0050863 | | regulation of T cell activation | | Any process that modulates the frequency, rate or extent of T cell activation. |
| | GO:0050690 | | regulation of defense response to virus by virus | | Any viral process that modulates the frequency, rate, or extent of the antiviral response of the host cell or organism. |
| | GO:0032355 | | response to estradiol | | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of stimulus by estradiol, a C18 steroid hormone hydroxylated at C3 and C17 that acts as a potent estrogen. |
| | GO:0033280 | | response to vitamin D | | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a vitamin D stimulus. |
| | GO:0007165 | | signal transduction | | The cellular process in which a signal is conveyed to trigger a change in the activity or state of a cell. Signal transduction begins with reception of a signal (e.g. a ligand binding to a receptor or receptor activation by a stimulus such as light), or for signal transduction in the absence of ligand, signal-withdrawal or the activity of a constitutively active receptor. Signal transduction ends with regulation of a downstream cellular process, e.g. regulation of transcription or regulation of a metabolic process. Signal transduction covers signaling from receptors located on the surface of the cell and signaling via molecules located within the cell. For signaling between cells, signal transduction is restricted to events at and within the receiving cell. |
| | GO:0007169 | | transmembrane receptor protein tyrosine kinase signaling pathway | | A series of molecular signals initiated by the binding of an extracellular ligand to a receptor on the surface of the target cell where the receptor possesses tyrosine kinase activity, and ending with regulation of a downstream cellular process, e.g. transcription. |
| | GO:0016032 | | viral process | | A multi-organism process in which a virus is a participant. The other participant is the host. Includes infection of a host cell, replication of the viral genome, and assembly of progeny virus particles. In some cases the viral genetic material may integrate into the host genome and only subsequently, under particular circumstances, 'complete' its life cycle. |
| cellular component |
|---|
| | GO:0042101 | | T cell receptor complex | | A protein complex that contains a disulfide-linked heterodimer of T cell receptor (TCR) chains, which are members of the immunoglobulin superfamily, and mediates antigen recognition, ultimately resulting in T cell activation. The TCR heterodimer is associated with the CD3 complex, which consists of the nonpolymorphic polypeptides gamma, delta, epsilon, zeta, and, in some cases, eta (an RNA splice variant of zeta) or Fc epsilon chains. |
| | GO:0009986 | | cell surface | | The external part of the cell wall and/or plasma membrane. |
| | GO:0005769 | | early endosome | | A membrane-bounded organelle that receives incoming material from primary endocytic vesicles that have been generated by clathrin-dependent and clathrin-independent endocytosis; vesicles fuse with the early endosome to deliver cargo for sorting into recycling or degradation pathways. |
| | GO:0005788 | | endoplasmic reticulum lumen | | The volume enclosed by the membranes of the endoplasmic reticulum. |
| | GO:0005789 | | endoplasmic reticulum membrane | | The lipid bilayer surrounding the endoplasmic reticulum. |
| | GO:0009897 | | external side of plasma membrane | | The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface. |
| | GO:0016021 | | integral component of membrane | | The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane. |
| | GO:0016020 | | membrane | | A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it. |
| | GO:0045121 | | membrane raft | | Any of the small (10-200 nm), heterogeneous, highly dynamic, sterol- and sphingolipid-enriched membrane domains that compartmentalize cellular processes. Small rafts can sometimes be stabilized to form larger platforms through protein-protein and protein-lipid interactions. |
| | GO:0005886 | | plasma membrane | | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. |
Description
