| molecular function |
|---|
| | GO:0001851 | | complement component C3b binding | | Interacting selectively and non-covalently with the C3b product of the complement cascade. |
| | GO:0004877 | | complement component C3b receptor activity | | Combining with the C3b product of the complement cascade and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. |
| | GO:0001855 | | complement component C4b binding | | Interacting selectively and non-covalently with the C4b product of the classical complement cascade. |
| | GO:0001861 | | complement component C4b receptor activity | | Combining with the C4b product of the classical complement cascade and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. |
| | GO:0001618 | | virus receptor activity | | Combining with a virus component and mediating entry of the virus into the cell. |
| biological process |
|---|
| | GO:0006958 | | complement activation, classical pathway | | Any process involved in the activation of any of the steps of the classical pathway of the complement cascade which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes. |
| | GO:0002430 | | complement receptor mediated signaling pathway | | A series of molecular signals generated as a consequence of a component of the complement pathway binding to a complement receptor. Such components include both whole complement proteins and fragments of complement proteins generated through the activity of the complement pathway. |
| | 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:0045087 | | innate immune response | | Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens. |
| | GO:0045957 | | negative regulation of complement activation, alternative pathway | | Any process that stops, prevents, or reduces the frequency, rate or extent of complement activation by the alternative pathway. |
| | GO:0045959 | | negative regulation of complement activation, classical pathway | | Any process that stops, prevents, or reduces the frequency, rate or extent of complement activation by the classical pathway. |
| | GO:1900004 | | negative regulation of serine-type endopeptidase activity | | Any process that stops, prevents or reduces the frequency, rate or extent of serine-type endopeptidase activity. |
| | GO:1900005 | | positive regulation of serine-type endopeptidase activity | | Any process that activates or increases the frequency, rate or extent of serine-type endopeptidase activity. |
| | GO:0030449 | | regulation of complement activation | | Any process that modulates the frequency, rate or extent of complement activation. |
| | GO:0046718 | | viral entry into host cell | | The process that occurs after viral attachment by which a virus, or viral nucleic acid, breaches the plasma membrane or cell envelope and enters the host cell. The process ends when the viral nucleic acid is released into the host cell cytoplasm. |
| | 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:0009986 | | cell surface | | The external part of the cell wall and/or plasma membrane. |
| | GO:0070062 | | extracellular exosome | | A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm. |
| | 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:0005887 | | integral component of plasma membrane | | The component of the plasma 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: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
