GO:0007165
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signal transduction
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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:0006952
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defense response
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Reactions, triggered in response to the presence of a foreign body or the occurrence of an injury, which result in restriction of damage to the organism attacked or prevention/recovery from the infection caused by the attack. |
GO:0009607
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response to biotic stimulus
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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 biotic stimulus, a stimulus caused or produced by a living organism. |
GO:0006950
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response to stress
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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 disturbance in organismal or cellular homeostasis, usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation). |
GO:0035556
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intracellular signal transduction
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The process in which a signal is passed on to downstream components within the cell, which become activated themselves to further propagate the signal and finally trigger a change in the function or state of the cell. |
GO:0009966
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regulation of signal transduction
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Any process that modulates the frequency, rate or extent of signal transduction. |
GO:0006955
|
immune response
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Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat. |
GO:0031347
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regulation of defense response
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Any process that modulates the frequency, rate or extent of a defense response. |
GO:0051716
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cellular response to stimulus
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Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus. The process begins with detection of the stimulus by a cell and ends with a change in state or activity or the cell. |
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. |
GO:0030683
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evasion or tolerance by virus of host immune response
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Any process, either active or passive, by which a virus avoids the effects of the host organism's immune response. The host is defined as the larger of the organisms involved in a symbiotic interaction. |
GO:0007154
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cell communication
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Any process that mediates interactions between a cell and its surroundings. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment. |
GO:0045087
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innate immune response
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Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens. |
GO:0009987
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cellular process
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Any process that is carried out at the cellular level, but not necessarily restricted to a single cell. For example, cell communication occurs among more than one cell, but occurs at the cellular level. |
GO:0051607
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defense response to virus
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Reactions triggered in response to the presence of a virus that act to protect the cell or organism. |
GO:0019048
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modulation by virus of host morphology or physiology
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The process in which a virus effects a change in the structure or processes of its host organism. |
GO:0002682
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regulation of immune system process
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Any process that modulates the frequency, rate, or extent of an immune system process. |
GO:0031348
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negative regulation of defense response
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Any process that stops, prevents, or reduces the frequency, rate or extent of a defense response. |
GO:0044763
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single-organism cellular process
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Any process that is carried out at the cellular level, occurring within a single organism. |
GO:0044699
|
single-organism process
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A biological process that involves only one organism. |
GO:0008150
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biological_process
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Any process specifically pertinent to the functioning of integrated living units: cells, tissues, organs, and organisms. A process is a collection of molecular events with a defined beginning and end. |
GO:0003674
|
molecular_function
|
Elemental activities, such as catalysis or binding, describing the actions of a gene product at the molecular level. A given gene product may exhibit one or more molecular functions. |
GO:0050896
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response to stimulus
|
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 stimulus. The process begins with detection of the stimulus and ends with a change in state or activity or the cell or organism. |
GO:0065007
|
biological regulation
|
Any process that modulates a measurable attribute of any biological process, quality or function. |
GO:0050794
|
regulation of cellular process
|
Any process that modulates the frequency, rate or extent of a cellular process, any of those that are carried out at the cellular level, but are not necessarily restricted to a single cell. For example, cell communication occurs among more than one cell, but occurs at the cellular level. |
GO:0050789
|
regulation of biological process
|
Any process that modulates the frequency, rate or extent of a biological process. Biological processes are regulated by many means; examples include the control of gene expression, protein modification or interaction with a protein or substrate molecule. |
GO:0065009
|
regulation of molecular function
|
Any process that modulates the frequency, rate or extent of a molecular function, an elemental biological activity occurring at the molecular level, such as catalysis or binding. |
GO:0048523
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negative regulation of cellular process
|
Any process that stops, prevents, or reduces the frequency, rate or extent of a cellular process, any of those that are carried out at the cellular level, but are not necessarily restricted to a single cell. For example, cell communication occurs among more than one cell, but occurs at the cellular level. |
GO:0048519
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negative regulation of biological process
|
Any process that stops, prevents, or reduces the frequency, rate or extent of a biological process. Biological processes are regulated by many means; examples include the control of gene expression, protein modification or interaction with a protein or substrate molecule. |
GO:0044764
|
multi-organism cellular process
|
Any process that is carried out at the cellular level which involves another organism of the same or different species. |