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The process in which membrane potential changes in the depolarizing direction from the resting potential, usually from negative to positive. For example, the initial depolarization during the rising phase of an action potential is in the direction from the negative resting potential towards the positive membrane potential that will be the peak of the action potential. Any process that modulates the establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane. Any process that modulates the establishment or extent of the excitatory postsynaptic potential (EPSP) which is a temporay increase in postsynaptic potential due to the flow of positively charged ions into the postsynaptic cell. The flow of ions that causes an EPSP is an excitatory postsynaptic current (EPSC) and makes it easier for the neuron to fire an action potential. Any process involved in the maintenance of an internal steady-state of ions at the level of a cell. Any process that modulates the rate, frequency or extent of membrane depolarization. Membrane depolarization is the process in which membrane potential changes in the depolarizing direction from the resting potential, usually from negative to positive. The process in which the membrane potential of the mitochondria changes in the depolarizing direction from the resting potential, from negative to positive.

View Gene Ontology (GO) Term

GO TERM SUMMARY
Name: membrane depolarization
Acc: GO:0051899
Aspect: Biological Process
Desc: The process in which membrane potential changes in the depolarizing direction from the resting potential, usually from negative to positive. For example, the initial depolarization during the rising phase of an action potential is in the direction from the negative resting potential towards the positive membrane potential that will be the peak of the action potential.
Proteins in PDR annotated with:
   This term: 51 [Search]
   Term or descendants: 128 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0051899 - membrane depolarization (interactive image map)
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