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 an ultraviolet radiation (UV light) stimulus. Ultraviolet radiation is electromagnetic radiation with a wavelength in the range of 10 to 380 nanometers.

The process that mediates signaling interactions between one cell and another cell by the transfer of small, water-soluble molecules or metabolites between their adjacent cytoplasms via intercellular protein channels.

The pigment-protein complex primarily associated to PSII in higher plants, green algae and cyanobacteria that directly transfers electrons to the reaction center.

Catalysis of the exonucleolytic cleavage of oligoribonucleotides to yield ribonucleoside 5'-phosphates.

Catalysis of the hydrolysis of phosphodiester bonds in chains of RNA.

Catalysis of the exonucleolytic cleavage of oligonucleotides to yield nucleoside 5'-phosphates.

Pigment-protein complex primarily associated to PSII in plants, green algae and cyanobacteria. Involved in state transitions that cause migration to PSI under certain environmental conditions such as high light.

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 tumor necrosis factor 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 cytokine stimulus.

A complex, composed of a cluster of manganese, calcium and chloride ions bound to extrinsic proteins, that catalyzes the splitting of water to O2 and 4 H+. In cyanobacteria there are five extrinsic proteins in OEC (PsbO, PsbP-like, PsbQ-like, PsbU and PsbV), while in plants there are only three (PsbO, PsbP and PsbQ).

Catalysis of the exonucleolytic cleavage of oligodeoxyribonucleotides to yield deoxyribonucleoside 5'-phosphates.

Catalysis of the hydrolysis of ester linkages within deoxyribonucleic acid.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a leucoplast. A leucoplast is a colorless plastid involved in the synthesis of monoterpenes.

A process that is carried out at the cellular level which results in the assembly, arrangement of constituent parts, or disassembly of a plastid.

A protein complex that possesses GTP cyclohydrolase I activity. In E. coli and human, the complex is a homodecamer, and monomers are catalytically inactive.

Any process that modulates the frequency, rate or extent of cell communication via electrical coupling. Cell communication via electrical coupling is the process that mediates signaling interactions between one cell and another cell by transfer of current between their adjacent cytoplasms via intercellular protein channels.

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 laminar fluid shear stress stimulus. Laminar fluid flow is the force acting on an object in a system where the fluid is moving across a solid surface in parallel layers. As an example, laminar shear stress can be seen where blood flows against the luminal side of blood vessel walls.

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 fluid shear stress stimulus. Fluid shear stress is the force acting on an object in a system where the fluid is moving across a solid surface.

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 reactive oxygen species stimulus. Reactive oxygen species include singlet oxygen, superoxide, and oxygen free radicals.