Any process that modulates the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).

Any process that decreases the frequency, rate or extent of transcription from an RNA polymerase II promoter as a result of a UV damage stimulus.

Any process that stops, prevents, or reduces the frequency, rate or extent of transcription mediated by RNA polymerase II.

Catalysis of the reaction: histone H4 N6-acetyl-L-lysine (position 16) + H2O = histone H4 L-lysine (position 16) + acetate. This reaction represents the removal of an acetyl group from lysine at position 16 of the histone H4 protein.

Catalysis of the reaction: histone N6-acetyl-L-lysine + H2O = histone L-lysine + acetate. This reaction represents the removal of an acetyl group from a histone, a class of proteins complexed to DNA in chromatin and chromosomes.

The antenna complex of photosystem II. A photosystem has two closely linked components, an antenna containing light-absorbing pigments and a reaction center. Each antenna contains one or more light-harvesting complexes (LHCs).

The aggregation, arrangement and bonding together of strand exchange proteins (recombinases) to form higher order oligomers on single-stranded DNA resulting in meiotic recombination. Meiotic recombination is the cell cycle process in which double strand breaks are formed and repaired through a double Holliday junction intermediate.

During meiosis, the aggregation, arrangement and bonding together of strand exchange proteins (recombinases) to form higher order oligomers on single-stranded DNA.

The aggregation, arrangement and bonding together of strand exchange proteins (recombinases) to form higher order oligomers on single-stranded DNA resulting in meiotic gene conversion. Meiotic gene conversion is the cell cycle process in which genetic information is transferred from one helix to another.

Catalysis of the reaction: ATP + protein L-histidine = ADP + protein phospho-L-histidine.

The cell cycle process in which double strand breaks are formed and repaired through a double Holliday junction intermediate resulting in meiotic recombination. Meiotic recombination is the cell cycle process in which double strand breaks are formed and repaired through a double Holliday junction intermediate.

The cell cycle process in which the nucleoprotein complex (composed of the broken single-strand DNA and the recombinase) searches and identifies a region of homology in intact duplex DNA. The broken single-strand DNA displaces the like strand and forms Watson-Crick base pairs with its complement, forming a duplex in which each strand is from one of the two recombining DNA molecules. This occurs during meiosis.

OBSOLETE. Processes by which a molecule of water is oxidized during photosynthesis. P680+, the photochemically oxidized reaction-center chlorophyll of PSII, is a strong biological oxidant. The reduction potential of P680+ is more positive than that of water, and thus it can oxidize water to give O2 and H+ ions. The oxygen escapes as a gas while the H+ ions remain in solution inside the thylakoid vesicle.

The antenna complex of photosystem I. A photosystem has two closely linked components, an antenna containing light-absorbing pigments and a reaction center. Each antenna contains one or more light-harvesting complexes (LHCs).

The cell cycle process in which double strand breaks are formed and repaired through a double Holliday junction intermediate resulting in meiotic recombination.

The modification of histone H3 by the removal of a methyl group from a trimetylated lysine at position 4 of the histone.

The modification of histone H3 by the removal of a methyl group from lysine at position 4 of the histone.

Any process that modulates the frequency, rate or extent of abscisic acid (ABA) signaling.

Any process that modulates the frequency, rate or extent of cellular response to alcohol.

Any process that stops, prevents, or reduces the frequency, rate or extent of abscisic acid (ABA) signaling.