UniProt functional annotation for P02309



	UniProt functional annotation for P02309

UniProt code: P02309.

Organism: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast).

Taxonomy: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces.

Function: Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. Component of the UAF (upstream activation factor) complex which interacts with the upstream element of the RNA polymerase I promoter and forms a stable preinitiation complex. Together with SPT15/TBP UAF seems to stimulate basal transcription to a fully activated level.

Subunit: The nucleosome is a histone octamer containing two molecules each of H2A, H2B, H3 and H4 assembled in one H3-H4 heterotetramer and two H2A-H2B heterodimers. The octamer wraps approximately 147 bp of DNA. Histone H4 is a component of the UAF (upstream activation factor) complex which consists of UAF30, RRN5, RRN9, RRN10, and histones H3 and H4. {ECO:0000269|PubMed:9391047}.

Subcellular location: Nucleus. Chromosome.

Ptm: Glutarylation at Lys-92 (H4K91glu) destabilizes nucleosomes by promoting dissociation of the H2A-H2B dimers from nucleosomes. {ECO:0000269|PubMed:31542297}.

Miscellaneous: Present with 524000 molecules/cell in log phase SD medium. {ECO:0000269|PubMed:14562106}.

Similarity: Belongs to the histone H4 family. {ECO:0000305}.

Annotations taken from UniProtKB at the EBI.


Organism:		Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast).
Taxonomy:		Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces.



Function:		Core component of nucleosome. Nucleosomes wrap and compact DNA into chromatin, limiting DNA accessibility to the cellular machineries which require DNA as a template. Histones thereby play a central role in transcription regulation, DNA repair, DNA replication and chromosomal stability. DNA accessibility is regulated via a complex set of post-translational modifications of histones, also called histone code, and nucleosome remodeling. Component of the UAF (upstream activation factor) complex which interacts with the upstream element of the RNA polymerase I promoter and forms a stable preinitiation complex. Together with SPT15/TBP UAF seems to stimulate basal transcription to a fully activated level.


Subunit:		The nucleosome is a histone octamer containing two molecules each of H2A, H2B, H3 and H4 assembled in one H3-H4 heterotetramer and two H2A-H2B heterodimers. The octamer wraps approximately 147 bp of DNA. Histone H4 is a component of the UAF (upstream activation factor) complex which consists of UAF30, RRN5, RRN9, RRN10, and histones H3 and H4. {ECO:0000269\|PubMed:9391047}.
Subcellular location:		Nucleus. Chromosome.
Ptm:		Glutarylation at Lys-92 (H4K91glu) destabilizes nucleosomes by promoting dissociation of the H2A-H2B dimers from nucleosomes. {ECO:0000269\|PubMed:31542297}.
Miscellaneous:		Present with 524000 molecules/cell in log phase SD medium. {ECO:0000269\|PubMed:14562106}.
Similarity:		Belongs to the histone H4 family. {ECO:0000305}.