P02276 · H2A2_WHEAT

Function

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.

GO annotations

all annotationsall molecular functionnucleotide bindingmolecular_functionnucleic acid bindingdna bindingchromatin bindingdna-binding transcription factor activityrna bindingcytoskeletal motor activitycatalytic activitynuclease activitysignaling receptor bindingstructural molecule activitytransporter activitybindingprotein bindingtranslation factor activity, rna bindinglipid bindingkinase activitytransferase activityhydrolase activityoxygen bindingenzyme regulator activitycarbohydrate bindingsignaling receptor activitytranslation regulator activitytranscription regulator activityother molecular functionall biological processcarbohydrate metabolic processgeneration of precursor metabolites and energynucleobase-containing compound metabolic processdna metabolic processtranslationlipid metabolic processtransportresponse to stresscell cyclecell communicationsignal transductioncell-cell signalingmulticellular organism developmentcircadian rhythmbiological_processmetabolic processcatabolic processbiosynthetic processresponse to light stimulusresponse to external stimulustropismresponse to biotic stimulusresponse to abiotic stimulusresponse to endogenous stimulusembryo developmentpost-embryonic developmentfruit ripeningabscissionpollinationflower developmentcellular processprogrammed cell deathphotosynthesiscellular component organizationcell growthprotein metabolic processcellular homeostasissecondary metabolic processreproductive processcell differentiationprotein modification processgrowthepigenetic regulation of gene expressionresponse to chemicalanatomical structure developmentregulation of molecular functionother biological processall cellular componentcellular_componentextracellular regioncell wallintracellular anatomical structurenucleusnuclear envelopenucleoplasmnucleoluscytoplasmmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuscytosolribosomecytoskeletonplasma membranechloroplastplastidthylakoidmembraneexternal encapsulating structureother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentnucleosome
Cellular Componentnucleus
Molecular Functionnucleosomal DNA binding
Molecular Functionprotein heterodimerization activity
Molecular Functionstructural constituent of chromatin
Biological Processheterochromatin formation

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Histone H2A.2.1

Organism names

  • Taxonomic identifier
  • Taxonomic lineage
    Eukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Poales > Poaceae > BOP clade > Pooideae > Triticodae > Triticeae > Triticinae > Triticum

Accessions

  • Primary accession
    P02276

Proteomes

Subcellular Location

PTM/Processing

Features

Showing features for modified residue, chain.

TypeIDPosition(s)Description
Modified residue1N-acetylmethionine
ChainPRO_00000552921-151Histone H2A.2.1

Post-translational modification

Phosphorylated within its C-terminal part, probably at the SPKK motifs.

Keywords

Proteomic databases

PTM databases

Expression

Gene expression databases

Interaction

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.

Protein-protein interaction databases

Structure

Family & Domains

Features

Showing features for region, motif.

TypeIDPosition(s)Description
Region1-22Disordered
Region129-151Disordered
Motif140-143SPKK motif 1
Motif147-150SPKK motif 2

Domain

Contains 2 SPKK motifs which may interact with the minor groove of A/T-rich DNA sites. Phosphorylation of this motif may regulate DNA binding. This motif is reiterated in both termini of histone H1 and in the N-terminus of sea urchin histones H2B, but its presence in the C-terminus seems to be unique to plant H2A.

Sequence similarities

Belongs to the histone H2A family.

Phylogenomic databases

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Length
    151
  • Mass (Da)
    16,013
  • Last updated
    1988-11-01 v1
  • Checksum
    968D4929D1C7669B
MDGSKAKKVAAKKFGGPRKKSVTKSIKAGLQFPVGRIGRYLKKGRYAQRVGSGAPVYLAAVLEYLAAEVLELAGNAAKDNKKTRIVPRHLLLAIRNDQELGRLLSGVTIAHGGVIPNINPVLLPKKAAEKAEKAGAAPKSPKKTTKSPKKA

Keywords

Sequence databases

Similar Proteins

Disclaimer

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