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Protein

Histone H2A

Gene
N/A
Organism
Agaricus bisporus (White button mushroom)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at transcript leveli

Functioni

Core component of nucleosome which plays a central role in DNA double strand break (DSB) repair. 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 - Molecular functioni

  1. DNA binding Source: UniProtKB-KW

GO - Biological processi

  1. DNA repair Source: UniProtKB-KW
Complete GO annotation...

Keywords - Biological processi

DNA damage, DNA repair

Keywords - Ligandi

DNA-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Histone H2A
OrganismiAgaricus bisporus (White button mushroom)
Taxonomic identifieri5341 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaBasidiomycotaAgaricomycotinaAgaricomycetesAgaricomycetidaeAgaricalesAgaricaceaeAgaricus

Subcellular locationi

GO - Cellular componenti

  1. nucleosome Source: UniProtKB-KW
  2. nucleus Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Chromosome, Nucleosome core, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methioninei1 – 11RemovedBy similarity
Chaini2 – 139138Histone H2APRO_0000055196Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei2 – 21N-acetylserineBy similarity
Modified residuei9 – 91N6-acetyllysineBy similarity
Modified residuei13 – 131N6-acetyllysineBy similarity
Modified residuei110 – 1101N5-methylglutamineBy similarity
Modified residuei136 – 1361PhosphoserineBy similarity

Post-translational modificationi

Phosphorylated to form H2AS128ph (gamma-H2A) in response to DNA double-strand breaks (DSBs) generated by exogenous genotoxic agents and by stalled replication forks. Phosphorylation is dependent on the DNA damage checkpoint kinases MEC1/ATR and TEL1/ATM, spreads on either side of a detected DSB site and may mark the surrounding chromatin for recruitment of proteins required for DNA damage signaling and repair. Gamma-H2A is removed from the DNA prior to the strand invasion-primer extension step of the repair process and subsequently dephosphorylated. Dephosphorylation is necessary for efficient recovery from the DNA damage checkpoint (By similarity).By similarity
Acetylated by ESA1 to form H2AK4ac and H2AK7ac.By similarity

Keywords - PTMi

Acetylation, Methylation, Phosphoprotein

Proteomic databases

PRIDEiQ9HGX4.

Interactioni

Subunit structurei

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.

Structurei

3D structure databases

ProteinModelPortaliQ9HGX4.
SMRiQ9HGX4. Positions 18-128.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi136 – 1372[ST]-Q motif

Domaini

The [ST]-Q motif constitutes a recognition sequence for kinases from the PI3/PI4-kinase family.

Sequence similaritiesi

Belongs to the histone H2A family.Curated

Phylogenomic databases

OMAiYIHQNLL.

Family and domain databases

Gene3Di1.10.20.10. 1 hit.
InterProiIPR009072. Histone-fold.
IPR007125. Histone_core_D.
IPR002119. Histone_H2A.
[Graphical view]
PfamiPF00125. Histone. 1 hit.
[Graphical view]
PRINTSiPR00620. HISTONEH2A.
SMARTiSM00414. H2A. 1 hit.
[Graphical view]
SUPFAMiSSF47113. SSF47113. 1 hit.
PROSITEiPS00046. HISTONE_H2A. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

Q9HGX4-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MSGKGKAGKS GGKAGSETKS MSRSSKAGLQ FPVGRVHRLL KKGNYAQRVG
60 70 80 90 100
AGAPVYMAAV LEYLAAEILE LAGNAARDNK KQRIVPRHLQ LAIRNDEELH
110 120 130
KLLGNVVISQ GGVVPHIAPE LLPSKSSKGK KDEGVSQEL
Length:139
Mass (Da):14,734
Last modified:January 23, 2007 - v3
Checksum:iFB870B8978DD9CF7
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ293758 mRNA. Translation: CAC03460.1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ293758 mRNA. Translation: CAC03460.1.

3D structure databases

ProteinModelPortaliQ9HGX4.
SMRiQ9HGX4. Positions 18-128.
ModBaseiSearch...
MobiDBiSearch...

Proteomic databases

PRIDEiQ9HGX4.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Phylogenomic databases

OMAiYIHQNLL.

Family and domain databases

Gene3Di1.10.20.10. 1 hit.
InterProiIPR009072. Histone-fold.
IPR007125. Histone_core_D.
IPR002119. Histone_H2A.
[Graphical view]
PfamiPF00125. Histone. 1 hit.
[Graphical view]
PRINTSiPR00620. HISTONEH2A.
SMARTiSM00414. H2A. 1 hit.
[Graphical view]
SUPFAMiSSF47113. SSF47113. 1 hit.
PROSITEiPS00046. HISTONE_H2A. 1 hit.
[Graphical view]
ProtoNetiSearch...

Publicationsi

  1. "Efficient isolation of genes differentially expressed on cellulose by suppression subtractive hybridization in Agaricus bisporus."
    Morales-Almora P., Thurston C.F.
    Mycol. Res. 107:401-407(2003) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [MRNA].
    Strain: D649.

Entry informationi

Entry nameiH2A_AGABI
AccessioniPrimary (citable) accession number: Q9HGX4
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 31, 2004
Last sequence update: January 23, 2007
Last modified: January 7, 2015
This is version 61 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

Miscellaneous

In contrast to vertebrates and insects, its C-terminus is not monoubiquitinated.Curated

Caution

To ensure consistency between histone entries, we follow the 'Brno' nomenclature for histone modifications, with positions referring to those used in the literature for the 'closest' model organism. Due to slight variations in histone sequences between organisms and to the presence of initiator methionine in UniProtKB/Swiss-Prot sequences, the actual positions of modified amino acids in the sequence generally differ. In this entry the following conventions are used: H2AK4ac = acetylated Lys-9; H2AK7ac = acetylated Lys-13; H2AS128ph = phosphorylated Ser-136.Curated

Documents

  1. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into Uniref entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.