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Q6BKW8 (H2A1_DEBHA) Reviewed, UniProtKB/Swiss-Prot

Last modified May 14, 2014. Version 72. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Protein attributes

Sequence length130 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceInferred from homology

General annotation (Comments)

Function

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.

Subunit structure

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.

Subcellular location

Nucleus By similarity. Chromosome By similarity.

Domain

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

Post-translational modification

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.

Acetylated by ESA1 to form H2AK4ac and H2AK7ac By similarity.

Miscellaneous

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

Sequence similarities

Belongs to the histone H2A family.

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-5; H2AK7ac = acetylated Lys-7; H2AS128ph = phosphorylated Ser-127.

Ontologies

Keywords
   Biological processDNA damage
DNA repair
   Cellular componentChromosome
Nucleosome core
Nucleus
   LigandDNA-binding
   PTMAcetylation
Methylation
Phosphoprotein
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processDNA repair

Inferred from electronic annotation. Source: UniProtKB-KW

nucleosome assembly

Inferred from electronic annotation. Source: InterPro

   Cellular_componentnucleosome

Inferred from electronic annotation. Source: UniProtKB-KW

nucleus

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functionDNA binding

Inferred from electronic annotation. Source: UniProtKB-KW

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed By similarity
Chain2 – 130129Histone H2A.1
PRO_0000228728

Regions

Motif127 – 1282[ST]-Q motif

Sites

Site1191Not ubiquitinated Probable

Amino acid modifications

Modified residue21N-acetylserine By similarity
Modified residue51N6-acetyllysine By similarity
Modified residue71N6-acetyllysine By similarity
Modified residue1051N5-methylglutamine By similarity
Modified residue1271Phosphoserine By similarity

Sequences

Sequence LengthMass (Da)Tools
Q6BKW8 [UniParc].

Last modified January 23, 2007. Version 3.
Checksum: E5C741FBA63A57D2

FASTA13013,861
        10         20         30         40         50         60 
MSGGKGKAGS SEKASTSRSA KAGLTFPVGR VHRLLRKGNY AQRVGSGAPV YLTSVLEYLA 

        70         80         90        100        110        120 
AEILELAGNA ARDNKKSRII PRHLQLAIRN DEELNKLLGH VTIAQGGVLP NIHQNLLPKK 

       130 
SAKGKASQEL 

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CR382138 Genomic DNA. Translation: CAG89536.1.
RefSeqXP_461153.1. XM_461153.1.

3D structure databases

ProteinModelPortalQ6BKW8.
SMRQ6BKW8. Positions 13-120.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING4959.Q6BKW8.

Proteomic databases

PRIDEQ6BKW8.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID2904315.
KEGGdha:DEHA2F18282g.

Phylogenomic databases

HOGENOMHOG000234652.
KOK11251.
OMAMSAGPDD.
OrthoDBEOG7GN30N.

Family and domain databases

Gene3D1.10.20.10. 1 hit.
InterProIPR009072. Histone-fold.
IPR007125. Histone_core_D.
IPR002119. Histone_H2A.
[Graphical view]
PfamPF00125. Histone. 1 hit.
[Graphical view]
PRINTSPR00620. HISTONEH2A.
SMARTSM00414. H2A. 1 hit.
[Graphical view]
SUPFAMSSF47113. SSF47113. 1 hit.
PROSITEPS00046. HISTONE_H2A. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameH2A1_DEBHA
AccessionPrimary (citable) accession number: Q6BKW8
Entry history
Integrated into UniProtKB/Swiss-Prot: March 21, 2006
Last sequence update: January 23, 2007
Last modified: May 14, 2014
This is version 72 of the entry and version 3 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families