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Protein

Histone H2A

Gene

HTA1

Organism
Podospora anserina (Pleurage anserina)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

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.

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-6; H2AK7ac = acetylated Lys-10; H2AS128ph = phosphorylated Ser-132.Curated

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionDNA-binding
Biological processDNA damage, DNA repair

Names & Taxonomyi

Protein namesi
Recommended name:
Histone H2A
Gene namesi
Name:HTA1
ORF Names:Pa5D0006
OrganismiPodospora anserina (Pleurage anserina)
Taxonomic identifieri5145 [NCBI]
Taxonomic lineageiEukaryotaFungiDikaryaAscomycotaPezizomycotinaSordariomycetesSordariomycetidaeSordarialesLasiosphaeriaceaePodospora

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cell wall Cytoskeleton Vacuole Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Chromosome, Nucleosome core, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00002287332 – 135Histone H2AAdd BLAST134

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei6N6-acetyllysineBy similarity1
Modified residuei10N6-acetyllysineBy similarity1
Modified residuei107N5-methylglutamineBy similarity1
Modified residuei132PhosphoserineBy similarity1

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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sitei121Not ubiquitinatedCurated1

Keywords - PTMi

Acetylation, Methylation, Phosphoprotein

Proteomic databases

PRIDEiQ875B8

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.

GO - Molecular functioni

Structurei

3D structure databases

ProteinModelPortaliQ875B8
SMRiQ875B8
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi132 – 133[ST]-Q motif2

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

eggNOGiKOG1756 Eukaryota
COG5262 LUCA

Family and domain databases

CDDicd00074 H2A, 1 hit
Gene3Di1.10.20.10, 1 hit
InterProiView protein in InterPro
IPR009072 Histone-fold
IPR002119 Histone_H2A
IPR007125 Histone_H2A/H2B/H3
IPR032454 Histone_H2A_C
IPR032458 Histone_H2A_CS
PfamiView protein in Pfam
PF00125 Histone, 1 hit
PF16211 Histone_H2A_C, 1 hit
PRINTSiPR00620 HISTONEH2A
SMARTiView protein in SMART
SM00414 H2A, 1 hit
SUPFAMiSSF47113 SSF47113, 1 hit
PROSITEiView protein in PROSITE
PS00046 HISTONE_H2A, 1 hit

Sequencei

Sequence statusi: Complete.

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

Q875B8-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTGGGKSGGK ASSGKNAQSR SSKAGLAFPV GRVHRLLRKG NYAQRVGAGA
60 70 80 90 100
PVYLAAVLEY LAAEILELAG NAARDNKKTR IIPRHLQLAI RNDEELNKLL
110 120 130
GHVTIAQGGV LPNIHQNLLP KKTGTKPGKN ASQEL
Length:135
Mass (Da):14,251
Last modified:January 23, 2007 - v3
Checksum:i90785684E485DF3F
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX088700 Genomic DNA Translation: CAD60693.1

Similar proteinsi

Entry informationi

Entry nameiH2A_PODAS
AccessioniPrimary (citable) accession number: Q875B8
Entry historyiIntegrated into UniProtKB/Swiss-Prot: March 21, 2006
Last sequence update: January 23, 2007
Last modified: May 23, 2018
This is version 70 of the entry and version 3 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programFungal Protein Annotation Program

Miscellaneousi

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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