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Protein

Histone H2B.5

Gene
N/A
Organism
Triticum aestivum (Wheat)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Experimental evidence at protein leveli

Functioni

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 - Molecular functioni

Complete GO annotation...

Keywords - Ligandi

DNA-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Histone H2B.5
Alternative name(s):
wcH2B-6
OrganismiTriticum aestivum (Wheat)
Taxonomic identifieri4565 [NCBI]
Taxonomic lineageiEukaryotaViridiplantaeStreptophytaEmbryophytaTracheophytaSpermatophytaMagnoliophytaLiliopsidaPoalesPoaceaeBOP cladePooideaeTriticodaeTriticeaeTriticinaeTriticum
Proteomesi
  • UP000019116 Componenti: Unassembled WGS sequence

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Chromosome, Nucleosome core, Nucleus

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Initiator methionineiRemovedBy similarity
Chaini2 – 136135Histone H2B.5PRO_0000239425Add
BLAST

Amino acid modifications

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Modified residuei7 – 71N6-acetyllysineBy similarity
Modified residuei26 – 261N6-acetyllysineBy similarity
Cross-linki132 – 132Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)By similarity

Post-translational modificationi

Can be acetylated to form H2BK6ac and H2BK33ac.By similarity
Monoubiquitinated to form H2BK143ub1; may give a specific tag for epigenetic transcriptional activation.By similarity

Keywords - PTMi

Acetylation, Isopeptide bond, Ubl conjugation

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

ProteinModelPortaliQ43216.
SMRiQ43216. Positions 11-136.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the histone H2B family.Curated

Family and domain databases

Gene3Di1.10.20.10. 1 hit.
InterProiIPR009072. Histone-fold.
IPR007125. Histone_H2A/H2B/H3.
IPR000558. Histone_H2B.
[Graphical view]
PANTHERiPTHR23428. PTHR23428. 1 hit.
PfamiPF00125. Histone. 1 hit.
[Graphical view]
PRINTSiPR00621. HISTONEH2B.
SMARTiSM00427. H2B. 1 hit.
[Graphical view]
SUPFAMiSSF47113. SSF47113. 1 hit.
PROSITEiPS00357. HISTONE_H2B. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

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

Q43216-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MAPKAEKKPA AEKKPVETEK KPKAEKRVPG KDGGADKKKK KAKKSVETYK
60 70 80 90 100
IYIFKVLKQV HPDIGISSKA MSIMNSFIND IFEKLAGESA KLARYNKKPT
110 120 130
ITSREIQTAV RLVLPGELAK HAVSEGTKAV TKFTSS
Length:136
Mass (Da):14,969
Last modified:January 23, 2007 - v3
Checksum:i7524E778F092FA54
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D37942 mRNA. Translation: BAA07156.1.
PIRiS56684.
UniGeneiTa.54386.

Genome annotation databases

EnsemblPlantsiTraes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.
GrameneiTraes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D37942 mRNA. Translation: BAA07156.1.
PIRiS56684.
UniGeneiTa.54386.

3D structure databases

ProteinModelPortaliQ43216.
SMRiQ43216. Positions 11-136.
ModBaseiSearch...
MobiDBiSearch...

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblPlantsiTraes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.
GrameneiTraes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.1; Traes_3B_5EE8348ED1.

Family and domain databases

Gene3Di1.10.20.10. 1 hit.
InterProiIPR009072. Histone-fold.
IPR007125. Histone_H2A/H2B/H3.
IPR000558. Histone_H2B.
[Graphical view]
PANTHERiPTHR23428. PTHR23428. 1 hit.
PfamiPF00125. Histone. 1 hit.
[Graphical view]
PRINTSiPR00621. HISTONEH2B.
SMARTiSM00427. H2B. 1 hit.
[Graphical view]
SUPFAMiSSF47113. SSF47113. 1 hit.
PROSITEiPS00357. HISTONE_H2B. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiH2B5_WHEAT
AccessioniPrimary (citable) accession number: Q43216
Entry historyi
Integrated into UniProtKB/Swiss-Prot: June 13, 2006
Last sequence update: January 23, 2007
Last modified: February 17, 2016
This is version 79 of the entry and version 3 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programPlant Protein Annotation Program

Miscellaneousi

Miscellaneous

Phosphorylation of H2B was not detected.

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: H2BK6ac = acetylated Lys-7; H2BK33ac = acetylated Lys-26; H2BK143ub1 = monoubiquitinated Lys-132.Curated

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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 one 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.