Histone H2B - P02283 (H2B_DROME)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P02283: 5
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. (data source: UniProt  )
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. (data source: UniProt  )
Other Gene names: His2B His2B:CG17949 CG17949 His2B:CG33868 CG33868 His2B:CG33870 CG33870 His2B:CG33872 CG33872 His2B:CG33874 CG33874 His2B:CG33876 CG33876 His2B:CG33878 CG33878 His2B:CG33880 CG33880 His2B:CG33882 CG33882 His2B:CG33884 CG33884 His2B:CG33886 CG33886 His2B:CG33888 CG33888 His2B:CG33890 CG33890 His2B:CG33892 CG33892 His2B:CG33894 CG33894 His2B:CG33896 CG33896 His2B:CG33898 CG33898 His2B:CG33900 CG33900 His2B:CG33902 CG33902 His2B:CG33904 CG33904 His2B:CG33906 CG33906 His2B:CG33908 CG33908 His2B:CG33910 CG33910
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Data origin/color codes
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
Sequence Mismatches It is now possible to see information about expression tags, cloning artifacts, and many other details related to sequence mismatches.
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Validation Track

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Data in red indicates combined ranges of Homology Models from SBKB   and the Protein Model Portal  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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