NameHistone H2A-Bbd type 1
Synonyms
  • H2A Barr body-deficient
  • H2A.B
  • H2A.Bbd
Gene NameH2AFB1
OrganismHuman
Amino acid sequence
>lcl|BSEQ0017634|Histone H2A-Bbd type 1
MPRRRRRRGSSGAGGRGRTCSRTVRAELSFSVSQVERSLREGHYAQRLSRTAPVYLAAVI
EYLTAKVPELAGNEAQNSGERNITPLLLDMVVHNDRLLSTLFNTTTISQVAPGED
Number of residues115
Molecular Weight12697.21
Theoretical pINot Available
GO Classification
Functions
  • DNA binding
  • protein heterodimerization activity
Processes
  • mRNA processing
  • chromatin silencing
  • nucleosome assembly
Components
  • nucleus
  • nuclear nucleosome
  • transcriptionally active chromatin
General FunctionAtypical histone H2A which can replace conventional H2A in some nucleosomes and is associated with active transcription and mRNA processing (PubMed:22795134). 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 (PubMed:15257289, PubMed:16287874, PubMed:16957777, PubMed:17591702, PubMed:17726088, PubMed:18329190, PubMed:22795134). Nucleosomes containing this histone are less rigid and organize less DNA than canonical nucleosomes in vivo (PubMed:15257289, PubMed:16957777, PubMed:17591702, PubMed:24336483). They are enriched in actively transcribed genes and associate with the elongating form of RNA polymerase (PubMed:17591702, PubMed:24753410). They associate with spliceosome components and are required for mRNA splicing (PubMed:22795134).
Specific FunctionDna binding
Pfam Domain FunctionNot Available
Transmembrane RegionsNot Available
GenBank Protein IDNot Available
UniProtKB IDP0C5Y9
UniProtKB Entry NameH2AB1_HUMAN
Cellular LocationNucleus
Gene sequence
>lcl|BSEQ0017635|Histone H2A-Bbd type 1 (H2AFB1)
ATGCCGAGGAGGAGGAGACGCCGAGGGTCCTCCGGTGCTGGCGGCCGGGGGCGGACCTGC
TCTCGCACCGTCCGAGCGGAGCTTTCGTTTTCAGTGAGCCAGGTGGAGCGCAGTCTACGG
GAGGGCCACTACGCTCAGCGCCTGAGTCGCACGGCGCCGGTCTACCTCGCTGCGGTTATT
GAGTACCTGACGGCCAAGGTCCCGGAGCTGGCGGGCAACGAGGCCCAGAACAGCGGAGAG
CGGAACATCACTCCCCTGCTGCTGGACATGGTGGTTCACAACGACAGGCTACTGAGCACC
CTTTTCAACACGACCACCATCTCTCAAGTGGCCCCTGGCGAGGACTAG
GenBank Gene IDNot Available
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:22516
Chromosome LocationX
LocusXq28
References
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