H2B_PATGR
ID H2B_PATGR Reviewed; 122 AA.
AC P02284;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 03-AUG-2022, entry version 93.
DE RecName: Full=Histone H2B, gonadal;
OS Patella granatina (Sandpaper limpet).
OC Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Mollusca; Gastropoda;
OC Patellogastropoda; Patelloidea; Patellidae; Cymbula.
OX NCBI_TaxID=87972;
RN [1]
RP PROTEIN SEQUENCE OF 2-122.
RX PubMed=436833; DOI=10.1111/j.1432-1033.1979.tb12796.x;
RA van Helden P., Strickland W.N., Brandt W.F., von Holt C.;
RT "The complete amino-acid sequence of histone H2B from the mollusc Patella
RT granatina.";
RL Eur. J. Biochem. 93:71-78(1979).
CC -!- FUNCTION: Core component of nucleosome. Nucleosomes wrap and compact
CC DNA into chromatin, limiting DNA accessibility to the cellular
CC machineries which require DNA as a template. Histones thereby play a
CC central role in transcription regulation, DNA repair, DNA replication
CC and chromosomal stability. DNA accessibility is regulated via a complex
CC set of post-translational modifications of histones, also called
CC histone code, and nucleosome remodeling.
CC -!- SUBUNIT: The nucleosome is a histone octamer containing two molecules
CC each of H2A, H2B, H3 and H4 assembled in one H3-H4 heterotetramer and
CC two H2A-H2B heterodimers. The octamer wraps approximately 147 bp of
CC DNA.
CC -!- SUBCELLULAR LOCATION: Nucleus. Chromosome.
CC -!- PTM: Monoubiquitination of Lys-117 gives a specific tag for epigenetic
CC transcriptional activation and is also prerequisite for histone H3
CC 'Lys-4' and 'Lys-79' methylation. {ECO:0000250}.
CC -!- PTM: GlcNAcylation at Ser-109 promotes monoubiquitination of Lys-117.
CC It fluctuates in response to extracellular glucose, and associates with
CC transcribed genes (By similarity). {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the histone H2B family. {ECO:0000305}.
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DR PIR; A02611; HSKP22.
DR AlphaFoldDB; P02284; -.
DR SMR; P02284; -.
DR GO; GO:0000786; C:nucleosome; IEA:UniProtKB-KW.
DR GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR GO; GO:0046982; F:protein heterodimerization activity; IEA:InterPro.
DR GO; GO:0044877; F:protein-containing complex binding; ISS:UniProtKB.
DR GO; GO:0030527; F:structural constituent of chromatin; IEA:InterPro.
DR Gene3D; 1.10.20.10; -; 1.
DR InterPro; IPR009072; Histone-fold.
DR InterPro; IPR007125; Histone_H2A/H2B/H3.
DR InterPro; IPR000558; Histone_H2B.
DR PANTHER; PTHR23428; PTHR23428; 1.
DR Pfam; PF00125; Histone; 1.
DR PRINTS; PR00621; HISTONEH2B.
DR SMART; SM00427; H2B; 1.
DR SUPFAM; SSF47113; SSF47113; 1.
DR PROSITE; PS00357; HISTONE_H2B; 1.
PE 1: Evidence at protein level;
KW Chromosome; Direct protein sequencing; DNA-binding; Glycoprotein;
KW Isopeptide bond; Nucleosome core; Nucleus; Ubl conjugation.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000269|PubMed:436833"
FT CHAIN 2..122
FT /note="Histone H2B, gonadal"
FT /id="PRO_0000071877"
FT REGION 1..31
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 10..31
FT /note="Basic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT CARBOHYD 109
FT /note="O-linked (GlcNAc) serine"
FT /evidence="ECO:0000250"
FT CROSSLNK 117
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in ubiquitin)"
FT /evidence="ECO:0000250"
SQ SEQUENCE 122 AA; 13525 MW; DA00007E2D2937B8 CRC64;
MPPKVSSKGA KKAGKAKAAR SGDKKRKRRR KESYSIYIYK VLKQVHPDTG VSSKAMSIMN
SFVNDIFERI AAEASRLAHY NKRSTITSRE IQTAVRLLLP GELAKHAVSE GTKAVTKYTS
SK