A2WKT1 (H2B6_ORYSI) Reviewed, UniProtKB/Swiss-Prot

Names and origin

Protein names

Recommended name:
Histone H2B.6

Gene names

Name:	H2B.6
ORF Names:	OsI_000424

Organism

Oryza sativa subsp. indica (Rice)

Taxonomic identifier

39946 [NCBI]

Taxonomic lineage

cellular organisms › Eukaryota › Viridiplantae › Streptophyta › Streptophytina › Embryophyta › Tracheophyta › Euphyllophyta › Spermatophyta › Magnoliophyta › Liliopsida › commelinids › Poales › Poaceae › BEP clade › Ehrhartoideae › Oryzeae › Oryza › Oryza sativa

Protein attributes

Sequence length	153 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is further processed into a mature form.
Protein existence	Inferred from homology

General annotation (Comments)

Function	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.
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.
Subcellular location	Nucleus By similarity. Chromosome By similarity.
Post-translational modification	Can be acetylated to form H2BK6ac and H2BK33ac By similarity. Monoubiquitinated by BRE1 to form H2BK143ub1 and deubiquitinated by UBP26. Required for heterochromatic histone H3 di- and trimethylation at H3K4me. May give a specific tag for epigenetic transcriptional activation By similarity.
Sequence similarities	Belongs to the histone H2B family.
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-37; H2BK143ub1 = monoubiquitinated Lys-149.

Ontologies

Keywords
Cellular component	Chromosome Nucleosome core Nucleus
Ligand	DNA-binding
PTM	Acetylation Isopeptide bond Ubl conjugation
Gene Ontology (GO)
Biological_process	nucleosome assembly Inferred from electronic annotation. Source: InterPro
Cellular_component	chloroplast Inferred from electronic annotation. Source: EnsemblPlants/Gramene nucleolus Inferred from electronic annotation. Source: EnsemblPlants/Gramene nucleosome Inferred from electronic annotation. Source: UniProtKB-KW
Molecular_function	DNA binding Inferred from electronic annotation. Source: UniProtKB-KW
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view	Feature identifier
Molecule processing
	Initiator methionine	1	1	Removed By similarity
	Chain	2 – 153	152	Histone H2B.6		PRO_0000294186
Amino acid modifications
	Modified residue	7	1	N6-acetyllysine By similarity
	Modified residue	37	1	N6-acetyllysine By similarity
	Cross-link	149		Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin) By similarity

Sequences

	Sequence		Length	Mass (Da)
	A2WKT1 [UniParc]. Last modified March 20, 2007. Version 1. Checksum: C61F8B27DE3D0C4F	FASTA	153	16,474
	10 20 30 40 50 60 MAPKAEKKPA AKKPAEEEPA AEKAEKAPAG KKPKAEKRLP AGKGEKGSGE GKKAGRKKGK 70 80 90 100 110 120 KSVETYKIYI FKVLKQVHPD IGISSKAMSI MNSFINDIFE KLAGESAKLA RYNKKPTITS 130 140 150 REIQTAVRLV LPGELAKHAV SEGTKAVTKF TSS

References

[1]

"The genomes of Oryza sativa: a history of duplications." Yu J., Wang J., Lin W., Li S., Li H., Zhou J., Ni P., Dong W., Hu S., Zeng C., Zhang J., Zhang Y., Li R., Xu Z., Li S., Li X., Zheng H., Cong L. , Lin L., Yin J., Geng J., Li G., Shi J., Liu J., Lv H., Li J., Wang J., Deng Y., Ran L., Shi X., Wang X., Wu Q., Li C., Ren X., Wang J., Wang X., Li D., Liu D., Zhang X., Ji Z., Zhao W., Sun Y., Zhang Z., Bao J., Han Y., Dong L., Ji J., Chen P., Wu S., Liu J., Xiao Y., Bu D., Tan J., Yang L., Ye C., Zhang J., Xu J., Zhou Y., Yu Y., Zhang B., Zhuang S., Wei H., Liu B., Lei M., Yu H., Li Y., Xu H., Wei S., He X., Fang L., Zhang Z., Zhang Y., Huang X., Su Z., Tong W., Li J., Tong Z., Li S., Ye J., Wang L., Fang L., Lei T., Chen C.-S., Chen H.-C., Xu Z., Li H., Huang H., Zhang F., Xu H., Li N., Zhao C., Li S., Dong L., Huang Y., Li L., Xi Y., Qi Q., Li W., Zhang B., Hu W., Zhang Y., Tian X., Jiao Y., Liang X., Jin J., Gao L., Zheng W., Hao B., Liu S.-M., Wang W., Yuan L., Cao M., McDermott J., Samudrala R., Wang J., Wong G.K.-S., Yang H. PLoS Biol. 3:266-281(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: cv. 93-11.

Cross-references

Sequence databases
EMBL GenBank DDBJ	CM000126 Genomic DNA. Translation: EAY72577.1.
3D structure databases
ProteinModelPortal	A2WKT1.
SMR	A2WKT1. Positions 64-153.
ModBase	Search...
Protocols and materials databases
StructuralBiologyKnowledgebase	Search...
Organism-specific databases
Gramene	A2WKT1.
Family and domain databases
Gene3D	1.10.20.10. 1 hit.
InterPro	IPR009072. Histone-fold. IPR007125. Histone_core_D. IPR000558. Histone_H2B. [Graphical view]
PANTHER	PTHR23428. PTHR23428. 1 hit.
Pfam	PF00125. Histone. 1 hit. [Graphical view]
PRINTS	PR00621. HISTONEH2B.
SMART	SM00427. H2B. 1 hit. [Graphical view]
SUPFAM	SSF47113. Histone-fold. 1 hit.
PROSITE	PS00357. HISTONE_H2B. 1 hit. [Graphical view]
ProtoNet	Search...

Entry information

Entry name

H2B6_ORYSI

Accession

Primary (citable) accession number: A2WKT1

Entry history

Integrated into UniProtKB/Swiss-Prot:	July 10, 2007
Last sequence update:	March 20, 2007
Last modified:	March 6, 2013
This is version 30 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation program

Plant Protein Annotation Program