SRP0408
Histone Octamer full length human
recombinant, expressed in E. coli, ≥90% (SDS-PAGE)
Synonym(s):
Histone Octamer
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About This Item
UNSPSC Code:
12352200
NACRES:
NA.32
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biological source
human
recombinant
expressed in E. coli
Assay
≥90% (SDS-PAGE)
form
aqueous solution
mol wt
113.8 kDa
packaging
pkg of 100 μg
technique(s)
cell based assay: suitable
solubility
water: soluble
shipped in
dry ice
storage temp.
−70°C
Gene Information
human ... HIST1H2BG(8339) , HIST2H2AC(8338) , HIST3H3(8290) , HIST4H4(121504)
General description
Human recombinant histone octamer consisting of 2 molecules each of histones H2A (GenBank Accession No. NM_033445) amino acids 2-130(end) with a N-terminal His-tag, H2B (GenBank Accession No. NM_003528) amino acids 2-126(end) with a N-terminal His-tag, H3 (GenBank Accession No. NM_003532) amino acids 2-137(end) with a N-terminal His-tag, and H4 (GenBank Accession No. NM_003548) amino acids 2-103(end) with a N-terminal His-tag, expressed in an E. coli expression system.
Biochem/physiol Actions
The nuclear DNA in eukaryotes is found to be associated with histones to form a compact complex called nucleosome. Histones neutralize the electrostatic nature of DNA and function as scaffolding proteins. Each core nucleosome contains two copies each of the core histones H2A, H2B, H3, and H4 to form an octameric complex. This octameric complex contains a central (H3-H4)2 tetramer flanked on both sides with H2A-H2B dimers. The octamer complex function in various stages of chromosome function, chromatin assembly and nucleosome formation. The histone dimer-tetramer interactions are also important in RNA transcription.
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Kyle M Miller et al.
Biochemical Society transactions, 40(2), 370-376 (2012-03-23)
Inherited or acquired defects in detecting, signalling or repairing DNA damage are associated with various human pathologies, including immunodeficiencies, neurodegenerative diseases and various forms of cancer. Nuclear DNA is packaged into chromatin and therefore the true in vivo substrate of
Vishal V Raut et al.
Annals of botany, 108(7), 1235-1246 (2011-09-08)
In eukaryotes, chromatin remodelling complexes are shown to be responsible for nucleosome mobility, leading to increased accessibility of DNA for DNA binding proteins. Although the existence of such complexes in plants has been surmised mainly at the genetic level from
The nucleosomal core histone octamer at 3.1 A resolution: a tripartite protein assembly and a left-handed superhelix.
Arents G
Proceedings of the National Academy of Sciences of the USA, 88, 10148-10152 (1991)
Histone octamer function in vivo: mutations in the dimer-tetramer interfaces disrupt both gene activation and repression.
Santisteban MS
The Embo Journal, 16, 2493-2506 (1997)
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