CBX5-Polyclonal Antibodies

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CBX5

Qty


Total
$220
Catalog #
A0132
Antibody Type
Polyclonal Antibody
Gene ID
23468
Swiss Prot
P45973
Size
Species
Rabbit
Isotype
IgG
Purity
Affinity purification
Additional Information
ReactivityHuman
Tested applicationsWB
Recommended DilutionWB 1:500 - 1:1000
Calculated MW22kDa
Observed MWRefer to Figures
ImmunogenA synthetic peptide of human CBX5
Storage BufferStore at 4℃. Avoid freeze / thaw cycles. Buffer: PBS with 0.02% sodium azide, 50% glycerol, pH7.3.
Concentrationf
SynonymCBX5;HP1;HP1A
Images
  • A0132: image 1

    Western blot analysis of extracts of various cell lines, using CBX5 antibody.

Background

Heterochromatin protein 1 (HP1) is a family of heterochromatic adaptor molecules involved in both gene silencing and higher order chromatin structure (1). All three HP1 family members (α, β and γ) are primarily associated with centromeric heterochromatin; however, HP1β and γ also localize to euchromatic sites in the genome (2,3). HP1 proteins are approximately 25 kDa in size and each contains a conserved amino-terminal chromodomain, followed by a variable hinge region and a conserved carboxy-terminal chromoshadow domain. The chromodomain facilitates binding to histone H3 tri-methylated on Lys9, a histone "mark" closely associated with centromeric heterochromatin (4,5). The variable hinge region binds both RNA and DNA in a sequence-independent manner (6). The chromoshadow domain mediates the dimerization of HP1 proteins, in addition to binding multiple proteins implicated in gene silencing and heterochromatin formation, including the SUV39H histone methyltransferase, the DNMT1 and DNMT3a DNA methyltransferases and the p150 subunit of chromatin-assembly factor-1 (CAF1) (7-9). In addition to contributing to heterochromatin formation and propagation, HP1 and SUV39H are also found complexed with retinoblastoma (Rb) and E2F6 proteins, both of which function to repress euchromatic gene transcription in quiescent cells (10,11). HP1 proteins are subject to multiple types of post-translational modifications, including phosphorylation, acetylation, methylation, ubiquitination and sumoylation, suggesting multiple means of regulation (12-14).

Protocol

N/A

MSDS
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