
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
Histone H1X CRISPR Activation Plasmid (h) | sc-411232-ACT | 20 µg | $397.00 | |||
Histone H1X CRISPR Activation Plasmid (h2) | sc-411232-ACT-2 | 20 µg | $397.00 |
H1FX encodes histone H1X, a linker histone variant that binds nucleosomal DNA and contributes to higher-order chromatin compaction and genome organization. By modulating nucleosome spacing and chromatin accessibility, histone H1X influences transcriptional regulation, DNA replication timing, and DNA damage responses through chromatin remodeling pathways. Altered H1FX expression or histone H1 variant balance has been associated with epigenetic dysregulation that can impact cell-state transitions, proliferation programs, and genome stability. These features make H1FX a useful target for studying chromatin architecture, transcriptional networks, and disease-relevant epigenetic mechanisms in human cells.
Histone H1X CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous H1FX expression without altering the underlying DNA sequence.
Histone H1X CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the H1FX locus in human cell lines. The system is built around a catalytically inactive Cas9 (dCas9) carrying two inactivating mutations (D10A and N863A) that eliminate nuclease activity while preserving DNA binding. This dCas9 is fused to VP64, a potent transcriptional activator, and is co-expressed with a blasticidin resistance gene for selection. The second plasmid encodes the MS2-p65-HSF1 fusion protein, a secondary activator complex that works in concert with dCas9-VP64, alongside a hygromycin resistance gene. The third plasmid encodes a target-specific 20 nt sgRNA fused to two MS2 RNA aptamers that recruit the MS2-p65-HSF1 complex to the activation site, accompanied by a puromycin resistance gene. The three plasmids are delivered at a 1:1:1 mass ratio for balanced expression of all system components.
Once assembled at the target locus, the SAM complex binds within approximately 200 bp upstream of the H1FX transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous Histone H1X expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native H1FX locus and enabling the study of Histone H1X-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of Histone H1X pathway restoration in tumor cells with silenced or reduced H1FX expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.