Not CRISPR data: the image illustrates antibody quality for visualizing CRISPR experiment results.
Not CRISPR data: the image illustrates antibody quality for visualizing CRISPR experiment results.
OBFC1 CRISPR Activation Plasmid (h): sc-405050-ACT
- Target species: human
- 20 µg of transfection-ready, purified plasmid DNA; Suitable for up to 20 transfections
- OBFC1 CRISPR Activation Plasmid (h) is a synergistic activation mediator (SAM) transcription activation system designed to specifically upregulate gene expression
- OBFC1 CRISPR Activation Plasmid (h) consists of three plasmids at a 1:1:1 mass ratio: a plasmid encoding the deactivated Cas9 (dCas9) nuclease (D10A and N863A) fused to the transactivation domain VP64, and a blasticidin resistance gene; a plasmid encoding the MS2-p65-HSF1 fusion protein, and a hygromycin resistance gene; a plasmid encoding a target-specific 20 nt guide RNA fused to two MS2 RNA aptamers, and a puromycin resistance gene
- The resulting SAM complex binds to a site-specific region approximately 200-250 nt upstream of the transcriptional start site and provides robust recruitment of transcription factors for highly efficient gene activation
- gRNAs encoded by OBFC1 CRISPR Activation Plasmid (h) and OBFC1 CRISPR Activation Plasmid (h2) target distinct regulatory regions upstream of the STN1 transcriptional start site. One or both designs may be available
- Following transfection, gene knockout efficiency can be assayed by WB, IF or IHC using antibody: OBFC1 Antibody (E-10): sc-376450
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
OBFC1 CRISPR Activation Plasmid (h) | sc-405050-ACT | 20 µg | $397.00 |
STN1 encodes OBFC1, a core subunit of the CST (CTC1–STN1–TEN1) complex that binds single-stranded DNA and coordinates telomere end protection with genome-wide replication stress responses. OBFC1 supports telomere C-strand fill-in synthesis and promotes proper replication fork progression, helping prevent excessive single-stranded DNA accumulation and aberrant DNA damage signaling. Through interactions with DNA polymerase α/primase and crosstalk with ATR-dependent checkpoint pathways, OBFC1 contributes to replication restart and maintenance of chromosome stability. Dysregulation of CST components has been associated with telomere length defects, increased genome instability, and susceptibility to disorders featuring impaired DNA replication and telomere maintenance.
OBFC1 CRISPR Activation Plasmid (h) provides a targeted, non-destructive approach to upregulating endogenous STN1 expression without altering the underlying DNA sequence.
OBFC1 CRISPR Activation Plasmid (h) is a three-plasmid synergistic activation mediator (SAM) system engineered for highly efficient, site-specific transcriptional upregulation of the STN1 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 STN1 transcriptional start site, where VP64, p65, and HSF1 act in concert to recruit transcriptional machinery and drive upregulation of endogenous OBFC1 expression. Unlike nuclease-active Cas9, dCas9 does not introduce double-strand breaks or modify the genomic sequence, preserving the native STN1 locus and enabling the study of OBFC1-dependent transcriptional responses at the endogenous locus, making it a valuable tool for functional studies, target gene identification, and the modeling of OBFC1 pathway restoration in tumor cells with silenced or reduced STN1 expression.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.