Ataxin-7 Double Nickase Plasmid (h): sc-408149-NIC
- Target species: human
- 20 µg of transfection-ready, purified plasmid DNA; Suitable for up to 20 transfections
- Ataxin-7 Double Nickase Plasmid (h) consists of a pair of plasmids each encoding a D10A mutated Cas9 nuclease and a target-specific 20 nt guide RNA (gRNA) designed to knockout gene expression with greater specificity than its CRISPR/Cas9 KO counterpart
- Paired gRNA sequences are offset by approximately 20 bp to allow for specific Cas9-mediated double nicking of the genomic DNA, which mimics a DSB
- One plasmid in the pair contains a puromycin-resistance gene for selection; the other plasmid in the pair contains a GFP marker to visually confirm transfection
- Ataxin-7 Double Nickase Plasmid (h) and Ataxin-7 Double Nickase Plasmid (h2) encode distinct paired gRNA designs targeting ATXN7. One or both designs may be available
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
Ataxin-7 Double Nickase Plasmid (h) | sc-408149-NIC | 20 µg | $410.00 | |||
Ataxin-7 Double Nickase Plasmid (h2) | sc-408149-NIC-2 | 20 µg | $410.00 |
ATXN7 encodes ataxin-7, a nuclear protein that functions as an integral component of the SAGA (STAGA) transcriptional coactivator complex, linking chromatin remodeling to histone acetylation and deubiquitination. Through these activities, ataxin-7 helps regulate RNA polymerase II–dependent transcription, promoter accessibility, and gene expression programs important for neuronal and retinal homeostasis. Polyglutamine expansion in ATXN7 perturbs SAGA integrity and transcriptional regulation, and is associated with spinocerebellar ataxia type 7 (SCA7), a neurodegenerative disorder with prominent retinal involvement. Experimental modulation of ATXN7 supports studies of chromatin-mediated transcription, proteostasis, and stress-responsive gene networks in human cell models.
Ataxin-7 Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the ATXN7 locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within ATXN7. When directed to adjacent sites on opposite DNA strands, the two nickases generate offset single-strand nicks that together produce a staggered double-strand break, requiring coordinated on-target activity from both guides. The resulting DNA break is resolved by endogenous cellular repair pathways, most commonly through non-homologous end joining (NHEJ), leading to insertions or deletions that disrupt ATXN7 function. By requiring dual sgRNA engagement at the target locus, the double nicking approach enhances editing specificity and provides a complementary CRISPR strategy for applications where additional control over targeting precision is desired.
To support efficient identification of edited cells, one plasmid encodes GFP for fluorescent visualization of transfected populations, while the companion plasmid carries a puromycin resistance gene for antibiotic selection. Together, these features support efficient enrichment of co-transfected populations and simplify the validation of ATXN7-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.