SAMHD1 Double Nickase Plasmid (h): sc-406002-NIC
- Target species: human
- 20 µg of transfection-ready, purified plasmid DNA; Suitable for up to 20 transfections
- SAMHD1 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
- SAMHD1 Double Nickase Plasmid (h) and SAMHD1 Double Nickase Plasmid (h2) encode distinct paired gRNA designs targeting SAMHD1. One or both designs may be available
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
SAMHD1 Double Nickase Plasmid (h) | sc-406002-NIC | 20 µg | $410.00 | |||
SAMHD1 Double Nickase Plasmid (h2) | sc-406002-NIC-2 | 20 µg | $410.00 |
SAMHD1 encodes a sterile alpha motif and HD-domain–containing dNTP triphosphohydrolase that regulates intracellular deoxynucleotide pools and helps maintain genome stability during DNA replication and repair. By controlling dNTP availability and participating in DNA damage response signaling, SAMHD1 influences cell-cycle progression, replication stress tolerance, and innate immune pathways linked to nucleic acid sensing. SAMHD1 is also implicated in host restriction of retroelements and viral replication through modulation of nucleotide metabolism and nucleic acid–triggered immune signaling. Dysregulated SAMHD1 activity has been associated with inflammatory interferonopathies and has been studied in cancer contexts where altered dNTP homeostasis and replication stress contribute to genomic instability.
SAMHD1 Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the SAMHD1 locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within SAMHD1. 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 SAMHD1 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 SAMHD1-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.