
Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
cathepsin K Double Nickase Plasmid (h) | sc-400673-NIC | 20 µg | $410.00 | |||
cathepsin K Double Nickase Plasmid (h2) | sc-400673-NIC-2 | 20 µg | $410.00 |
CTSK encodes cathepsin K, a lysosomal cysteine protease with high collagenolytic and elastolytic activity that supports extracellular matrix turnover during osteoclast-mediated bone resorption. It participates in endolysosomal proteolysis and remodeling programs linked to osteoclast differentiation and signaling networks such as RANK/RANKL-driven pathways. Altered CTSK activity is associated with skeletal and connective tissue phenotypes, and dysregulated expression has been reported in tumor-associated stroma and inflammatory microenvironments where matrix degradation contributes to tissue remodeling. CTSK is therefore widely used as a functional marker and mechanistic node for studies of osteoclast biology, matrix dynamics, and protease-regulated signaling.
cathepsin K Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the CTSK locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within CTSK. 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 CTSK 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 CTSK-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.