



Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
CDKN1B/Kip1 p27 Double Nickase Plasmid (h) | sc-400074-NIC | 20 µg | $410.00 | |||
CDKN1B/Kip1 p27 Double Nickase Plasmid (h2) | sc-400074-NIC-2 | 20 µg | $410.00 |
CDKN1B encodes p27Kip1, a cyclin-dependent kinase inhibitor that restrains CDK2- and CDK4/6-driven progression through the G1/S checkpoint by modulating cyclin E/A–CDK2 and cyclin D–CDK4/6 complexes. p27 integrates mitogenic signaling and growth-inhibitory cues to control cell-cycle arrest, cellular quiescence, and differentiation, with regulation governed by phosphorylation-dependent subcellular localization and proteasomal turnover via SCF ubiquitin ligases. Altered CDKN1B expression or stability is frequently linked to dysregulated proliferation and aberrant checkpoint control, making it relevant to studies of oncogenic signaling, lineage commitment, and stress responses in human cells.
CDKN1B/Kip1 p27 Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the CDKN1B locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within CDKN1B. 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 CDKN1B 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 CDKN1B-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.