



Ordering Information
| Product Name | Catalog # | UNIT | Price | Qty | FAVORITES | |
MAP-1B Double Nickase Plasmid (h) | sc-400981-NIC | 20 µg | $410.00 | |||
MAP-1B Double Nickase Plasmid (h2) | sc-400981-NIC-2 | 20 µg | $410.00 |
MAP1B encodes microtubule-associated protein 1B (MAP-1B), a high–molecular weight cytoskeletal regulator that binds microtubules and contributes to their stabilization and organization. MAP-1B is strongly linked to neuronal development, supporting axon outgrowth, growth cone dynamics, and neurite extension through coordinated control of microtubule–actin interactions and cytoskeletal remodeling. Its activity intersects with processes such as intracellular transport, neuronal polarity, and synaptic maturation, and is modulated by phosphorylation-dependent signaling networks during differentiation. Dysregulation of MAP1B expression or function has been associated with neurodevelopmental and neurodegenerative phenotypes, making it relevant for mechanistic studies of neuronal connectivity and cytoskeletal pathology.
MAP-1B Double Nickase Plasmid (h) consists of a matched pair of plasmids engineered for high-specificity editing of the MAP1B locus in human cell lines. Each plasmid expresses a Cas9 D10A nickase and a distinct sgRNA targeting opposite DNA strands within MAP1B. 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 MAP1B 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 MAP1B-disrupted clones.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.