p21 (CDKN1A) – Research-Grade Recombinant Regulatory Protein
p21 is a single-chain regulatory protein encoded by the CDKN1A gene and functions as a cyclin-dependent kinase interaction partner within cell cycle signaling models. This full-length 164–amino acid construct is structurally distinct from short peptide fragments and represents a multi-domain protein system suitable for controlled laboratory study.
In research environments, recombinant p21 is utilized as a reference material for investigating protein–protein interaction dynamics, regulatory domain mapping, and structure–function relationships associated with cell cycle control pathways. Its defined amino acid sequence supports reproducible analytical characterization under in vitro conditions.
Unlike discrete synthetic peptides, p21 exhibits higher-order protein folding and domain-level interaction behavior. This material is intended strictly for laboratory research use only and is not designed for human or veterinary application.
Related research compounds
Semax · Selank · Semax + Selank Blend · Adamax · DSIP · PE-22-28
Documentation and methods
Analytical testing · How to read a COA · Batch COAs · Storage and handling · What are research peptides
Important Information About This Research Product
- 1 Your vials are not empty. The lyophilized material may collect at the bottom of the vial and can appear minimal prior to inspection.
- 2 All products are supplied as lyophilized (freeze-dried) powder and require reconstitution. Bacteriostatic water is not supplied.
- 3 Store in a dry, cool, and dark environment away from UV exposure. For optimal preservation, storage at approximately 4°C is recommended.
- 4 This material is strictly for laboratory and research use only. No instructions regarding reconstitution, dosing, or administration can be provided.
