Revision 1

#47412Store at -20C

5 mg

Cell Signaling Technology

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For Research Use Only. Not for Use in Diagnostic Procedures.

Background

UNC-2170 Hydrochloride is a small-molecule inhibitor of p53-binding protein 1 (53BP1), a protein involved in DNA damage response. By screening a set of methyl-lysine binding proteins, UNC-2170 was identified as a fragment-like ligand that preferentially binds 53BP1 (1). 53BP1 is a methyl-lysine binding protein recruited to double-strand DNA breaks, playing a central role in DNA damage repair by promoting non-homologous end joining (NHEJ) repair (2). The 53BP1 protein contains a tandem tudor domain responsible for the recognition and binding of methylated lysine residues on histone proteins. Because UNC-2170 binds the same 53BP1 domain recognized by histones (Kd = 22 ± 2.5 µM), UNC-2170 competes for histone binding and functions as a 53BP1 antagonist in cellular lysates (1). UNC-2170 is only a modestly potent inhibitor of 53BP1 protein function; UNC-2170 analogs and other compounds that bind and inhibit 53BP1 are under development (3).

  1. Perfetti, M.T. et al. (2015) ACS Chem Biol 10, 1072-81.
  2. Mochan, T.A. et al. (2004) DNA Repair (Amst) 3, 945-52.
  3. Sun, Y. et al. (2021) Bioorg Med Chem 34, 116054.

Molecular Formula

C14H21BrN2O • HCl

Molecular Weight

349.7 g/mol

Purity

>98%

CAS

1648707-58-7

Solubility

Soluble in DMSO at 40 mg/mL or water at 50 mg/mL.

Storage

Store lyophilized at -20ºC, desiccated. In lyophilized form, the chemical is stable for 24 months. Once in solution, store at -20ºC and use within 3 months to prevent loss of potency. Aliquot to avoid multiple freeze/thaw cycles.

Directions for Use

UNC-2170 Hydrochloride is supplied as a lyophilized powder. For a 15 mM stock, reconstitute 5 mg of powder in 0.95 mL of DMSO. Working concentrations and length of treatment can vary depending on the desired effect.

Background References

    Cross-Reactivity Key

    H: human M: mouse R: rat Hm: hamster Mk: monkey Vir: virus Mi: mink C: chicken Dm: D. melanogaster X: Xenopus Z: zebrafish B: bovine Dg: dog Pg: pig Sc: S. cerevisiae Ce: C. elegans Hr: horse GP: Guinea Pig Rab: rabbit All: all species expected

    Trademarks and Patents

    Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
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