Revision 1

#13624Store at -20C

1 mg

Cell Signaling Technology

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

Background

Y-27632 is a potent and selective ATP-competitive inhibitor of Rho-associated kinases (ROCK), with Ki values of 0.22 µM and 0.30 µM for ROCK1 and ROCK2, respectively. In vitro kinase assays demonstrate that Y-27632 exhibits a 20-fold greater preference for ROCK when compared to citron kinase and protein kinase N (1). Research studies show that Y-27632 treatment of cells leads to inhibition of ROCK phosphorylation of myosin phosphatase subunit 1 (MYPT1) at both Thr853 and Thr696, with a much greater inhibition of Thr853 phosphorylation (2,3). Y-27632 selectively inhibits smooth-muscle contraction by inhibiting Ca2+ sensitization (4). Additional research indicates that Y-27632 inhibits dissociation-induced apoptosis of cultured human embryonic stem cells over numerous passages and increases cloning efficiency (5).

  1. Ishizaki, T. et al. (2000) Mol Pharmacol 57, 976-83.
  2. Garton, A.J. et al. (2008) Methods Enzymol 439, 491-500.
  3. Ramachandran, C. et al. (2011) Mol Vis 17, 1877-90.
  4. Uehata, M. et al. (1997) Nature 389, 990-4.
  5. Watanabe, K. et al. (2007) Nat Biotechnol 25, 681-6.

Molecular Formula

C14H21N3O · 2HCl

Molecular Weight

320.3 g/mol

Purity

>98%

CAS

129830-38-2

Solubility

Soluble in DMSO at 20mg/ml and H2O at 14mg/ml.

Storage

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

Directions for Use

Y-27632 is supplied as a lyophilized powder. For a 10 mM stock, reconstitute the 1 mg in 312.2 µl DMSO. Working concentrations and length of treatment can vary depending on the desired effect, but it is typically used at 1-10 µM for 15 min-4 hr.

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.
    All other trademarks are the property of their respective owners. Visit cellsignal.com/trademarks for more information.

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    Revision 1
    #13624

    Y-27632

    Y-27632: Image 1 Expand Image
    使用 Phospho-MYPT1 (Thr853) Antibody #4563(上图)和 MYPT1 Antibody #2634(下图),对未经处理 (-) 或已经 Y-27632(10 μM,1 小时;+)处理的 C2C12、293 和 NIH/3T3 细胞的提取物进行蛋白质印迹分析。
    Y-27632: Image 2 Expand Image
    Y-27632 的化学结构。