Key features and details
- Detection method: Colorimetric
- Sample type: Cell Lysate, Tissue Lysate
- Sensitivity: 0.2 ng
Product nameROCK Activity Assay Kit
Sample typeCell Lysate, Tissue Lysate
Species reactivityReacts with: Human
ROCK Activity Assay Kit (ab211175) provides a non-isotopic, sensitive and specific method to monitor ROCK1 (ROKβ) and ROCK2 (Rho Kinase) using its physiological substrate MYPT1 (myosin phosphate target subunit 1). This kit can also be used in the screening of Rho kinase inhibitor molecules in purified protein samples.
This product detects the specific phosphorylation of MYPT1 by ROCK1 and ROCK2 at threonine 696 (T696) using an enzyme-based immunoassay. This substrate is initially incubated with the sample containing ROCK1 and ROCK2 (such as purified kinase or cell lysate). Following the kinase reaction, the sample solution is transferred to a substrate capture plate where phosphorylated MYPT1 is detected by anti-phopsho-MYPT1-Thr696 antibody. A recombinant active ROCK2 is provided as a positive control. The sensitivity limit of this kit is 200 pg of active ROCK2.
Members of the Rho family are essential regulatory components of the signaling pathway that direct cell motility, adhesion, and cytokinesis through reorganization of actin cytoskeleton. Rho is activated by extracellular signals such as lysophosphatidic acid (LPA). The actions of Rho are mediated by downstream Rho effectors. One of these effectors is Rho-associated kinase (ROCK). Two ROCK isoforms have been identified: ROCK1 (also known as ROKβ) and ROCK2 (also known as Rho Kinase and ROKα). ROCK mediates Rho signaling and reorganizes actin cytoskeleton through phosphorylation of several substrates that contribute to the assembly of actin filaments and contractility. For example, ROCK inactivates myosin phosphatase through the specific phosphorylation of myosin phosphatase target subunit 1 (MYPT1) at Thr696, which results in an increase in the phosphorylated content of the 20-kDa myosin light chain (MLC20).
Storage instructionsPlease refer to protocols.
Components 1 x 96 tests 5 x 96 tests 10X Kinase Buffer 1 x 20ml 5 x 20ml 10X Wash Buffer 1 x 100ml 5 x 100ml Active ROCK-II (0.5 µg/mL) 1 x 20µl 5 x 20µl Anti-Phospho-MYPT1 (Thr696) antibody 1 x 20µl 5 x 20µl Assay Diluent 1 x 50ml 5 x 50ml ATP Solution (100 mM) 1 x 100µl 5 x 100µl Rho Kinase Substrate Coated Plate 1 x 96 tests 5 x 96 tests Secondary Antibody, HRP Conjugate 1 x 20µl 5 x 20µl Stop Solution 1 x 12ml 5 x 12ml Substrate Solution 1 x 12ml 5 x 12ml
Cellular localizationROCK2: Cytoplasm. Cell membrane. Cytoplasmic, and associated with actin microfilaments and the plasma membrane. ROCK1: Cytoplasm. Cytoplasm, cytoskeleton, microtubule organizing center, centrosome, centriole. Golgi apparatus membrane. Cell projection, bleb. Cytoplasm, cytoskeleton. Cell membrane. Cell projection, lamellipodium. Cell projection, ruffle. Associated with the mother centriole and an intercentriolar linker. Colocalizes with ITGB1BP1 and ITGB1 at the cell membrane predominantly in lamellipodia and membrane ruffles, but also in retraction fibers. Localizes at the cell membrane in an ITGB1BP1-dependent manner (By similarity). A small proportion is associated with Golgi membranes.
ab211175 has been referenced in 1 publication.
- Yang J et al. Ripasudil Attenuates Lipopolysaccharide (LPS)-Mediated Apoptosis and Inflammation in Pulmonary Microvascular Endothelial Cells via ROCK2/eNOS Signaling. Med Sci Monit 24:3212-3219 (2018). PubMed: 29766980