For research use only.

Catalog No.S6752

Y16 Chemical Structure

Molecular Weight(MW): 384.43

Y16 is an inhibitor of G-protein-coupled Rho GEFs. It blocks the binding of LARG, a DBL-family Rho guanine nucleotide exchange factor, with Rho (Kd = 80 nM).

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Biological Activity

Description Y16 is an inhibitor of G-protein-coupled Rho GEFs. It blocks the binding of LARG, a DBL-family Rho guanine nucleotide exchange factor, with Rho (Kd = 80 nM).
RhoGEFs [1]
In vitro

Y16 binds to the junction site of the DH-PH domains of LARG with a ∼80 nM Kd and suppresses LARG catalyzed RhoA activation dose dependently. It is active in blocking the interaction of LARG and related G-protein–coupled Rho GEFs with RhoA without a detectable effect on other DBL family Rho GEFs, Rho effectors, or a RhoGAP. In cells, Y16 selectively inhibits serum-induced RhoA activity and RhoA-mediated signaling, effects that can be rescued by a constitutively active RhoA or ROCK mutant. By suppressing RhoA activity, Y16 inhibits mammary sphere formation of MCF7 breast cancer cells but does not affect the nontransforming MCF10A cells. Y16 works synergistically with Rhosin/G04, a Rho GTPase activation site inhibitor, in inhibiting LARG–RhoA interaction, RhoA activation, and RhoA-mediated signaling functions. Y16 effectively inhibits the growth, migration, and invasion activities of breast cancer cells[1].


Cell Research:


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  • Cell lines: PC-3 cells
  • Concentrations: 10 μM
  • Incubation Time: 36 h
  • Method:

    PC-3 cells were quiesced in RPMI1640 containing 0.5% FBS for 24 hr. Cells were then trypsinized, resuspended in RPMI1640 containing 0.5% FBS, and counted. A total of 2.5 × 104 cells were loaded into the upper chamber. The lower chamber was filled with RPMI1640 supplemented with 10% FCS. A13 (10 μM), A2 (10 μM), Y16 (10 μM), or DMSO was added both in the upper and lower chambers. The concentration of DMSO in the medium was 0.1% for all experimental conditions. After a 36 hr incubation period, the cell suspension was aspirated, and the membranes were fixed in 70% ethanol at -20℃ for 20 min. Cells that had attached but not migrated were removed, the membranes were rinsed in water, and migrated cells on the underside of the membrane were visualized with staining in 2% crystal violet. Cells were counted on three independent transwell membranes using a light microscope.

    (Only for Reference)

Solubility (25°C)

In vitro DMSO 39 mg/mL (101.44 mM)
Water Insoluble
Ethanol Insoluble

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 384.43


CAS No. 429653-73-6
Storage powder
in solvent
Synonyms N/A
Smiles CC1=CC=CC(=C1)COC2=CC=CC(=C2)/C=C/3C(=O)NN(C3=O)C4=CC=CC=C4

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Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

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Rho Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID