PYR-41

Catalog No.S7129 Batch:S712903

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Technical Data

Formula

C17H13N3O7
Molecular Weight 371.3 CAS No. 418805-02-4
Solubility (25°C)* In vitro DMSO 74 mg/mL (199.29 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
2%DMSO 30%PEG300 5%Tween80 63%ddH2O
2.0mg/ml Taking the 1 mL working solution as an example, add 20 μL of 100 mg/ml clarified DMSO stock solution to 300 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify it; then continue to add 630 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or 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.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description PYR-41 is the first cell-permeable inhibitor of ubiquitin-activating enzyme E1, with no activity at E2. PYR-41 induce apoptosis.
Targets
Ubiquitin-activating Enzyme E1 [1]
(Cell-free assay)
<10 μM
In vitro PYR-41 (50 μM) inhibits activity of ubiquitin-activating enzyme E1 by over 90%. PYR-41 could be a target for nucleophilic attack and potentially reacts with the active site cysteine of E1. PYR-41 efficiently blocks cyclin E degradation. PYR-41 decreases the level of E1fUb thioesters in cells with a IC50 of between 10 and 25 μM, and prevents proteasome inhibitor–induced accumulation of ubiquitylated proteins. PYR-41 increases total sumoylation in cells and in cell harboring temperature-sensitive E1. PYR-41 is able to inhibit both proteasome-dependent and proteasome-independent activities of ubiquitylation. PYR-41 (50 μM) attenuates 1 ng/mL IL-1α-mediated nuclear factor-κB activation by >60% through preventing the downstream ubiquitylation and proteasomal degradation of IκBα. PYR-41 inhibits degradation of p53 and activates the transcriptional activity of p53, which enable its differentially killing transformed p53-expressing cells. [1] PYR-41 blocks ubiquitination reactions but paradoxically leads to the accumulation of high MW ubiquitinated proteins. PYR-41 also has equal or greater inhibitory activity against several deubiquitinases (DUBs) in intact cells and purified USP5 in vitro. PYR-41 also mediates cross-linking of specific protein kinases (Bcr-Abl, Jak2) to inhibit their signaling activity. [1]

Protocol (from reference)

Customer Product Validation

Data from [Data independently produced by , , Nanoscale, 2016, 8: 18740-18750]

Data from [Data independently produced by , , Neoplasia, 2017, 19(4):346-353]

Data from [Data independently produced by , , J Virol, 2017, 91(5)]

Data from [Data independently produced by , , J Immunol Res, 2018, 2018:5070573]

Selleck's PYR-41 has been cited by 33 publications

Engineered a dual-targeting HA-TPP/A nanoparticle for combination therapy against KRAS-TP53 co-mutation in gastrointestinal cancers [ Bioact Mater, 2024, 32:277-291] PubMed: 37876556
ER Stress-Activated HSF1 Governs Cancer Cell Resistance to USP7 Inhibitor-Based Chemotherapy through the PERK Pathway [ Int J Mol Sci, 2024, 25(5)2768] PubMed: 38474017
IE1 of Human Cytomegalovirus Inhibits Necroptotic Cell Death via Direct and Indirect Modulation of the Necrosome Complex [ Viruses, 2024, 16(2)290] PubMed: 38400065
Precise pancreatic cancer therapy through targeted degradation of mutant p53 protein by cerium oxide nanoparticles [ J Nanobiotechnology, 2023, 21(1):117] PubMed: 37005668
The Ubiquitin-Proteasome System Facilitates Membrane Fusion and Uncoating during Coronavirus Entry [ Viruses, 2023, 15(10)2001] PubMed: 37896778
The Ubiquitin-Proteasome System Facilitates Membrane Fusion and Uncoating during Coronavirus Entry [ Viruses, 2023, 15(10)2001] PubMed: 37896778
Proteasomal and autophagy-mediated degradation of mutp53 proteins through mitochondria-targeting aggregation-induced-emission materials [ Acta Biomater, 2022, S1742-7061(22)00458-5] PubMed: 35931280
Small Molecules Promote Selective Denaturation and Degradation of Tubulin Heterodimers through a Low-Barrier Hydrogen Bond [ J Med Chem, 2022, 65(13):9159-9173] PubMed: 35762925
TRIP13 modulates protein deubiquitination and accelerates tumor development and progression of B-cell malignancies [ J Clin Invest, 2021, 146893] PubMed: 34061780
Glutathionylation-dependent proteasomal degradation of wide-spectrum mutant p53 proteins by engineered zeolitic imidazolate framework-8 [ Biomaterials, 2021, 271:120720] PubMed: 33639563

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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