2. Epigenetics
  3. Histone Acetyltransferase Epigenetic Reader Domain
  4. EML 425

EML425 is a potent and selective CREB binding protein (CBP)/p300 inhibitor with IC50s of 2.9 and 1.1 μM, respectively.

For research use only. We do not sell to patients.

EML 425 Chemical Structure

EML 425 Chemical Structure

CAS No. : 1675821-32-5

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10 mM * 1 mL in DMSO
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Customer Review

Based on 2 publication(s) in Google Scholar

EML 425 Related Antibodies

Top Publications Citing Use of Products

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CBP/p300 GCN5/PCAF TIP60 MOZ/MORF HBO1

  • Biological Activity

  • Protocol

  • Purity & Documentation

  • References

  • Customer Review

Description

EML425 is a potent and selective CREB binding protein (CBP)/p300 inhibitor with IC50s of 2.9 and 1.1 μM, respectively.

IC50 & Target

IC50: 1.1 μM (p300), 2.9 μM (CBP)[1]
In Vitro

EML 425 (EML425, Compound 7h) is a potent and selective reversible inhibitor of CBP/p300, noncompetitive versus both acetyl-CoA and a histone H3 peptide, and endows with good cell permeability. EML 425 inhibits both p300 and CBP (IC50 values of 2.9 and 1.1 μM, respectively) while being practically inactive against the enzymes general control non derepressible-5 (GCN5) and p300/CBP-associated factor (PCAF). EML 425 induces a marked and time-dependent reduction in the acetylation of lysine H4K5 and H3K9 in U937 cells. EML 425 is shown to be a reversible inhibitor, noncompetitive versus both acetyl-CoA and a histone H3 peptide, and able to bind both the free enzyme and the enzyme-substrate complex, even with unequal affinity constants. The best scoring docking poses suggest that the binding site for EML 425 is an alternative pocket lying near the substrate lysine binding groove and close to the acetylation site[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

EML 425 Related Antibodies
Molecular Weight

440.49

Formula

C27H24N2O4
CAS No.
Appearance

Solid

Color

Light yellow to yellow

SMILES

O=C(N(C(N(CC1=CC=CC=C1)C/2=O)=O)CC3=CC=CC=C3)C2=C/C4=C(C=C(O)C=C4C)C
Shipping

Room temperature in continental US; may vary elsewhere.
Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 2 years
-20°C 1 year
Solvent & Solubility
In Vitro: 

DMSO : ≥ 250 mg/mL (567.55 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.2702 mL 11.3510 mL 22.7020 mL
5 mM 0.4540 mL 2.2702 mL 4.5404 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.08 mg/mL (4.72 mM); Clear solution

    This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation
References
Kinase Assay
[1]

To explore the mechanisms of p300 inhibition by EML 425, reactions are performed. Each assay containing 5 nM p300, 3 μM Acetyl CoA, and 50 nM biotinylated H3 (1-21) peptide in 10 μL of assay buffer (50 mM Tris-HCl, pH 8.0, 0.1 mM EDTA, 1 mM DTT, 0.01% Tween-20, 0.01% BSA, 330 nM TSA) is incubated at room temperature for 15 min in a White opaque OptiPlate-384. Reactions are stopped by adding garcinol (final concentration 50 μM) and antiacetyl histone H3 lysine 9 (H3K9Ac) acceptor beads (final concentration 20 μg/mL). After 60 min of incubation at room temperature, 20 μg/mL final concentration of Alpha Streptavidin Donor beads are added in subdued light and incubated in the dark for 30 min at room temperature. Signals are read in Alpha mode with a Enspire plate reader[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Cell Assay
[1]

For cell cycle analysis, 500 μL of U937 cells (2.5×105 cells/mL) are seeded in 24-well plastic plates and incubated with 100 μM EML 425 for 72 h. After this period of treatment, 500 μL of hypotonic buffer (33 mM sodium citrate, 0.1% Triton X-100, 50 μg/mL propidium iodide) is added to cell suspensions. Cells are analyzed with a FACScan flow cytometer and quantitative analysis of cell cycle distribution and hypodiploid nuclei is performed using ModFit LT Macintosh software. All the experiments are performed at least in triplicate[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 2.2702 mL 11.3510 mL 22.7020 mL 56.7550 mL
5 mM 0.4540 mL 2.2702 mL 4.5404 mL 11.3510 mL
10 mM 0.2270 mL 1.1351 mL 2.2702 mL 5.6755 mL
15 mM 0.1513 mL 0.7567 mL 1.5135 mL 3.7837 mL
20 mM 0.1135 mL 0.5675 mL 1.1351 mL 2.8377 mL
25 mM 0.0908 mL 0.4540 mL 0.9081 mL 2.2702 mL
30 mM 0.0757 mL 0.3784 mL 0.7567 mL 1.8918 mL
40 mM 0.0568 mL 0.2838 mL 0.5675 mL 1.4189 mL
50 mM 0.0454 mL 0.2270 mL 0.4540 mL 1.1351 mL
60 mM 0.0378 mL 0.1892 mL 0.3784 mL 0.9459 mL
80 mM 0.0284 mL 0.1419 mL 0.2838 mL 0.7094 mL
100 mM 0.0227 mL 0.1135 mL 0.2270 mL 0.5675 mL
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EML 425 Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

EML 4251675821-32-5EML425EML-425Histone AcetyltransferaseEpigenetic Reader DomainHATsHATInhibitorinhibitorinhibit

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