600+ KINASE & 45+ PHOSPHATASE ACTIVITY ASSAYS

Kinase and phosphatase assay kits, enzymes, and substrates for inhibitor discovery

Measure kinase and phosphatase activity continuously in real time—with validated assays, physiological ATP conditions, and kinetic insight that endpoint assays cannot provide.

Explore 600+ kinase assays, 45+ phosphatase assays, active recombinant enzymes, cell lysate assays, customer substrate development, compound profiling services, and more.

Find your target

Search accross 575+ kinase and 45+ phosphatase assays to explore AssayQuant’s product availability and services.

SHOP BY PRODUCT LINE

Highly Quantitative Biochemical Fluorescent Assays and Active Recombinant Enzymes

Our catalog spans real-time kinase activity assays, phosphatase activity assays, high-purity active recombinant enzymes, individual peptide substrates and sensor reagents, and cell lysate kinase assays for endogenous activity — plus custom assay development services for teams working on novel targets.

Build the assay around your target and workflow

from $425/kit

575+ Kinase Activity Assays

Real-time, continuous-read kinase activity and inhibition assays, validated and ready to ship.

Browse kinase assays →
from 10 µg aliquots

1,100+ Active Recombinant Enzymes

High-purity recombinant kinases and phosphatases for screening, profiling, and custom assay builds.

Browse recombinant enzymes →
from $450/kit

50 Phosphatase Activity Assays

Real-time, direct phosphatase activity and inhibition assays, validated and ready to use.

Browse phosphatase assays →
quote-based

Custom Substrate Development

Don't see a validated substrate for your target of interest? We'll develop one for you.

Explore assay development →
from $495/kit

Cell Lysate Kinase Activity Assays

Real-time kinase activity measured directly in lysates — functional activity in endogenous samples.

Browse lysate assays →
< $0.05 per well

Peptide Substrates and Reagent Systems

Purchase individual sensor peptide substrates and supporting reagents for internal assay workflows.

Request a quote →
GET IN TOUCH

Get pricing, availability and guidance

Tell us your more about your science and we'll send pricing, lead time, and the right format for your screen — kinetic, lysate, or red.

 
AQT Capabilities Brochure Preview

Capabilities Brochure

From early screening through preclinical testing, AssayQuant accelerates drug discovery by turning kinetic insight into confident, data-driven decisions. Download our capabilities brochure to learn more today.

DOWNLOAD
OUTSOURCE COMPOUND TESTING

Kinase and Phosphatase Screening and Profiling Services That Generate Decision-Ready Data

Unlock a deeper understanding of inhibitor selectivity, potency, and mechanism of action with AssayQuant's KinSight™ CRO services.

Explore Selectivity & Off-Target Effects

Activity Based Kinome Profiling

Evaluate inhibitor selectivity across broad or targeted kinase panels with activity data, kinetic context, and actionable reporting. 

Browse kinase profiling services →
Unlock Mechanistic Insights

Time Dependent Inhibition (TDI) Characterization

Get the most important kinetic parameters you need to understand your compound’s MOA and MOI. 

Explore TDI services →
Assess Inhibitor Potency

IC50  Determination 

Accurately determine inhibitor potency using real-time kinetic data and physiologically relevant ATP concentrations.

Compound testing services →

Frequently asked questions

What kinds of products does AssayQuant sell?

Real-time kinase and phosphatase activity assay kits, high-purity active recombinant enzymes, individual peptide substrates and sensor reagents, cell lysate kinase assays, and kinome/phosphatome profiling and custom assay development services.

How fast can I get a kit shipped?

Most catalog kits ship within 3–5 business days. Custom formats and bulk orders may take longer — ask your rep for a specific date.

What's the difference between kinetic, lysate, and red formats?

Kinetic is our core real-time biochemical format, lysate reads endogenous activity directly from cell or tissue samples, and Red is optimized for red-shifted fluorescence detection.

Do you offer bulk or custom formats?

Yes — custom assay development and bulk enzyme production are both available. Reach out and we'll scope it with you.

PRODUCT RESOURCES

Technical Research and Development Resources for AssayQuant's Enzyme Activity Assays

img-poster-real-time-dev
 KINASE POSTER

Development of a Real-Time, Fluorescence Microplate Assay for Epidermal Growth Factor Receptor (EGFR) Tyrosine Kinase Activity

Tyrosine kinase activity and the downstream signaling cascades are pivotal in oncogenesis, drug resistance, and tumor recurrence. Learn how our team developed a continuous, real-time, fluorescence-based assay for EGFR.

Download The Poster
img-poster-sox-based
 PHOSPHATASE POSTER

Sox-based Sensor Phosphopeptides for Continuous, Homogeneous, and Quantitative Monitoring of Protein Phosphatase Activity

Protein phosphatases are critical drug targets for cancer therapy development with a need for robust assays that monitor phosphatase enzyme activity. Learn how our assays continuously monitor protein phosphatase activity.

Download The Poster

Didn’t find what you were looking for?

Stay Informed

Want to hear the latest about our technology? Be among the first to learn about our latest products and services.

AssayQuant Technologies logo

 

 

260 Cedar Hill Street
Marlboro MA 01752

Phone: +1 (508) 804-3155

      

© 2026 AssayQuant Technologies, Inc. - All Rights Reserved - Privacy Policy - Terms & Conditions - FCOI