Kinase Assay Services: Custom Assay Development to Accelerate Drug Discovery

Kinases sit at the center of human biology. They regulate phosphorylation events that control cell growth, division, signaling, immune activation, metabolic regulation, and much more. As a result, kinase drug discovery represents one of the most active and competitive areas in modern therapeutics—from oncology and immunology to inflammation, virology, and rare diseases.

But success in kinase drug discovery depends on one foundational element:

A robust biochemical assay that accurately measures kinase activity under screening and lead-optimization conditions.

This is where BellBrook Labs delivers unique value. Built on the proven Transcreener® ADP² Kinase Assay platform and supported by a scientific team with deep enzymology expertise, BellBrook provides kinase assay services and custom assay development that enable you to screen smarter—not just faster. Whether you need a new biochemical assay for a novel kinase, an HTS-ready protocol, or advanced inhibitor profiling, BellBrook offers a complete solution designed to accelerate small-molecule discovery.

Why Specialized Kinase Assay Services Matter

Kinases are powerful targets but come with technical challenges:

Many have low ATP Km values that require careful optimization for accurate inhibitor potency.
Some require complex substrates (peptides, proteins, lipids) that must be tuned for enzyme efficiency.
HTS assay formats demand low reagent usage, high reproducibility, and Z’-factor values typically ≥0.7.
Medicinal chemistry teams increasingly need kinetic measurements, including inhibitor mechanism and residence time—not just IC₅₀ curves.

Building a kinase assay in-house often requires weeks or months of optimization, troubleshooting, and QC. BellBrook Labs eliminates this bottleneck by delivering a fully optimized, validated, and ready-to-run biochemical assay using the same technology deployed by major pharma and biotech groups worldwide.

The Transcreener ADP² Platform: The Foundation for BellBrook’s Kinase Services

Transcreener ADP² is a universal kinase detection method that directly measures the ADP produced during kinase reactions. This eliminates the need for coupling enzymes and reduces the risk of compound interference—two major pain points for kinase assay development.

Key Advantages

Direct detection of ADP with a highly selective antibody.
No coupling enzymes, minimizing artifacts and false positives.
Compatible with nearly all kinases—protein, lipid, metabolic.
Multiple detection modes: Fluorescence Polarization (FP), Fluorescence Intensity (FI), TR-FRET
Works across a wide ATP range, supporting both HTS and detailed mechanism-of-action studies.
Easily miniaturizable to 384- and 1536-well formats for screening and uHTS.

BellBrook scientists have optimized Transcreener assays for hundreds of enzymes, including dozens of kinases, ATPases, and other ADP-producing targets. That expertise is directly applied to every custom assay development project.

Custom Kinase Assay Development: How BellBrook Works with You

Every kinase target is unique. BellBrook’s custom development approach emphasizes scientific partnership and rigorous optimization. Here’s the typical workflow from project kickoff to final deliverables.

1. Feasibility & Experimental Planning

A project begins with a discussion of:

Target biology (e.g., receptor tyrosine kinase, lipid kinase)
Protein constructs and expression system
Substrate requirements (peptide, protein, small molecule)
Known literature values (ATP Km, inhibitor classes)
Screening goals (HTS, lead optimization, orthogonal validation)

From this, BellBrook creates a technical plan tailored to your target and scientific objectives.

2. Enzyme Sourcing & Quality Assessment

BellBrook can use:

Your enzyme supply, verifying purity, activity, and linearity
or
Coordinate enzyme expression and purification through trusted partners.

Active enzyme is then evaluated in Transcreener detection modes to ensure a strong signal window and stable Z’-factor.

3. Full Assay Optimization

BellBrook performs systematic optimization of:

Buffer composition (pH, salts, detergents)
ATP and Mg²⁺ concentrations
Substrate concentration and turnover
Enzyme titration to maintain initial velocity conditions
Incubation time and assay stability
Detection reagent levels (FP, FI, TR-FRET)

The goal: maximize sensitivity and robustness while minimizing enzyme usage.

4. Validation & HTS Readiness

Once optimized, the assay is validated with:

Control inhibitor dose–response curves
ATP Km determination
Mode-of-inhibition studies
Pilot or mini-screens
Plate-to-plate and day-to-day reproducibility measurements
Interference tolerance testing (DMSO, detergents, autofluorescent compounds)

BellBrook delivers a complete assay protocol, including:

Working concentrations
Plate maps
Z’ and performance metrics
Instrument settings
Trouble-shooting guidance

This package is designed so your team can immediately begin screening or SAR studies.

5. Tech Transfer or Ongoing Service

Depending on your needs, BellBrook can:

Transfer the assay to your lab using Transcreener ADP² Kinase Assay Kits
Provide continued assay support
Conduct pilot screening, IC₅₀ determination, or inhibitor profiling as a service

This flexibility makes BellBrook a long-term partner across multiple stages of drug discovery.

6. Typical Timelines

Most kinase assay development projects are completed in 2–4 weeks, depending on enzyme availability and validation requirements.

BellBrook’s Full Menu of Kinase Assay Services

1. De Novo Kinase Assay Development

Ideal for early programs or novel kinase targets. Includes complete optimization and validation using Transcreener ADP².

2. HTS Assay Configuration (384 & 1536 Well)

BellBrook prepares a screening-ready assay, including:

Reagent preparation
Plate-reader settings
DMSO tolerance
Z’ performance requirements
Signal-to-background expectations

You can use BellBrook’s Free Assay Development pathway that pairs assay optimization with a qualifying kit purchase.

3. Hit Identification & Confirmation Screening

BellBrook can execute screens using:

Your internal library
A focused kinase set
Commercial compound collections

Follow-up confirmation and counter-screens are also available.

4. Inhibitor Profiling, IC₅₀, and Ki Determination

Beyond simple potency values, BellBrook offers:

Mode-of-inhibition analysis
ATP-competitive vs. allosteric classification
Residence time measurements
Mechanistic kinetic studies

These data guide medicinal chemistry and triage structure–activity relationships.

5. Pathway-Level Support

BellBrook’s broader enzyme expertise enables:

Multi-target panels
Orthogonal assays
Pathway reconstruction at the biochemical level

This is particularly valuable in oncology and innate immunity programs.

What Makes BellBrook’s Kinase Assay Services Different

Deep Enzymology Expertise

You work directly with scientists who develop and optimize Transcreener assays—not generalist CRO staff. Enzyme kinetics, ATP Km characterization, and inhibitor mechanisms are core competencies.

Proven, Universal Technology

Transcreener ADP² is widely used in pharma and biotech. Its reliability and universality underpin every custom assay we build.

Speed Without Sacrificing Quality

Projects are completed in weeks, not months—without cutting corners on validation or sensitivity.

Flexible Engagement Models

Choose:

Assay development only
Assay plus HTS services
Tech transfer for in-house operations
Ongoing inhibitor profiling

Clear, Transparent Deliverables

Each project includes a publication-quality protocol, datasets, and figures. Everything is provided so your internal team can act immediately.

Use Cases: Where BellBrook Creates Outsized Impact

1. Novel Oncology Kinase with Limited Enzyme

A biotech team working with a low-yield kinase receives an assay optimized for minimal enzyme consumption, high sensitivity, and immediate screening.

2. Orthogonal Validation for Cell-Based Hits

A pharma group uses BellBrook’s kinase assays to determine biochemical inhibition upstream of ERK or other pathways, clarifying mechanism and potency.

3. Small Biotech Without HTS Infrastructure

A startup lacking screening capacity outsources assay development and mini-screening, receiving a complete dataset for investor pitches and SAR decisions.

How to Get Started with BellBrook

A productive kickoff conversation includes:

Target information
Available enzyme/substrates
Screening goals
Desired timeline
Plate format and detection preferences

From there, BellBrook provides:

A custom development plan
Clear scope & pricing
Optional free development pathways
A detailed projected timeline

Ready to Screen Smarter?

BellBrook Labs provides the expertise, technology, and scientific partnership needed to advance kinase drug discovery efficiently and with confidence. Whether you need a fully custom assay, a screening-ready protocol, or in-depth kinase inhibitor profiling, BellBrook’s kinase assay services help you accelerate discovery—and generate better data with fewer resources.

Learn More About Kinase Assay Development Services Today.

FAQs: Kinase Assay Services & Custom Assay Development

1. What are kinase assay services?

Kinase assay services are outsourced experimental workflows for measuring kinase activity, inhibitor potency, and mechanism of action using biochemical assays. At BellBrook Labs, this includes everything from custom assay development with Transcreener ADP² to HTS configuration, pilot screening, and detailed inhibitor profiling.

2. How is BellBrook’s approach different from other CROs?

BellBrook’s kinase assay services are built on:

A universal ADP detection platform (Transcreener ADP²) proven across dozens of kinase targets.
Direct access to the scientists who invented and optimized that platform for more than 100 enzymes.
Strong emphasis on kinetics, initial velocity conditions, and residence time, not just endpoint IC₅₀ values.

This combination gives you a more robust, mechanism-aware picture of your kinase inhibitors.

3. Can BellBrook develop assays for any kinase?

In most cases, yes—provided the enzyme can be produced or sourced in an active form. Because Transcreener directly detects ADP, it can be applied to protein kinases, lipid kinases, and metabolic kinases with appropriate substrates and buffers. BellBrook has experience with many validated kinase targets as well as non-canonical ADP-producing enzymes.

4. How much enzyme is required for custom kinase assay development?

Exact requirements depend on enzyme activity and desired throughput, but Transcreener’s high sensitivity typically allows lower enzyme usage than many coupled assays. In practice, BellBrook can often establish conditions using relatively small quantities of enzyme while still achieving strong Z’ values (0.7–0.9).

5. How long does a typical kinase assay development project take?

For kinases with good-quality enzyme in hand, BellBrook usually completes custom assay development and validation in about 2–4 weeks, depending on the depth of kinetic and interference studies requested.

6. Can I transfer the assay in-house after BellBrook develops it?

Yes. A common model is:

BellBrook develops and validates the assay using Transcreener ADP².
You purchase the appropriate Transcreener Kinase Assay Kits and receive a detailed protocol plus plate-reader settings.
Your team runs the assay in-house for HTS, SAR, or routine profiling, with BellBrook available for ongoing technical support.

7. Does BellBrook only support kinase assays?

No. While kinase assay services are a major focus, BellBrook also supports ATPases, GTPases, helicases, methyltransferases, cGAS/STING pathway enzymes, and more, using Transcreener and complementary platforms. That breadth is especially valuable when you’re building multi-target or pathway-level biochemical panels.