BellBrook Labs Products & Reviews

BellBrook Labs delivers bespoke assay development and lead discovery solutions using its Transcreener® HTS platforms. Their expert team optimizes detection of small-molecule modulators for enzyme targets—tailoring buffer, enzyme, and detection conditions to yield strong initial-velocity signals (Z’ 0.7–0.9) in just 2–4 weeks.

The Transcreener® ADP² Kinase Assay Kit universally detects ADP produced by any kinase or ATPase using a direct mix‑and‑read format, eliminating coupling steps. Available in FP, FI, and TR‑FRET formats with far‑red tracers to minimize interference, it's HTS-ready across 96‑, 384‑, and 1536‑well plates with robust Z' ≥ 0.7 performance.

The Transcreener® AMP²/GMP² Phosphodiesterase Assay Kit directly detects AMP or GMP produced by PDEs, ligases, synthetases, ENPP1, and related enzymes using a mix‑and‑read FP or TR‑FRET format—no coupling steps needed. Compatible with 1–1000 µM native substrates, it delivers excellent HTS performance (Z’ ≥ 0.7, ≥100 mP shift) in a one-step, far‑red fluorescence assay.

The Transcreener® UDP² Glycosyltransferase Assay Kit directly detects UDP—the conserved product of glycosyltransferase reactions—in a homogeneous mix-and-read format. Compatible with FP, FI, and TR‑FRET readouts, it supports UDP concentrations from 1–250 µM and delivers exceptional HTS performance (Z’ ≥ 0.7) across 96-, 384-, and 1536‑well formats.

The Transcreener® ADP² TR-FRET Assay produces a far-red, time-resolved Förster-resonance-energy-transfer (TR-FRET) signal that is less sensitive to interference from fluorescent compounds than other detection modes.

The AptaFluor® SAH Methyltransferase Assay Kit enables ultra-sensitive, direct detection of SAH—the universal product of methyltransferase reactions—using a riboswitch-based TR-FRET format. With no coupling enzymes required, it delivers high signal-to-background, Z’ ≥ 0.7, and is fully HTS-compatible for drug discovery and inhibitor screening.

BellBrook Labs’ Lead Discovery Services deliver expert support for hit-to-lead efforts. From inhibitor screening and potency profiling to residence-time, mechanism-of-action, and selectivity studies, their team tailors efficient enzymatic assays to your program—accelerating lead advancement with precision and flexibility.

The Transcreener® cGAMP cGAS Assay Kit offers mix-and-read fluorescent detection of cGAMP—the product of cGAS activity—with no coupling enzymes required. Available in FP or TR‑FRET readouts (far-red tracers minimize interference), it’s HTS-ready (Z’ ≥ 0.7), automation-compatible, and validated on 96‑, 384‑, and 1536‑well formats for enzyme kinetics, SAR, and inhibitor screening.

The CD73 activity assay for HTS and hit-to-lead. Measure specific activity of CD73 in a simple mix-and-read format. The kit is designed for compound library screening and follow-up inhibitor discovery.

The Transcreener dAMP Exonuclease Assay directly measures dAMP produced by exonuclease enzymes as they cleave polynucleotides. 

The Transcreener® GDP GTPase Assay Kit directly measures GDP produced during GTP hydrolysis in a homogeneous mix‑and‑read format—no coupling enzymes needed. Compatible with GTPases, GAPs, and GEFs, it supports FP, FI, and TR‑FRET readouts using far‑red tracers to reduce interference. HTS‑ready with excellent sensitivity (Z′ ≥ 0.7), it streamlines screening and profiling workflows.