Reaction Biology Corporation (“RBC”) is a premier provider of in vitro enzyme activity assays for HTS and profiling. Serving over 450 customers worldwide, we specialize in optimizing nanoliter scale assaying methods, allowing for high quality data with fast turnaround and economical pricing. RBC offers gold-standard radioisotope based assays in the Kinase, Methyltransferase, and HAT enzyme classes, as well as full suite of HDAC/SIRT assays. RBC also now provides an expanding line of active, human recombinant HMTs, including some exclusive complexes. Compound libraries, custom assay development, discovery partnerships and cell-based assays are also part of our portfolio of services.