Compositions comprising a dehalogenase substrate and a contrast agent and methods of use

摘要

A mutant hydrolase optionally fused to a protein of interest is provided. The mutant hydrolase is capable of forming a bond with a substrate for the corresponding nonmutant (wild-type) hydrolase which is more stable than the bond formed between the wild-type hydrolase and the substrate. Substrates for hydrolases comprising one or more functional groups are also provided, as well as methods of using the mutant hydrolase and the substrates of the invention. Also provided is a fusion protein capable of forming a stable bond with a substrate and cells which express the fusion protein.

主权项

1. A compound of formula (I): R-linker-A-X, wherein R comprises a metal ion chelator, wherein the linker is a multiatom straight or branched chain including C, N, S and/or O and comprising no more than 30 carbon atoms, wherein A-X is a substrate for a dehalogenase, wherein A is (CH2)n and n=2-10, and wherein X is a halogen.