JBS Products: Phasing
Tantalum Cluster Derivatization Kit
The huge TaBr cluster gives a very strong SIR, MIR and MAD signal. Stable, soluble, and pre-aliquoted for convenient use.
Selections of halogenated ATP or GTP derivatives in single kits will enable you to screen them all in parallel. Don't waste time and crystals with a conventional "trial and error" heavy atom screen - get all the material you need for MIR or MAD experiments from one 24 well tray!
Three iodines form a triangle that is easily identified in the anomalous electron density maps produced by SAD or SIRAS.