RT Journal Article SR Electronic T1 Protein Interaction in the Gaseous Phase JF Science's STKE JO Sci. STKE FD American Association for the Advancement of Science SP tw449 OP tw449 DO 10.1126/stke.3142005tw449 VO 2005 IS 314 YR 2005 UL http://stke.sciencemag.org/content/2005/314/tw449.abstract AB The identification of transient or readily reversible interactions between proteins is a difficult problem that has been addressed with various methods. Ruotolo et al. have now applied mass spectrometry to the problem to exploit its advantages of sensitivity and speed. They show that the trp RNA binding attenuation protein (TRAP) maintains its 11-membered ringlike structure in the gas phase and that binding of RNA and tryptophan influences the shape and stability of the ring in a fashion consistent with its known behavior in aqueous solution. B. T. Ruotolo, K. Giles, I. Campuzano, A. M. Sandercock, R. H. Bateman, C. V. Robinson, Evidence for macromolecular protein rings in the absence of bulk water. Science 310, 1658-1661 (2005). [Abstract] [Full Text]