Babitzke P., et al., 199
Babitzke P., Bear D.G., Yanofsky C. TRAP, the trp RNA-binding attenuation protein of Bacillus subtilis, is a toroid-shaped molecule that binds transcripts containing GAG or UAG repeats separated by two nucleotides // Proc. Natl. Acad. Sci. 1995. - Vol. 92. - N 17. - P. 7916-7920.