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Hi Yuan, Basically all tRNA structures in pdb will contain pseudo-U, and starting from old tRNAPhe literature you will find a lot on the structural consequences of having pseudo-U in RNA. Poul On 27/04/2007, at 3.45, Yuan Lin wrote: > Dear All, > I solved a structure of a pseudouridylated RNA and am now > starting to > write it up. Except for the ribosome, I can only find one X-ray > structure > that contains pseudo-uridine (Arnez JG and Steitz TA, 1994, > Biochemistry > 33:7560-7567). I was wondering is there any X-ray structures that I am > missing? Also, I am looking for the references on the effect of psi > on RNA > structure, and likewise have come up empty handed. Could anyone > suggest some > for me? Thanks very much! > > > Best, > Yuan > > ------------------------ > Yuan Lin > Graduate Student > Biochemistry and Molecular Biology > Johns Hopkins University > Rm. W8702 BSPH > 615 N. Wolfe St. > Baltimore, MD 21205 > Ph. 443-287-4988 >