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The major promoter element of the Xenopus laevis 5S RNA gene is located within the transcribed region of the gene and forms the binding site for the transcription initiation factor TFIIIA. We report an analysis of deletion and substitution mutations within the coding region of the major oocyte-type 5S gene of X. laevis. Our results differ from those of(More)
The general transcription factor TFIIIC is necessary for transcription initiation by RNA polymerase III. TFIIIC binds predominantly to the B-Block promoter element, which is present in tRNA genes, several viral RNA genes and repetitive DNA elements, and to the TFIIIA.DNA complex on 5 S RNA genes. Here we report a characterization of Xenopus laevis TFIIIC(More)
Electrocrystallization of BEDT-TT F in THF with tetrabutylammonium nitrate as supporting electrolyte leads to the deposition of at least three different phases. The a-phase (C UIH 8S8)3(N 0 3)2, M r = 1277.98, crystallizes in the monoclinic space group P 2Jn. The structure of this solid was solved: a = 5.890(2), b = 31.125(10), c = 12.915(6) Ä , ß =(More)
(C9H7INO • C12H4N4) triclinic PT, a = 7.161(5) A, b = 8.639(5) Ä, c = 17.392(6) A, a 64.96(4)°, ß = 80.64(3)°, y = 76.99(3)°, V = 1075.6 A3, Z = 2, dc = 1.47 Mgm-3. The structure was refined to R — 0.114 for 2022 reflections. It consists of segregated diadic stacks of TCNQ and 4-oxo-iodoquinolinium ions. Interplanar distances in the TCNQ stack are 3.09( 1)(More)