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Novel zinc finger motif in the basal transcriptional machinery : three-dimensional NMR studies of the nucleic acid binding domain of transcriptional elongation factor TFIIS
Transcriptional elongation provides a key control point in the regulation of eukaryotic gene expression. Here we describe homonuclear and lSN-heteronuclear 3D NMR studies of the nucleic acid binding domain ...
Structure of a new nucleic-acid-binding motif in eukaryotic transcriptional elongation factor TFIIS
Transcriptional elongation involves dynamic interactions among RNA polymerase and single-stranded and double stranded nucleic acids in the ternary complex1–4. In prokaryotes its regulation pro-vides an important mechanism ...
Shimura subgroups of Jacobians of Shimura curves
Given an indefinite quaternion algebra of reduced discriminant D and an integer N relatively prime to D, one can construct Shimura curves Sh0(N, D) and Sh1(N, D), which are analogues of X0(N) and X1(N). The natural morphism ...
On some locally 3-transposition graphs
Let ∑_n^ε be the graph defined on the (+)- points of an n-dimensional GF(3)-space carrying a nondegenerate symmetric bilinear form with discriminant ε, points are adjacent if they are perpendicular. We prove that if ε = ...
A local characterization of the graphs of alternating forms and the graphs of quadratic forms over GF(2)
Let Δ be the line graph of PG(n –1,2), Alt(n,2) be the graph of the n-dimensional alternating forms over GF(2), n ≥ 4. Let Γ be a connected locally Δ graph such that 1. the number of common neighbours of any pair of vertices ...
Congruences between cusp forms and the geometry of Jacobians of modular curves
Abstract not available in fulltext.