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(a) Assaying for intermolecular interactions. Lane 1, repeat a; lane 2, repeat b; lane 3, repeat variant b; lane 4, repeat c; lane 5, repeat variant c. (b) Methylation analysis of the guanine residues in repeat a. Lane 1, higher-order complex of a single repeat of a. Guanines inaccessible to DMS are marked with asterisks. Lane 2, monomer form of a single repeat of a.
