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Predicted MFE structure for VcQrr3 with the conserved region (20–51 of 107 nucleotides) shown in bold. VcQrr2 has a comparable four-armed MFE prediction while VcQrr4 has an additional helix forming a ‘cumberbun’ across the middle. VcQrr1 has the common first and last helices, but different base pairings forming a single middle arm.
