Amino acid sequence alignment of the HKU5-19s, HKU5-33s, and HKU5-1 RBMs. Residues indicated with a red background are strictly conserved, whereas residues indicated with a white background show variability. The residue numbering corresponds to HKU5-19s. HKU5-33s insertions are shown as black dots. The blue lines indicate residues outside the RBM shown for visualization purposes around the HKU5-33s insertions.
