(a) Aligned structure of solute carrier family 4, sodium borate transporter, member 11 protein wildtype (918 aa, grey colour) and energy-minimised wildtype (cyan colour). (b) Aligned structure of SLC4A11 protein mutant (grey colour) and energy-minimised mutant (red colour). (c) Aligned structure of energy-minimised solute carrier family 4, sodium borate transporter, member 11 protein wildtype (cyan) and energy-minimised mutant (red). (d) Surface view of aligned structure of energy-minimised solute carrier family 4, sodium borate transporter, member 11 protein wildtype (cyan) and energy-minimised mutant (red).