(R)-3-hydroxybutanoate(out) + 2 Na(+)(out) = (R)-3-hydroxybutanoate(in) + 2 Na(+)(in)
(r)-3-hydroxybutanoate(out) + 2 na(+)(out) = (r)-3-hydroxybutanoate(in) + 2 na(+)(in)
(R)-3-hydroxybutanoate(out) + 2 Na(+)(out) = (R)-3-hydroxybutanoate(in) + 2 Na(+)(in)
(r)-3-hydroxybutanoate(out) + 2 na(+)(out) = (r)-3-hydroxybutanoate(in) + 2 na(+)(in)