It is this second class that provides the most interest. Read more from this series in parts one, two, three, and four. Read more from this series in parts one and two. When the spike protein or receptor-binding domain are targeted, the recognized structures are three-dimensional and yield different binding actions. To improve the activity, combinations of two individual nanobodies were joined by a flexible linker to create drug candidates that might be more effective by binding to two different sites simultaneously.
product different ways for different directions to improve the binding.
( z0 way :ARG1-of ( z1 differ :ARG1 ( z2 direction :ARG0-of ( z3 improve :ARG1 ( z4 bind ) ) ) ) :domain ( z5 product ) )
(z0 / way
    :ARG1-of (z1 / differ-02
                 :ARG1 (z2 / direction
                           :ARG0-of (z3 / improve-01
                                        :ARG1 (z4 / bind-01))))
    :domain (z5 / product))
product different ways for different directions to improve the binding .
z0 :ARG1-of z1
z0 :domain z5
z1 :ARG1 z2
z2 :ARG0-of z3
z3 :ARG1 z4