A building block having the dual capabilities of transferring the genetic
information e.g. by recognising an encoding element and transferring a
functional entity to a recipient reactive group is diclosed. The building
block can be designed with an adjustable transferability taking into
account the components of the building block. The building block may be
used in the generation of a single complex or libraries of different
complexes, wherein the complex comprises an encoded molecule linked to an
encoding element. Libraries of complexes are useful in the quest for
pharmaceutically active compounds.
