The present invention provides user-directed construction of novel
specific homo- and hetero-dimeric, and multimeric assemblages of
proteins. The present invention is comprised of gene sequences that
transcribe peptide sequences that form links between proteins, where the
peptide sequences produce a hook or loop which supports specific
self-assembly of homo-dimers, hetero-dimers and multimers of the proteins
to which they are attached. The hook or loop may have a short aliphatic
repeat sequence and a metal binding loop. The present invention also
provides a method of constructing a hook motif of metal binding loop
sequences that may be attached to at least one aliphatic repeat sequence
to produce the assemblages of proteins. Also provided are protein
structures produced by the methods of the present invention.