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.
