The present invention provides a recombinant adenovirus comprising coat proteins
that lack native binding. In particular, the present invention provides a recombinant
adenovirus comprising a penton base protein and a fiber protein, wherein the penton
base protein and the fiber protein lack native binding. The present invention further
provides a recombinant adenovirus comprising (a) a penton base protein that lacks
native binding and (b) a nonnative amino acid sequence that binds a cell-surface
binding site.