Figure 1 - full size

Figure 1.
FIG. 1. A, schematic representation of the domain structure of the proteins described in this study. 1, the stable adenovirus fiber fragment (fiber residues 319-582). Residues belonging to the shaft domain (Val319-Gly392) are symbolized with a rectangle, and residues belonging to the globular head (Leu399-Glu582) are symbolized with a circle. Residues 393-398 (Asn-Lys-Asn-Asp-Asp-Lys) form the linker that connects the two parts and are drawn in italics. 2, the chimeric protein that comprises the fibritin foldon domain (fibritin residues Gly457-Leu483, oval shape) fused to the C terminus of the shaft domain with use of the natural linker between the two domains. To avoid confusion, the numbers corresponding to the fibritin residues are underlined. The residues Gly-Ser, highlighted in bold, are not part of the coding sequence and are introduced as a result of the cloning strategy. 3, the chimeric protein carrying the foldon domain at the C-terminal end of the shaft domain without the use of the natural linker sequence. 4, the chimeric protein carrying the foldon domain at the N-terminal end of the shaft domain. The residues Gly-Ser-Gly, highlighted in bold, do not belong to the coding sequence and are introduced as a result of the cloning strategy. B, amino acid sequences of the fiber shaft residues 319-392 and of the fibritin foldon residues 457-483. The fiber shaft sequence repeat numbers (repeats 18-22 according to Ref. 9) are indicated on the left. The repeats are not aligned.