FIGURE 4. Shell protein structure.
From the following article:
Wen Jiang, Juan Chang, Joanita Jakana, Peter Weigele, Jonathan King and Wah Chiu
Nature 439, 612-616 (2 February 2006)
doi:10.1038/nature04487

a, Surface rendering of three asymmetric units forming one icosahedral face of the T = 7l shell. Each of the seven subunits is coloured differently. b, A single averaged shell protein subunit with three helices (H1–H3) and five sheets (B1–B5) annotated. c, Ribbon representation of the atomic model of HK97 head protein gp5 (Protein Data Bank accession 1OHG). Helices are coloured in blue whereas sheets are in red. d, Superposition of epsilon15 averaged shell protein subunit and the HK97 head protein gp5.
