Figure 4.

Amino acid alignment of deer mouse (Pema), house mouse (Mus), rat (Rattus) and human (Homo) IL-13. Sequences were aligned as described in Figure 1. The deer mouse fragment represents 47% of the polypeptide. The fragment includes helices B and C and part of helix D, and both β-strands (underlined). Three of the four expected cysteines (*) involved in intrachain disulfide bonds are also present.