Fig. 6.

Comparison of claudin-4 sequence between Monodelphis domestica and Didelphis virginiana opossums. The NCBI sequence of Monodelphis domestica opossum claudin-4, top sequences (XM_001366871.1) was compared with the Didelphis virginiana opossum claudin-4, bottom sequence (obtained from the OK cell cDNA library) using Emboss Needle Pairwise Alignment software. Base pair differences coding for a synonymous amino acid are in green and nonsynonymous changes are displayed in red. The coding amino acid is written above. The blue sequence at the 3′-end of the Didelphis virginiana sequence was inserted and codes for the HA tag.