2.1 Samples and data
164 complete TMPRSS2 protein sequences of 164 animal species (one
protein sequence for each species) were collected from NCBI, including
80 Mammalia, 34 Aves, 13 Reptilia, 3 Amphibia, and 34 fish. Pig, horse,
cattle, duck, goose, chicken, dog, cat, and hamster that have
potentially direct contacts with humans.. The accession number of each
sequence is listed in Table S1.