Table 1 Numbers of α-keratin genes present in 16 mammalian species
Species | Total genes | Type I genes | Type II genes | Hair keratins | Hair follicle-specific epithelial keratins | Hair follicle-specific keratins |
|---|---|---|---|---|---|---|
Weddell seal | 54(1)[9] | 28[5] | 26(1)[4] | 16[3] | 9[1] | 25[4] |
Pacific walrus | 58(2)[2] | 29 | 29(2)[2] | 18(1) | 9 | 27(1) |
Giant panda | 58(2)[6] | 30[2] | 28(2)[4] | 18(1)[2] | 9[1] | 27(1)[3] |
Polar Bear | 58(4)[9] | 29[4] | 29(4)[5] | 19(2)[1] | 9[1] | 28(2)[2] |
Bottlenosed dolphin | 36(8)[7] | 18(3)[4] | 18(5)[3] | 12(3)[3] | 2(1)[1] | 14(4)[4] |
Killer whale | 36(10)[2] | 18(4)[2] | 18(6) | 11(3) | 3 (2)[1] | 14(5)[1] |
Yangtze finless porpoise | 36(16)[3] | 18(8)[1] | 18(8)[2] | 12(9)[1] | 3(3) | 15(12)[1] |
Yangtze River dolphin | 34(8) | 17(4) | 17(4) | 9(1) | 3(3) | 12(4) |
Sperm whale | 32(6)[3] | 16(4)[2] | 16(2)[1] | 8(1) | 1 | 9(1) |
Minke whale | 45(13) | 19(4) | 26(9) | 13(5) | 4(2) | 17(7) |
Bowhead whale | 42(17)[7] | 20(8)[3] | 22(9)[4] | 13(7)[2] | 4(3)[1] | 17(10)[3] |
Cow | 61(4)[2] | 29(1) | 32(3)[2] | 18(1)[1] | 9 | 27(1)[1] |
Sheep | 60(5)[3] | 29 | 31(5)[3] | 18[2] | 9 | 27[2] |
Alpaca | 54(5)[7] | 28(2)[3] | 26(3)[4] | 16(2)[4] | 9 | 25(2)[4] |
African savanna elephant | 60(5)[3] | 29(2) | 31(3)[3] | 18(1)[3] | 9 | 27(1)[3] |
Florida manatee | 56(6)[4] | 26(1)[2] | 30(5)[2] | 17(1)[1] | 9(1) | 26(2)[1] |