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. 2018 Jul 18;9:1577. doi: 10.3389/fmicb.2018.01577

FIGURE 3.

FIGURE 3

HMM logo of representative mature endogenous retrovirus K proteases. (A) The structure of the HIV-1 protease 3A2O (Hidaka et al., 2009) is shown with the major regions referenced in the text highlighted. (B) HMM logo of the aligned mature protease sequences of each ERVK entry in Repbase (HK1 through 10) with referenced regions highlighted in the same colors as the homologous regions in 3A2O. This figure was made with Pymol, Geneious, and GIMP.