sentence: UL24 protein contains five homology domains ( HDs ) with a high percentage of amino acid identity among its homologs of the other Herpesvirus family members ( including HSV1 / 2 UL24 , EHV-1 ORF37 , HCMV UL76 , MHV-68 ORF20 , and so on ) and one PD - ( D / E ) XK endonuclease motif in the N-terminal regions ( NTRs ) [ 12 – 14 ] .