“…The HHV-6 ORFs SHLI, SHL2, SSL2 and SFLI are related to one or more members of the HCMV US22 gene family, which consists of ORFs US22, US23, US24, US26, IRS1/TRS1, UL23, UL24, UL28, UL29, UL36 and UL43 (Weston & Barrell, 1986;Kouzarides et al, 1988;Chee et al, 1990). A summary of the overall amino acid sequence similarity between these proteins is shown by the FASTA score matrix (Table 3).…”