Table 1:

UL138 mutant alleles

Mutant name	Mutation	Specific substitutions	Corresponding mutant virus	Study
WT	Wild type; no mutations in UL138		TB138-HA AD138	(Lee et al., 2015)
mY-1	Mutated first tyrosine motif	Y26LAY to A26AAY
mY-2	Mutated second tyrosine motif	Y44RWL to A44AAA
mY-3	Mutated third tyrosine motif	Y54GEY to A54GEY
mLL	Mutated acidic cluster dileucine motif	D142VDLL to A142AAAA	TB138 mLL-HA
Δ4	All Golgi motifs mutated	The four above mutant alleles combined in a single allele	TB138 Δ4-HA AD138Δ4	(Gelbmann and Kalejta, 2019)