TABLE 2.

Syncytium formation over time by mutant NBV p10s with mutations at hydrophilic or charged residues^a

Construct	Syncytium formationb at:
	24 h	36 h	48 h	72 h
NBV p10	++++	D	D	D
S10G	+++	++++	D	D
S10V	++	++	+++	++++
S14G	++	++	+++	+++
S14V	+	++	+++	+++
H16A	+++	++++	D	D
H16D	+++	++++	D	D
Mock	−	−	−	−

^aGly and Val were introduced at residues 10-Ser and 14-Ser. The charged residue 16-His was mutated to Ala or Asp as described in Materials and Methods.

^bSee Table 1, footnote b, for explanation of the results. The results shown are representative of three separate experiments.