TABLE 4.

Summary of Gag mutant phenotypes^a

Tf1 element	Transposition	cDNA synthesis	Gag	RT	IN	Particle formation	RNA packaging
Tf1-WT	+++	+++	+++	+++	+++	Cytoplasmic particles and aggregates	+++
Tf1-PRfs	−	−	+++	−	−	Cytoplasmic and nuclear particles and aggregates	−
Tf1-ΔA	−	+++	+++	++	++	Cytoplasmic aggregates	++++
Tf1-ΔB	−	−	−	++	++	Not done	−
Tf1-ΔC	−	−	−	+++	+++	No particles	−
Tf1-ΔD	+	+	+++	++	++	Cytoplasmic particles and aggregates	−

^a+, very little; ++, less than the wild type; +++, wild type; ++++, more than the wild type; −, not detected.