Table I. Interactions detected by the yeast two-hybrid system.
Binding domain fusiona | Activation domain fusion | β-Galactosidase activityb |
---|---|---|
(A) | ||
SpoIIE (II–III) | None | – |
None | SpoIIE (II–III) | – |
SpoIIE (II) | None | – |
None | SpoIIE (II) | – |
SpoIIE (III) | None | – |
None | SpoIIE (III) | – |
SpoIIE (II–III) | SpoIIE (II–III) | ++ |
SpoIIE (II) | SpoIIE (II) | – |
SpoIIE (III) | SpoIIE (III) | – |
SpoIIE (II–III) | SpoIIE (III) | – |
SpoIIE (III) | SpoIIE (II–III) | – |
SpoIIE (II) | SpoIIE (II–III) | – |
SpoIIE (II–III) | SpoIIE (II) | – |
(B) | ||
None | FtsZ | – |
SpoIIE (II–III) | FtsZ | + |
SpoIIE (II) | FtsZ | – |
SpoIIE (III) | FtsZ | – |
aSpoIIE (II–III), SpoIIE (II) and SpoIIE (III) contain residues 326–827, 326–567 and 568–827, respectively.
bDetected by colour development using X-gal. ++, detectable colour development within 2 h; +, detectable colour development within 3 h; –, no significant colour development after 8 h.