TABLE 2.
nmmHC (zip) suppresses the enhancement of PP1β9C1 by PP1α96A (from cross PP1β9C1/FM7 ; Df(3R)crb87-5/TM6B × zip1/CyO ; PP1α96A1/PP1α96A1)
| F1 genotype | |
|---|---|
| PP1β9C1/Y ; zip1/+ ; PP1A96A1/Df(3R)crb87-5 | 10 |
| PP1β9C1/Y ; CyO/+ ; PP1α96A1/Df(3R)crb87-5 | 0 |
| PP1β9C1/Y ; zip1/+ ; PP1α96A1/TM6B | 12 |
| PP1β9C1/Y ; CyO/+ ; PP1α96A1/TM6B | 16 |
| FM7/Y ; zip1/+ ; PP1α96A1/Df(3R)crb87-5 | 18 |
| FM7/Y ; CyO/+ ; PP1α96A1/Df(3R)crb87-5 | 3 |
| FM7/Y ; zip1/+ ; PP1α96A1/TM6B | 3 |
| FM7/Y ; CyO/+ ; PP1α96A1/TM6B | 5 |
| PP1β9C1/+ ; zip1/+ ; PP1α96A1/Df(3R)crb87-5 | 10 |
| PP1β9C1/+ ; CyO/+ ; PP1α96A1/Df(3R)crb87-5 | 20 |
| PP1β9C1/+ ; zip1/+ ; PP1α96A1/TM6B | 10 |
| PP1β9C1/+ ; CyO/+ ; PP1α96A1/TM6B | 23 |
| FM7/+ ; zip1/+ ; PP1α96A1/Df(3R)crb87-5 | 16 |
| FM7/+ ; CyO/+ ; PP1α96A1/Df(3R)crb87-5 | 16 |
| FM7/+ ; zip1/+ ; PP1α96A1/TM6B | 7 |
| FM7/+ ; CyO/+ ; PP1α96A1/TM6B | 22 |
| Total | 191 |
A mutant copy of the nonmuscle myosin heavy chain zipper suppresses the lethality of PP1β9C1/Y ; PP1α96A1/Df(3R)crb87-5, suggesting that PP1α96A enhances PP1β9C1 through the known role of PP1β9C in nonmuscle myosin regulation.