TABLE 2.
ATPase activities of clamp loaders
| Cofactor | Turnovera
|
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| RFC
|
Ctf18-RFC
|
Elg1-RFC
|
Rad24-RFCb
|
Rfc2-5
|
||||||
| −RPA | +RPA | −RPA | +RPA | +RPA-1ΔN | −RPA | +RPA | −RPA | −RPA | +RPA | |
| None | 6 | 4 | 32 | 35 | 33 | 3 | 4 | 13 | 15 | 22 |
| PCNA | 12 | 10 | 30 | 34 | 29 | 21 | 23 | 42 | 35 | 41 |
| DNA | 90 | 30 | 89 | 46 | 92 | 3 | 9 | 18 | 33 | 25 |
| DNA+PCNA | 95 | 102 | 138 | 37 | 142 | 19 | 25 | 43 | 42 | 44 |
Turnover numbers (ADP formed/ min/RFC) are given. Standard errors are 5%. See Materials and Methods for details.
Data for Rad24-RFC from reference 28.