Table 1.
Angles between different helices of two monomers and buried accessible areas (Å2)
| Apo structure of CRPMt (this work) | CRPEc + cAMP complex (1G6N) | CRPEc + cAMP + DNA complex (1O3T) | CRPEc + cAMP + DNA + RNA polymerase C-domain complex (1LB2) | |
|---|---|---|---|---|
| Angle between C-helices of the two monomers (°) | ||||
| 18 | 24 | 24 | 25 | |
| Buried accessible areas | ||||
| Buried accessible surface area of A- and B-chains, respectively (%) | 16 + 18 | 11 + 6 | 12 + 12 | 12 + 12 |
| Area buried by the two chains (Å2) | ||||
| A-chain | 463 | 307 | 347 | 310 |
| B-chain | 550 | 166 | 336 | 310 |
| Angle between E- and F-helices | ||||
| A-chain (°) | 108.0 | 99.0 | 104.0 | |
| B-chain (°) | 91.0 | 102.0 | 104.0 | |
Buried accessible surface areas are between the cAMP-binding and DNA-binding domains among different structures. The PDB code is indicated in parentheses.