| 1RZR | A:1-60; C:1-60; D:1-60; G:1-60 | CRYSTAL STRUCTURE OF TRANSCRIPTIONAL REGULATOR-PHOSPHOPROTEIN-DNA COMPLEX |
| 1ZVV | A:1-59; B:1-59; G:1-59 | CRYSTAL STRUCTURE OF A CCPA-CRH-DNA COMPLEX |
| 2HSG | A:2-60 | STRUCTURE OF TRANSCRIPTION REGULATOR CCPA IN ITS DNA-FREE STATE |
| 2JCG | A:3-51 | APO FORM OF THE CATABOLITE CONTROL PROTEIN A (CCPA) FROM BACILLUS MEGATERIUM, WITH THE DNA BINDING DOMAIN |