| Chain | GOid | namespace | contents |
| A | 0000976 | molecular_function | transcription cis-regulatory region binding |
| A | 0003700 | molecular_function | DNA-binding transcription factor activity |
| A | 0005515 | molecular_function | protein binding |
| A | 0006355 | biological_process | regulation of DNA-templated transcription |
| A | 0042597 | cellular_component | periplasmic space |
| A | 0055085 | biological_process | transmembrane transport |
| B | 0000976 | molecular_function | transcription cis-regulatory region binding |
| B | 0003700 | molecular_function | DNA-binding transcription factor activity |
| B | 0005515 | molecular_function | protein binding |
| B | 0006355 | biological_process | regulation of DNA-templated transcription |
| B | 0042597 | cellular_component | periplasmic space |
| B | 0055085 | biological_process | transmembrane transport |
| C | 0004673 | molecular_function | protein histidine kinase activity |
| C | 0016791 | molecular_function | phosphatase activity |
| D | 0004673 | molecular_function | protein histidine kinase activity |
| D | 0016791 | molecular_function | phosphatase activity |