| Chain | GOid | namespace | contents |
| A | 0000096 | biological_process | sulfur amino acid metabolic process |
| A | 0003962 | molecular_function | cystathionine gamma-synthase activity |
| A | 0004123 | molecular_function | cystathionine gamma-lyase activity |
| A | 0005737 | cellular_component | cytoplasm |
| A | 0016846 | molecular_function | carbon-sulfur lyase activity |
| A | 0019343 | biological_process | cysteine biosynthetic process via cystathionine |
| A | 0019346 | biological_process | transsulfuration |
| A | 0030170 | molecular_function | pyridoxal phosphate binding |
| B | 0000096 | biological_process | sulfur amino acid metabolic process |
| B | 0003962 | molecular_function | cystathionine gamma-synthase activity |
| B | 0004123 | molecular_function | cystathionine gamma-lyase activity |
| B | 0005737 | cellular_component | cytoplasm |
| B | 0016846 | molecular_function | carbon-sulfur lyase activity |
| B | 0019343 | biological_process | cysteine biosynthetic process via cystathionine |
| B | 0019346 | biological_process | transsulfuration |
| B | 0030170 | molecular_function | pyridoxal phosphate binding |
| C | 0000096 | biological_process | sulfur amino acid metabolic process |
| C | 0003962 | molecular_function | cystathionine gamma-synthase activity |
| C | 0004123 | molecular_function | cystathionine gamma-lyase activity |
| C | 0005737 | cellular_component | cytoplasm |
| C | 0016846 | molecular_function | carbon-sulfur lyase activity |
| C | 0019343 | biological_process | cysteine biosynthetic process via cystathionine |
| C | 0019346 | biological_process | transsulfuration |
| C | 0030170 | molecular_function | pyridoxal phosphate binding |
| D | 0000096 | biological_process | sulfur amino acid metabolic process |
| D | 0003962 | molecular_function | cystathionine gamma-synthase activity |
| D | 0004123 | molecular_function | cystathionine gamma-lyase activity |
| D | 0005737 | cellular_component | cytoplasm |
| D | 0016846 | molecular_function | carbon-sulfur lyase activity |
| D | 0019343 | biological_process | cysteine biosynthetic process via cystathionine |
| D | 0019346 | biological_process | transsulfuration |
| D | 0030170 | molecular_function | pyridoxal phosphate binding |