| Chain | GOid | namespace | contents |
| A | 0003824 | molecular_function | catalytic activity |
| A | 0004122 | molecular_function | cystathionine beta-synthase activity |
| A | 0005515 | molecular_function | protein binding |
| A | 0005634 | cellular_component | nucleus |
| A | 0005737 | cellular_component | cytoplasm |
| A | 0005829 | cellular_component | cytosol |
| A | 0006534 | biological_process | cysteine metabolic process |
| A | 0006535 | biological_process | L-cysteine biosynthetic process from L-serine |
| A | 0006563 | biological_process | L-serine metabolic process |
| A | 0006565 | biological_process | L-serine catabolic process |
| A | 0008652 | biological_process | amino acid biosynthetic process |
| A | 0016829 | molecular_function | lyase activity |
| A | 0019343 | biological_process | L-cysteine biosynthetic process via L-cystathionine |
| A | 0019344 | biological_process | L-cysteine biosynthetic process |
| A | 0019346 | biological_process | transsulfuration |
| A | 0019448 | biological_process | L-cysteine catabolic process |
| A | 0019825 | molecular_function | oxygen binding |
| A | 0019899 | molecular_function | enzyme binding |
| A | 0020037 | molecular_function | heme binding |
| A | 0030170 | molecular_function | pyridoxal phosphate binding |
| A | 0031625 | molecular_function | ubiquitin protein ligase binding |
| A | 0031667 | biological_process | response to nutrient levels |
| A | 0042262 | biological_process | DNA protection |
| A | 0042802 | molecular_function | identical protein binding |
| A | 0042803 | molecular_function | protein homodimerization activity |
| A | 0043066 | biological_process | negative regulation of apoptotic process |
| A | 0043418 | biological_process | L-homocysteine catabolic process |
| A | 0044272 | biological_process | sulfur compound biosynthetic process |
| A | 0046872 | molecular_function | metal ion binding |
| A | 0050421 | molecular_function | nitrite reductase (NO-forming) activity |
| A | 0050667 | biological_process | homocysteine metabolic process |
| A | 0070025 | molecular_function | carbon monoxide binding |
| A | 0070026 | molecular_function | nitric oxide binding |
| A | 0070814 | biological_process | hydrogen sulfide biosynthetic process |
| A | 0071456 | biological_process | cellular response to hypoxia |
| A | 0072341 | molecular_function | modified amino acid binding |
| A | 1904047 | molecular_function | S-adenosyl-L-methionine binding |
| B | 0003824 | molecular_function | catalytic activity |
| B | 0004122 | molecular_function | cystathionine beta-synthase activity |
| B | 0005515 | molecular_function | protein binding |
| B | 0005634 | cellular_component | nucleus |
| B | 0005737 | cellular_component | cytoplasm |
| B | 0005829 | cellular_component | cytosol |
| B | 0006534 | biological_process | cysteine metabolic process |
| B | 0006535 | biological_process | L-cysteine biosynthetic process from L-serine |
| B | 0006563 | biological_process | L-serine metabolic process |
| B | 0006565 | biological_process | L-serine catabolic process |
| B | 0008652 | biological_process | amino acid biosynthetic process |
| B | 0016829 | molecular_function | lyase activity |
| B | 0019343 | biological_process | L-cysteine biosynthetic process via L-cystathionine |
| B | 0019344 | biological_process | L-cysteine biosynthetic process |
| B | 0019346 | biological_process | transsulfuration |
| B | 0019448 | biological_process | L-cysteine catabolic process |
| B | 0019825 | molecular_function | oxygen binding |
| B | 0019899 | molecular_function | enzyme binding |
| B | 0020037 | molecular_function | heme binding |
| B | 0030170 | molecular_function | pyridoxal phosphate binding |
| B | 0031625 | molecular_function | ubiquitin protein ligase binding |
| B | 0031667 | biological_process | response to nutrient levels |
| B | 0042262 | biological_process | DNA protection |
| B | 0042802 | molecular_function | identical protein binding |
| B | 0042803 | molecular_function | protein homodimerization activity |
| B | 0043066 | biological_process | negative regulation of apoptotic process |
| B | 0043418 | biological_process | L-homocysteine catabolic process |
| B | 0044272 | biological_process | sulfur compound biosynthetic process |
| B | 0046872 | molecular_function | metal ion binding |
| B | 0050421 | molecular_function | nitrite reductase (NO-forming) activity |
| B | 0050667 | biological_process | homocysteine metabolic process |
| B | 0070025 | molecular_function | carbon monoxide binding |
| B | 0070026 | molecular_function | nitric oxide binding |
| B | 0070814 | biological_process | hydrogen sulfide biosynthetic process |
| B | 0071456 | biological_process | cellular response to hypoxia |
| B | 0072341 | molecular_function | modified amino acid binding |
| B | 1904047 | molecular_function | S-adenosyl-L-methionine binding |
