| GO | Name |
| GO:0004122 | cystathionine beta-synthase activity |
| GO:0005634 | nucleus |
| GO:0005737 | cytoplasm |
| GO:0005829 | cytosol |
| GO:0006535 | cysteine biosynthetic process from serine |
| GO:0006563 | L-serine metabolic process |
| GO:0006565 | L-serine catabolic process |
| GO:0019343 | cysteine biosynthetic process via cystathionine |
| GO:0019344 | cysteine biosynthetic process |
| GO:0019346 | transsulfuration |
| GO:0019448 | L-cysteine catabolic process |
| GO:0019825 | oxygen binding |
| GO:0019899 | enzyme binding |
| GO:0020037 | heme binding |
| GO:0030170 | pyridoxal phosphate binding |
| GO:0031625 | ubiquitin protein ligase binding |
| GO:0042262 | DNA protection |
| GO:0042802 | identical protein binding |
| GO:0042803 | protein homodimerization activity |
| GO:0043418 | homocysteine catabolic process |
| GO:0046872 | metal ion binding |
| GO:0050421 | nitrite reductase (NO-forming) activity |
| GO:0050667 | homocysteine metabolic process |
| GO:0070025 | carbon monoxide binding |
| GO:0070026 | nitric oxide binding |
| GO:0070814 | hydrogen sulfide biosynthetic process |
| GO:0072341 | modified amino acid binding |
| GO:1904047 | S-adenosyl-L-methionine binding |