| BP | GO:0000105 | histidine biosynthetic process | IEP | HCCA |
| MF | GO:0004359 | glutaminase activity | IEP | HCCA |
| MF | GO:0004497 | monooxygenase activity | IEP | HCCA |
| MF | GO:0004518 | nuclease activity | IEP | HCCA |
| MF | GO:0004519 | endonuclease activity | IEP | HCCA |
| MF | GO:0004521 | RNA endonuclease activity | IEP | HCCA |
| MF | GO:0004523 | RNA-DNA hybrid ribonuclease activity | IEP | HCCA |
| MF | GO:0004540 | RNA nuclease activity | IEP | HCCA |
| CC | GO:0005730 | nucleolus | IEP | HCCA |
| BP | GO:0006081 | cellular aldehyde metabolic process | IEP | HCCA |
| BP | GO:0006082 | organic acid metabolic process | IEP | HCCA |
| BP | GO:0006364 | rRNA processing | IEP | HCCA |
| BP | GO:0006520 | amino acid metabolic process | IEP | HCCA |
| BP | GO:0006547 | histidine metabolic process | IEP | HCCA |
| BP | GO:0006766 | vitamin metabolic process | IEP | HCCA |
| BP | GO:0006767 | water-soluble vitamin metabolic process | IEP | HCCA |
| BP | GO:0008652 | amino acid biosynthetic process | IEP | HCCA |
| BP | GO:0009110 | vitamin biosynthetic process | IEP | HCCA |
| BP | GO:0016053 | organic acid biosynthetic process | IEP | HCCA |
| BP | GO:0016072 | rRNA metabolic process | IEP | HCCA |
| MF | GO:0016701 | oxidoreductase activity, acting on single donors with incorporation of molecular oxygen | IEP | HCCA |
| MF | GO:0016703 | oxidoreductase activity, acting on single donors with incorporation of molecular oxygen, incorporation of one atom of oxygen (internal monooxygenases or internal mixed function oxidases) | IEP | HCCA |
| MF | GO:0016787 | hydrolase activity | IEP | HCCA |
| MF | GO:0016810 | hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds | IEP | HCCA |
| MF | GO:0016811 | hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides | IEP | HCCA |
| MF | GO:0016891 | RNA endonuclease activity, producing 5'-phosphomonoesters | IEP | HCCA |
| MF | GO:0016893 | endonuclease activity, active with either ribo- or deoxyribonucleic acids and producing 5'-phosphomonoesters | IEP | HCCA |
| MF | GO:0018580 | nitronate monooxygenase activity | IEP | HCCA |
| BP | GO:0019637 | organophosphate metabolic process | IEP | HCCA |
| BP | GO:0019752 | carboxylic acid metabolic process | IEP | HCCA |
| BP | GO:0034470 | ncRNA processing | IEP | HCCA |
| BP | GO:0034660 | ncRNA metabolic process | IEP | HCCA |
| BP | GO:0042364 | water-soluble vitamin biosynthetic process | IEP | HCCA |
| BP | GO:0042816 | vitamin B6 metabolic process | IEP | HCCA |
| BP | GO:0042819 | vitamin B6 biosynthetic process | IEP | HCCA |
| BP | GO:0042822 | pyridoxal phosphate metabolic process | IEP | HCCA |
| BP | GO:0042823 | pyridoxal phosphate biosynthetic process | IEP | HCCA |
| BP | GO:0043436 | oxoacid metabolic process | IEP | HCCA |
| BP | GO:0044283 | small molecule biosynthetic process | IEP | HCCA |
| BP | GO:0046184 | aldehyde biosynthetic process | IEP | HCCA |
| BP | GO:0046394 | carboxylic acid biosynthetic process | IEP | HCCA |
| BP | GO:0072524 | pyridine-containing compound metabolic process | IEP | HCCA |
| BP | GO:0072525 | pyridine-containing compound biosynthetic process | IEP | HCCA |
| BP | GO:0090407 | organophosphate biosynthetic process | IEP | HCCA |
| BP | GO:1901615 | organic hydroxy compound metabolic process | IEP | HCCA |
| BP | GO:1901617 | organic hydroxy compound biosynthetic process | IEP | HCCA |