Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0042799 | molecular_function | histone H4K20 methyltransferase activity |
| B | 0042799 | molecular_function | histone H4K20 methyltransferase activity |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ZN A 400 |
| Chain | Residue |
| A | CYS267 |
| A | CYS311 |
| A | CYS313 |
| A | CYS316 |
| site_id | AC2 |
| Number of Residues | 18 |
| Details | BINDING SITE FOR RESIDUE SAM A 500 |
| Chain | Residue |
| A | ALA202 |
| A | PHE242 |
| A | ALA261 |
| A | ILE263 |
| A | ASN264 |
| A | HIS265 |
| A | TYR299 |
| A | PHE304 |
| A | CYS311 |
| A | GLU312 |
| A | GOL1327 |
| A | HOH2019 |
| A | HOH2050 |
| A | HIS90 |
| A | TYR195 |
| A | SER197 |
| A | GLU198 |
| A | GLY201 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE ZN B 400 |
| Chain | Residue |
| B | CYS267 |
| B | CYS311 |
| B | CYS313 |
| B | CYS316 |
| site_id | AC4 |
| Number of Residues | 17 |
| Details | BINDING SITE FOR RESIDUE SAM B 500 |
| Chain | Residue |
| B | HIS90 |
| B | TYR195 |
| B | SER197 |
| B | GLU198 |
| B | GLY201 |
| B | ALA202 |
| B | PHE242 |
| B | ALA261 |
| B | ILE263 |
| B | ASN264 |
| B | HIS265 |
| B | TYR299 |
| B | PHE304 |
| B | CYS311 |
| B | GLU312 |
| B | CYS313 |
| B | HOH2014 |
| site_id | AC5 |
| Number of Residues | 9 |
| Details | BINDING SITE FOR RESIDUE GOL A 1327 |
| Chain | Residue |
| A | SER243 |
| A | MET245 |
| A | TRP256 |
| A | ALA260 |
| A | ALA261 |
| A | ILE263 |
| A | PHE273 |
| A | SAM500 |
| A | HOH2095 |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| A | HIS90 | |
| A | CYS316 | |
| B | HIS90 | |
| B | TYR195 | |
| B | ALA202 | |
| B | ARG249 | |
| B | ASN264 | |
| B | CYS267 | |
| B | CYS311 | |
| B | GLU312 | |
| B | CYS313 | |
| A | TYR195 | |
| B | CYS316 | |
| A | ALA202 | |
| A | ARG249 | |
| A | ASN264 | |
| A | CYS267 | |
| A | CYS311 | |
| A | GLU312 | |
| A | CYS313 | |
