Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0004461 | molecular_function | lactose synthase activity |
| A | 0005509 | molecular_function | calcium ion binding |
| A | 0005989 | biological_process | lactose biosynthetic process |
| B | 0004461 | molecular_function | lactose synthase activity |
| B | 0005509 | molecular_function | calcium ion binding |
| B | 0005989 | biological_process | lactose biosynthetic process |
| C | 0005975 | biological_process | carbohydrate metabolic process |
| C | 0016757 | molecular_function | glycosyltransferase activity |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE CA A 201 |
| Chain | Residue |
| A | LYS80 |
| A | ASP83 |
| A | ASP85 |
| A | ASP88 |
| A | ASP89 |
| A | HOH302 |
| site_id | AC2 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 C 401 |
| Chain | Residue |
| C | ARG339 |
| C | ARG342 |
| C | GLU144 |
| C | PHE145 |
| C | ASN146 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE CA B 201 |
| Chain | Residue |
| B | LYS80 |
| B | PHE81 |
| B | ASP83 |
| B | ASP85 |
| B | ASP88 |
| B | ASP89 |
Functional Information from PROSITE/UniProt
| site_id | PS00128 |
| Number of Residues | 19 |
| Details | GLYCOSYL_HYDROL_F22_1 Glycosyl hydrolases family 22 (GH22) domain signature. CdisCdkFlddDItddimC |
| Chain | Residue | Details |
| A | CYS74-CYS92 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 5 |
| Details | BINDING: |
| Chain | Residue | Details |
| C | PRO183 | |
| C | VAL249 | |
| C | ASP250 | |
| C | GLY312 | |
| C | HIS343 | |
| B | GLN40 | |
| B | LEU82 | |
| B | ASP84 | |
| site_id | SWS_FT_FI2 |
| Number of Residues | 1 |
| Details | BINDING: BINDING => ECO:0000250 |
| Chain | Residue | Details |
| C | PHE222 | |
| A | GLU117 | |
| B | GLU50 | |
| B | GLU117 | |
| Chain | Residue | Details |
| C | TRP310 | |
| B | ASP89 | |
| A | ASP83 | |
| A | ASP85 | |
| A | ASP88 | |
| A | ASP89 | |
| B | LYS80 | |
| B | ASP83 | |
| B | ASP85 | |
| B | ASP88 | |
| Chain | Residue | Details |
| C | ARG355 | |
| B | ASN46 | |
| site_id | SWS_FT_FI5 |
| Number of Residues | 2 |
| Details | CARBOHYD: N-linked (GlcNAc...) asparagine; atypical; partial => ECO:0000269|Ref.9 |
| Chain | Residue | Details |
| A | ASN72 | |
| B | ASN72 | |
