Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0005198 | molecular_function | structural molecule activity |
| A | 0005923 | cellular_component | bicellular tight junction |
| A | 0016020 | cellular_component | membrane |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 13 |
| Details | binding site for residue OLC A 201 |
| Chain | Residue |
| A | LEU17 |
| A | ARG79 |
| A | PHE90 |
| A | MSE97 |
| A | HOH321 |
| A | LEU18 |
| A | GLY21 |
| A | LEU24 |
| A | SER25 |
| A | TRP49 |
| A | TYR50 |
| A | ASP64 |
| A | PHE65 |
| site_id | AC2 |
| Number of Residues | 7 |
| Details | binding site for residue OLC A 202 |
| Chain | Residue |
| A | THR7 |
| A | PHE11 |
| A | MSE19 |
| A | LEU22 |
| A | ASN26 |
| A | LEU164 |
| A | HOH303 |
Functional Information from PROSITE/UniProt
| site_id | PS01346 |
| Number of Residues | 16 |
| Details | CLAUDIN Claudin family signature. NLWysCatdslgvs.NC |
| Chain | Residue | Details |
| A | ASN47-CYS62 | |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 92 |
| Details | TRANSMEM: Helical |
| Chain | Residue | Details |
| A | SER2-LEU24 | |
| A | VAL75-GLY99 | |
| A | LEU116-VAL140 | |
| A | PRO160-THR182 | |
| Chain | Residue | Details |
| A | SER25-TYR74 | |
| A | ASN141-GLY159 | |
| Chain | Residue | Details |
| A | LEU100-LYS115 | |
| site_id | SWS_FT_FI4 |
| Number of Residues | 2 |
| Details | SITE: Important for Na(+)-selective paracellular ion transport => ECO:0000250 |
| Chain | Residue | Details |
| A | ASP55 | |
| A | ASP64 | |
| site_id | SWS_FT_FI5 |
| Number of Residues | 1 |
| Details | SITE: Important for the formation of tight-junction strand-like structures |
| Chain | Residue | Details |
| A | MSE68 | |
| Chain | Residue | Details |
| A | SER111 | |
