6IK8
Crystal structure of tomato beta-galactosidase (TBG) 4 in complex with beta-1,6-galactobiose
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B (B, A) | Beta-galactosidase | polymer | 718 | 79726.9 | 2 | UniProt (O81100) Pfam (PF01301) Pfam (PF17834) Pfam (PF21467) | Solanum lycopersicum (Tomato) | |
| 2 | C, E (C, E) | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | branched | 424.4 | 2 | In PDB GlyTouCan (G42666HT) | |||
| 3 | D, F (D, F) | beta-D-galactopyranose-(1-6)-beta-D-galactopyranose | branched | 342.3 | 2 | In PDB GlyTouCan (G08539FO) | |||
| 4 | G, H (B, A) | 2-acetamido-2-deoxy-beta-D-glucopyranose | non-polymer | 221.2 | 2 | Chemie (NAG) | |||
| 5 | I (A) | beta-D-galactopyranose | non-polymer | 180.2 | 1 | Chemie (GAL) | |||
| 6 | J, K (B, A) | water | water | 18.0 | 254 | Chemie (HOH) |
Sequence modifications
B, A: 24 - 724 (UniProt: O81100)
| PDB | External Database | Details |
|---|---|---|
| Glu 18 | - | expression tag |
| Ala 19 | - | expression tag |
| Glu 20 | - | expression tag |
| Ala 21 | - | expression tag |
| Glu 22 | - | expression tag |
| Phe 23 | - | expression tag |
| Ala 181 | Glu 181 | engineered mutation |
| Ser 725 | - | expression tag |
| Ala 726 | - | expression tag |
| Ala 727 | - | expression tag |
| Ala 728 | - | expression tag |
| Ala 729 | - | expression tag |
| Ser 730 | - | expression tag |
| Phe 731 | - | expression tag |
| Leu 732 | - | expression tag |
| Glu 733 | - | expression tag |
| Gln 734 | - | expression tag |
| Lys 735 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 |
| Total formula weight | 159453.8 | |
| Branched | Number of molecules | 4 |
| Total formula weight | 1533.4 | |
| Non-Polymers* | Number of molecules | 3 |
| Total formula weight | 622.6 | |
| All* | Total formula weight | 161609.8 |
