Research workbench
Ternary structure of the large fragment of taq DNA polymerase bound to an abasic site and a ddttp
Analyse Ternary structure of the large fragment of taq DNA polymerase bound to an… in the GL1X research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides, crosslinks and neighbours on the 3D structure.
- PDB
- 3RRH
- Type
- protein + DNA
- Length
- 564 residues
- Chains
- 3
- Method
- x-ray diffraction
- Collection
- MolNFT v1 / PDB
- Contract
- 0xDE3723766Bc32dcACD03C17BaA400A7B36837Eba
- Owner
- 0x3396CDB397284571d12822B4ae1189a8E22AAAAA
- Molecule
- DNA polymerase I, thermostable; (5'-D(*GP*AP*CP*CP*AP*CP*GP*GP*CP*GP*CP*(2DT))-3')…
- EC
- 2.7.7.7
- UniProt
- P19821
- Ligands
- TTP, MG
- Pockets
- 6 · best druggability 0.71
Structure
x-ray diffraction · 3 distinct chains · 54% helix, 13% strand (DSSP).
| Chain | Molecule | Type | Residues | Secondary structure | UniProt |
|---|---|---|---|---|---|
| A | DNA polymerase I, thermostable (EC 2.7.7.7) | protein | 538 | 54% helix, 13% strand | P19821 |
| B | (5'-D(*GP*AP*CP*CP*AP*CP*GP*GP*CP*GP*CP*(2DT))-3') | dna | 12 | — | — |
| C | (5'-D(*AP*AP*AP*(3DR)P*AP*GP*CP*GP*CP*CP*GP*TP*GP*GP*TP*C)- 3') | dna | 14 | — | — |
Ligands and binding sites
- TTP · Thymidine-5'-triphosphate · ligand · chains A, B
- MG · Magnesium ion · metal · 2 copies · chains B, C
- GOL · Glycerol · additive · 4 copies · chains A, C, B
- PGE · Triethylene glycol · additive · 2 copies · chains A, B
- ACT · Acetate ion · additive · chains A
Binding sites are the residues within 4.5 Å of a ligand's heavy atoms.
Pockets
6 pockets found on a 1 Å grid, 3 with a druggability of 0.5 or more.
| Volume (ų) | Druggability | Buriedness | Lining residues | Inside | |
|---|---|---|---|---|---|
| 1 | 212 | 0.71 | 0.88 | 26 | empty |
| 2 | 1154 | 0.70 | 0.74 | 72 | TTP, MG, PGE |
| 3 | 296 | 0.62 | 0.80 | 37 | empty |
| 4 | 210 | 0.50 | 0.76 | 22 | empty |
| 5 | 68 | 0.41 | 0.80 | 17 | GOL, PGE |
Interfaces
3 interfaces between chains.
- A–C · 1111 Ų buried · 23 hydrogen bonds · protein-nucleic
- A–B · 819 Ų buried · 25 hydrogen bonds · protein-nucleic
- B–C · 552 Ų buried · 48 hydrogen bonds · nucleic-nucleic
Modifications
Observed in the structure: 2 modified (nucleotide modification).
Compared structures
- 3RRH · Ternary Structure of the large fragment of Taq DNA polymerase bound to an abasic site and… · the same entry in another collection · chain A against A, TM-score 1.00
- P19821 · AlphaFold monomer V2.0 prediction for DNA polymerase I, thermostable (P19821) · a predicted model of the same protein · chain A against A, TM-score 0.99
Analyse
- Open in the research workbench: secondary structure, accessibility, pockets, interfaces, conservation, variants, modifications, peptides and crosslinks on the 3D structure
- Every structure of UniProt P19821
- Elsewhere: RCSB PDB 3RRH · PDBe 3RRH · UniProt P19821
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