3OVB
How the CCA-adding Enzyme Selects Adenine over Cytosine in Position 76 of tRNA
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, B | CCA-Adding Enzyme | polymer | 441 | 51906.7 | 2 | UniProt (O28126) Pfam (PF01909) Pfam (PF09249) Pfam (PF21133) In PDB | Archaeoglobus fulgidus | tRNA nucleotidyltransferase, tRNA adenylyl-/cytidylyl- transferase, tRNA CCA-pyrophosphorylase, tRNA-NT |
| 2 | C, D | RNA (35-MER) | polymer | 35 | 11166.7 | 2 | tRNA nucleotidyltransferase, tRNA adenylyl-/cytidylyl- transferase, tRNA CCA-pyrophosphorylase, tRNA-NT | ||
| 3 | A, B, C | ADENOSINE-5'-TRIPHOSPHATE | non-polymer | 507.2 | 3 | Chemie (ATP) | |||
| 4 | A, B | SULFATE ION | non-polymer | 96.1 | 2 | Chemie (SO4) | |||
| 5 | A, B | 1,2-ETHANEDIOL | non-polymer | 62.1 | 5 | Chemie (EDO) | |||
| 6 | A, B | MAGNESIUM ION | non-polymer | 24.3 | 2 | Chemie (MG) | |||
| 7 | B, C | PYROPHOSPHATE 2- | non-polymer | 176.0 | 2 | Chemie (POP) | |||
| 8 | water | water | 18.0 | 475 | Chemie (HOH) |
Sequence modifications
A, B: 1 - 437 (UniProt: O28126)
| PDB | External Database | Details |
|---|---|---|
| Cys 438 | - | expression tag |
| Cys 439 | - | expression tag |
| Cys 440 | - | expression tag |
| Gln 441 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 126146.7 | |
| Non-Polymers* | Number of molecules | 14 |
| Total formula weight | 2424.5 | |
| All* | Total formula weight | 128571.2 |
