3OVS
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 | 51905.7 | 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 (34-MER) | polymer | 34 | 10837.4 | 2 | tRNA nucleotidyltransferase, tRNA adenylyl-/cytidylyl- transferase, tRNA CCA-pyrophosphorylase, tRNA-NT | ||
| 3 | A, B | CYTIDINE-5'-TRIPHOSPHATE | non-polymer | 483.2 | 2 | Chemie (CTP) | |||
| 4 | A, B | SULFATE ION | non-polymer | 96.1 | 6 | Chemie (SO4) | |||
| 5 | A, B | 1,2-ETHANEDIOL | non-polymer | 62.1 | 3 | Chemie (EDO) | |||
| 6 | A | CALCIUM ION | non-polymer | 40.1 | 1 | Chemie (CA) | |||
| 7 | water | water | 18.0 | 96 | Chemie (HOH) |
Sequence modifications
A, B: 1 - 437 (UniProt: O28126)
| PDB | External Database | Details |
|---|---|---|
| Val 438 | - | expression tag |
| Cys 439 | - | expression tag |
| Cys 440 | - | expression tag |
| Met 441 | - | expression tag |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 4 |
| Total formula weight | 125486.4 | |
| Non-Polymers* | Number of molecules | 12 |
| Total formula weight | 1769.0 | |
| All* | Total formula weight | 127255.4 |
