2PXE
Variant 4 of Ribonucleoprotein Core of the E. Coli Signal Recognition Particle
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords | 
| 1 | A (B)  | 4.5 S RNA | polymer | 49 | 15885.5 | 1 | |||
| 2 | B (A)  | Signal recognition particle protein | polymer | 102 | 12336.6 | 1 | UniProt (P0AGD7) Pfam (PF02978)  | Escherichia coli | Fifty-four homolog, p48 | 
| 3 | C, D, E, F, G... (B)  | COBALT HEXAMMINE(III) | non-polymer | 161.1 | 7 | Chemie (NCO) | 
Sequence modifications
A: 1 - 82 (UniProt: P0AGD7)
| PDB | External Database | Details | 
|---|---|---|
| Mse 9 | Met 344 | modified residue | 
| Mse 9 | Met 347 | modified residue | 
| Mse 9 | Met 351 | modified residue | 
| Mse 9 | Met 357 | modified residue | 
| Mse 10 | Met 368 | modified residue | 
| Mse 28 | Met 376 | modified residue | 
| Mse 35 | Met 383 | modified residue | 
| Mse 37 | Met 385 | modified residue | 
| Ser 58 | Cys 406 | engineered mutation | 
| Mse 60 | Met 408 | modified residue | 
| Mse 75 | Met 423 | modified residue | 
| Mse 78 | Met 426 | modified residue | 
| Mse 79 | Met 427 | modified residue | 
| Mse 82 | Met 430 | modified residue | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 2 | 
| Total formula weight | 28222.2 | |
| Non-Polymers* | Number of molecules | 7 | 
| Total formula weight | 1127.8 | |
| All* | Total formula weight | 29350.0 | 






