Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords | 
| 1 | A, D, G, J (A, B, C, D) | U1 SMALL NUCLEAR RIBONUCLEOPROTEIN A | polymer | 90 | 10451.2 | 4 | UniProt (P09012) Pfam (PF00076) | HOMO SAPIENS (human) | |
| 2 | B, E, H, K (E, F, G, H) | RNA (5'-R(*AP*(A2M)*GP*CP*GP*CP*CP*AP*GP*AP*AP*CP*U)-3') | polymer | 13 | 4177.6 | 4 | |||
| 3 | C, F, I, L (P, Q, R, S) | GLMS RIBOZYME | polymer | 141 | 45624.9 | 4 | |||
| 4 | AA, CA, DA, EA, FA... (R, H, S, E, P...) | MAGNESIUM ION | non-polymer | 24.3 | 16 | Chemie (MG) | |||
| 5 | BA, N, S, W (H, P, Q, G) | 6-O-phosphono-alpha-D-glucopyranose | non-polymer | 260.1 | 4 | Chemie (G6P) | |||
| 6 | GA, HA, IA, JA, KA... (A, P, B, Q, R...) | water | water | 18.0 | 38 | Chemie (HOH) | 
Sequence modifications
A, B, C, D: 7 - 96 (UniProt: P09012)
| PDB | External Database | Details | 
|---|---|---|
| His 31 | Tyr 31 | conflict | 
| Arg 36 | Gln 36 | conflict | 
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 12 | 
| Total formula weight | 241014.7 | |
| Non-Polymers* | Number of molecules | 20 | 
| Total formula weight | 1429.4 | |
| All* | Total formula weight | 242444.1 | 











