1IRU
Crystal Structure of the mammalian 20S proteasome at 2.75 A resolution
Entity
| Entity ID | Chain ID | Description | Type | Chain length | Formula weight | Number of molecules | DB Name (Accession) | Biological source | Descriptive keywords |
| 1 | A, O (A, O) | 20S proteasome | polymer | 246 | 27432.5 | 2 | Pfam (PF10584) Pfam (PF00227) UniProt (by SIFTS) (Q2YDE4) | Bos taurus (cattle) | |
| 2 | B, P (B, P) | 20S proteasome | polymer | 233 | 25796.3 | 2 | Pfam (PF10584) Pfam (PF00227) UniProt (by SIFTS) (Q3T0Y5) | Bos taurus (cattle) | |
| 3 | C, Q (C, Q) | 20S proteasome | polymer | 261 | 29525.8 | 2 | Pfam (PF10584) Pfam (PF00227) UniProt (by SIFTS) (Q3ZCK9) | Bos taurus (cattle) | |
| 4 | D, R (D, R) | 20S proteasome | polymer | 248 | 27929.9 | 2 | Pfam (PF00227) Pfam (PF10584) UniProt (by SIFTS) (Q3ZBG0) | Bos taurus (cattle) | |
| 5 | E, S (E, S) | 20S proteasome | polymer | 241 | 26494.0 | 2 | Pfam (PF10584) Pfam (PF00227) UniProt (by SIFTS) (Q5E987) | Bos taurus (cattle) | |
| 6 | F, T (F, T) | 20S proteasome | polymer | 263 | 29595.6 | 2 | Pfam (PF10584) Pfam (PF00227) UniProt (by SIFTS) (Q3T0X5) | Bos taurus (cattle) | |
| 7 | G, U (G, U) | 20S proteasome | polymer | 254 | 28338.1 | 2 | Pfam (PF10584) Pfam (PF00227) UniProt (by SIFTS) (Q58DU5) | Bos taurus (cattle) | |
| 8 | H, V (H, V) | 20S proteasome | polymer | 205 | 21921.8 | 2 | Pfam (PF00227) UniProt (by SIFTS) (Q3MHN0) | Bos taurus (cattle) | |
| 9 | I, W (I, W) | 20S proteasome | polymer | 234 | 25351.0 | 2 | Pfam (PF00227) Pfam (PF12465) UniProt (by SIFTS) (Q2TBP0) | Bos taurus (cattle) | |
| 10 | J, X (J, X) | 20S proteasome | polymer | 205 | 22954.9 | 2 | UniProt (P33672) Pfam (PF00227) | Bos taurus (cattle) | |
| 11 | K, Y (K, Y) | 20S proteasome | polymer | 201 | 22864.3 | 2 | Pfam (PF00227) UniProt (by SIFTS) (Q5E9K0) | Bos taurus (cattle) | |
| 12 | L, Z (L, Z) | 20S proteasome | polymer | 204 | 22484.4 | 2 | Pfam (PF00227) UniProt (by SIFTS) (Q32KL2) | Bos taurus (cattle) | |
| 13 | AA, M (M, 1) | 20S proteasome | polymer | 213 | 23579.0 | 2 | Pfam (PF00227) UniProt (by SIFTS) (Q2TBX6) | Bos taurus (cattle) | |
| 14 | BA, N (N, 2) | 20S proteasome | polymer | 219 | 24402.7 | 2 | Pfam (PF00227) UniProt (by SIFTS) (Q3T108) | Bos taurus (cattle) | |
| 15 | AB, BB, CA, CB, DA... (X, A, B, Y, C...) | MAGNESIUM ION | non-polymer | 24.3 | 30 | Chemie (MG) | |||
| 16 | AC, BC, CC, DC, EC... (W, X, Y, Z, 1...) | water | water | 18.0 | 165 | Chemie (HOH) |
Sequence viewer
Contents of the asymmetric unit
| Polymers | Number of chains | 28 |
| Total formula weight | 717340.6 | |
| Non-Polymers* | Number of molecules | 30 |
| Total formula weight | 729.1 | |
| All* | Total formula weight | 718069.7 |
