Current Protein Identity：P33672
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Difference tags compare only the current result set; every original PDB and assembly record remains separate.
Related-Structure Differences
Each row represents one biological assembly in one PDB entry; multiple monomers of the same protein are listed separately.
| PDB Entry | Assembly / Oligomeric State | Construct | Mutations and Modifications | Ligands, Ions and Non-polymers | Experimental Method | Experimental Conditions | Structure Quality |
|---|---|---|---|---|---|---|---|
| 1IRU Crystal Structure of the mammalian 20S proteasome at 2.75 A resolution Deposited 2001-10-24 | Assembly 1 Protein heterocomplex Heteromer；Protein × 28 PDB declaration: 28-meric（28） Consistent with protein count |
Chain J
1–192（192 aa）
Chain X
1–192（192 aa）
|
Not recorded | MG MAGNESIUM ION × 30 | X-RAY DIFFRACTION |
X-ray crystallization conditions
VAPOR DIFFUSION, HANGING DROP；pH 6.5；293 K；MPD, Mg acetate, Na cacodylate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
|
Resolution 2.75 Å R-free 0.294 |
| 7DR6 PA28alpha-beta in complex with immunoproteasome Deposited 2020-12-26 | Assembly 1 Protein heterocomplex Heteromer；Protein × 35 PDB declaration: 35-meric（35） Consistent with protein count |
Chain H
1–205（205 aa）
Chain S
1–205（205 aa）
|
Not recorded | No recorded non-water small molecule | ELECTRON MICROSCOPY |
cryo-EM buffer
pH 7.4
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 4.10 Å |
| 7DR7 bovine 20S immunoproteasome Deposited 2020-12-26 | Assembly 1 Protein heterocomplex Heteromer；Protein × 28 PDB declaration: 28-meric（28） Consistent with protein count |
Chain H
1–205（205 aa）
Chain S
1–205（205 aa）
|
Not recorded | No recorded non-water small molecule | ELECTRON MICROSCOPY |
cryo-EM buffer
pH 7.4
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.30 Å |
| 7DRW Bovine 20S immunoproteasome in complex with two human PA28alpha-beta activators Deposited 2020-12-29 | Assembly 1 Protein heterocomplex Heteromer；Protein × 42 PDB declaration: 42-meric（42） Consistent with protein count |
Chain S
1–205（205 aa）
Chain k
1–205（205 aa）
|
Not recorded | No recorded non-water small molecule | ELECTRON MICROSCOPY |
cryo-EM buffer
pH 7.4
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 4.20 Å |
| 8AZK Bovine 20S proteasome, untreated Deposited 2022-09-06 | Assembly 1 Protein heterocomplex Heteromer；Protein × 28 PDB declaration: 28-meric（28） Consistent with protein count |
Chain J
1–205（205 aa）
Chain X
1–205（205 aa）
|
Not recorded | No recorded non-water small molecule | ELECTRON MICROSCOPY |
cryo-EM buffer
pH 7.5
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.10 Å |
| 8FZ5 The PI31-free Bovine 20S proteasome Deposited 2023-01-27 | Assembly 1 Protein heterocomplex Heteromer；Protein × 28 PDB declaration: 28-meric（28） Consistent with protein count |
Chain J
1–205（205 aa）
Chain X
1–205（205 aa）
|
Not recorded | No recorded non-water small molecule | ELECTRON MICROSCOPY |
cryo-EM buffer
pH 7.5；20 mM Tris, pH 7.5, 5 mM MgCl2, 100 mM KCl, 1mM DTT
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 2.23 Å |
| 8FZ6 The human PI31 complexed with bovine 20S proteasome Deposited 2023-01-27 | Assembly 1 Protein heterocomplex Heteromer；Protein × 30 PDB declaration: 30-meric（30） Consistent with protein count |
Chain J
1–205（205 aa）
Chain X
1–205（205 aa）
|
Not recorded | No recorded non-water small molecule | ELECTRON MICROSCOPY |
cryo-EM buffer
pH 7.5；20 mM Tris, pH 7.5, 5 mM MgCl2, 100 mM KCl, 1mM DTT
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 2.54 Å |