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Protein Structures and Oligomeric States

Enter a protein name, UniProt accession or PDB ID. Name searches ask you to confirm the protein identity before related structures are queried.

Current Protein Identity：A7ZSK2 New Search
37PDB entries
37Biological assembly
37chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion Different experimental conditions Different structure-quality metrics

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
11BQ Escherichia coli 70S ribosome containing an evolved 16S rRNA (EC-S3.5) Deposited 2026-02-16 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 53-meric（53） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) ZN ZINC ION × 2 MG MAGNESIUM ION × 307 SPD SPERMIDINE × 14 SPM SPERMINE × 1 C CYTIDINE-5'-MONOPHOSPHATE × 1 G GUANOSINE-5'-MONOPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
11DG Chimeric Escherichia coli 70S ribosome containing an evolved Vibrio cholerae 16S rRNA (VC-S4.4) Deposited 2026-02-18 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 53-meric（53） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) ZN ZINC ION × 2 MG MAGNESIUM ION × 272 SPD SPERMIDINE × 14 SPM SPERMINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
11EL Chimeric Escherichia coli 70S ribosome containing an evolved 16S rRNA from Vibrio cholerae (VC-ST) Deposited 2026-02-19 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 53-meric（53） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) ZN ZINC ION × 2 MG MAGNESIUM ION × 308 SPD SPERMIDINE × 16 SPM SPERMINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9D89 E. coli 50S ribosomal subunit in complex with PrAMP rumicidin-2 (focused refinement) Deposited 2024-08-19 Assembly 1 Protein–RNA Heteromer；Protein × 29 PDB declaration: 31-meric（31） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) ZN ZINC ION × 1 MG MAGNESIUM ION × 204 K POTASSIUM ION × 93 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 1.95 Å
9SYH E. coli 70S ribosome from deltaRlmE strain Deposited 2025-10-12 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 56-meric（56） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) K POTASSIUM ION × 148 MG MAGNESIUM ION × 351 SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 6 PUT 1,4-DIAMINOBUTANE × 9 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 1.89 Å
9T0Y E. coli 70S ribosome from delta-9 strain Deposited 2025-10-20 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 56-meric（56） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) K POTASSIUM ION × 143 MG MAGNESIUM ION × 337 SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 6 PUT 1,4-DIAMINOBUTANE × 9 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 1.87 Å
9T19 E. coli 70S ribosome from delta-RlmE strain, PTC class 0 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 99 K POTASSIUM ION × 42 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.41 Å
9T1A E. coli 70S ribosome from delta-RlmE strain, PTC class 1 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 102 K POTASSIUM ION × 43 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.39 Å
9T1B E. coli 70S ribosome from delta-RlmE strain, PTC class 2 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 102 K POTASSIUM ION × 43 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.32 Å
9T1C E. coli 70S ribosome from delta-RlmE strain, PTC class 3 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.07 Å
9T1E E. coli 70S ribosome from delta-RlmE strain, PTC class 4 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 43 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.28 Å
9T1F E. coli 70S ribosome from delta-RlmE strain, PTC class 5 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 102 K POTASSIUM ION × 40 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.32 Å
9T1G E. coli 70S ribosome from delta-RlmE strain, PTC class 6 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 100 K POTASSIUM ION × 42 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.29 Å
9T1H E. coli 70S ribosome from delta-RlmE strain, PTC class 7 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 102 K POTASSIUM ION × 43 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.33 Å
9T1I E. coli 70S ribosome from delta-RlmE strain, PTC class 8 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 102 K POTASSIUM ION × 43 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.30 Å
9T1J E. coli 70S ribosome from delta-RlmE strain, PTC class 9 Deposited 2025-10-21 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 102 K POTASSIUM ION × 43 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.23 Å
9T2J E. coli 70S ribosome from delta-9 strain, PTC class 0 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 12-meric（12） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 39 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.02 Å
9T2K E. coli 70S ribosome from delta-9 strain, PTC class 1 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 40 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.06 Å
9T2L E. coli 70S ribosome from delta-9 strain, PTC class 2 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 40 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.07 Å
9T2M E. coli 70S ribosome from delta-9 strain, PTC class 3 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 39 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.06 Å
9T2N E. coli 70S ribosome from delta-9 strain, PTC class 4 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 36 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.06 Å
9T2O E. coli 70S ribosome from delta-9 strain, PTC class 5 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 39 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.07 Å
9T2P E. coli 70S ribosome from delta-9 strain, PTC class 6 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 36 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.08 Å
9T2Q E. coli 70S ribosome from delta-9 strain, PTC class 7 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 40 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.08 Å
9T2R E. coli 70S ribosome from delta-9 strain, PTC class 8 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 101 K POTASSIUM ION × 40 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.22 Å
9T2S E. coli 70S ribosome from delta-9 strain, PTC class 9 Deposited 2025-10-23 Assembly 1 Protein–RNA Heteromer；Protein × 10 PDB declaration: 14-meric（14） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 PUT 1,4-DIAMINOBUTANE × 1 MG MAGNESIUM ION × 100 K POTASSIUM ION × 39 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.07 Å
9T6M E. coli 70S ribosome from delta-10 strain Deposited 2025-11-07 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 56-meric（56） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) K POTASSIUM ION × 132 MG MAGNESIUM ION × 316 SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 5 PUT 1,4-DIAMINOBUTANE × 8 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 1.87 Å
9T8K E. coli 70S ribosome from delta-10 strain, PTC class 0 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 11-meric（11） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.18 Å
9T8L E. coli 70S ribosome from delta-10 strain, PTC class 1 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 11-meric（11） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.21 Å
9T8M E. coli 70S ribosome from delta-10 strain, PTC class 2 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 11-meric（11） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.20 Å
9T8N E. coli 70S ribosome from delta-10 strain, PTC class 3 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 33 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.22 Å
9T8O E. coli 70S ribosome from delta-10 strain, PTC class 4 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 11-meric（11） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.19 Å
9T8P E. coli 70S ribosome from delta-10 strain, PTC class 5 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 12-meric（12） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.22 Å
9T8Q E. coli 70S ribosome from delta-10 strain, PTC class 6 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 12-meric（12） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.23 Å
9T8R E. coli 70S ribosome from delta-10 strain, PTC class 7 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 12-meric（12） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.22 Å
9T8S E. coli 70S ribosome from delta-10 strain, PTC class 8 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 12-meric（12） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 2 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.22 Å
9T8T E. coli 70S ribosome from delta-10 strain, PTC class 9 Deposited 2025-11-13 Assembly 1 Protein–RNA Heteromer；Protein × 9 PDB declaration: 13-meric（13） Consistent with all polymers
Chain l 1–136（136 aa）
Non-standard monomer：Yes (specific site not provided by mmCIF) SR0 N~1~-(3-azaniumylpropyl)butane-1,4-diaminium × 1 MG MAGNESIUM ION × 34 K POTASSIUM ION × 21 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；HEPES-polymix buffer (pH-7.5)
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.23 Å

This page presents structural evidence recorded in PDB/mmCIF.“No recorded non-water small molecule” does not prove that the experimental sample was ligand-free; experimental conditions belong to the PDB experiment, while ligands and copy counts are shown for each biological assembly.