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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：C3SQV2 New Search
43PDB entries
43Biological assembly
43chain/assembly records
Main Difference Dimensions in This Set
Different construct Different assembly state Different ligand/ion Different experimental method 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
10QM E.coli 50S ribosomal subunit bound to compound 48a Deposited 2026-02-01 Assembly 1 Protein–RNA Heteromer；Protein × 29 PDB declaration: 31-meric（31） Consistent with all polymers
Chain b 1–100（100 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 2.49 Å
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 s 1–100（100 aa）
Not recorded 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 s 1–100（100 aa）
Not recorded 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 s 1–100（100 aa）
Not recorded 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
11FV Chimeric Escherichia coli 70S ribosome containing an evolved 16S rRNA from Pseudomonas aeruginosa (PA-S3.3) Deposited 2026-02-21 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 52-meric（52） Consistent with all polymers
Chain b 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 307 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
11GG Chimeric Escherichia coli 70S ribosome containing an evolved 16S rRNA from Pseudomonas aeruginosa (PA-ST) Deposited 2026-02-22 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 52-meric（52） Consistent with all polymers
Chain b 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 307 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.02 Å
4V85 Crystal Structure of Release Factor RF3 Trapped in the GTP State on a Rotated Conformation of the Ribosome. Deposited 2011-06-13 Assembly 1 Protein–RNA Heteromer；Protein × 55 PDB declaration: 59-meric（59） Consistent with all polymers
Chain BX 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 493 GNP PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7；295 K；Tris Ac PH.7.0, 25-35 mM KCL, 6.1% PEG 20000, 1% glycerol, 50mM sucrose, VAPOR DIFFUSION, SITTING DROP, temperature 295K
Resolution 3.20 Å R-free 0.250
8URM E. coli 70S ribosome with unmodified tRNAPro(GGG) bound to slippery P-site CCC-C codon and tRNAVal(UAC) in the A site Deposited 2023-10-26 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 55-meric（55） Consistent with all polymers
Chain T 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 395 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
8URY Escherichia coli transcription-translation coupled complex class B (TTC-B) containing RfaH bound to ops signal, NusA, mRNA with a 30 nt long spacer, and fMet-tRNA in E-site and P-site of the ribosome Deposited 2023-10-27 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain 2 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8UTJ E. coli 70S ribosome with unmodified lys-tRNAPro(GGG) bound to slippery P-site CCC-C codon in the 0 frame Deposited 2023-10-31 Assembly 1 Protein–RNA Heteromer；Protein × 50 PDB declaration: 55-meric（55） Consistent with all polymers
Chain T 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 530 LYS LYSINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.50 Å
8UX8 E. coli 70S ribosome with unmodified Lys-tRNAPro(GGG) bound to slippery P-site CCC-C codon in the +1 mRNA reading frame Deposited 2023-11-09 Assembly 1 Protein–RNA Heteromer；Protein × 50 PDB declaration: 55-meric（55） Consistent with all polymers
Chain T 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 395 LYS LYSINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.60 Å
8V03 E. coli 70S ribosome with unmodified P/E-tRNAPro(GGG) bound to slippery P-site CCC-C codon Deposited 2023-11-16 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain T 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 281 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.00 Å
8VOS Escherichia coli transcription-translation loosely coupled complex (TTC-LC) containing mRNA with a 60 nt long spacer, NusG, NusA, and fMet-tRNAs in E-site and P-site Deposited 2024-01-15 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain 2 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.60 Å
8VUP E. coli 70S ribosome with unmodified tRNAPro(GGG) in the e*/E conformation on a slippery CCC-C codon Deposited 2024-01-29 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain T 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 239 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
9AX7 70S initiation complex (tRNA-fMet M1 + CUG start codon) Deposited 2024-03-06 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 309 IAS BETA-L-ASPARTIC ACID × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.63 Å
9AX8 70S initiation complex (tRNA-fMet M1, initiation factor 2 + CUG start codon) Deposited 2024-03-06 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain T 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 287 GCP PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
9CG5 70S initiation complex (tRNA-fMet M1 + UUG start codon) Deposited 2024-06-28 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 309 IAS BETA-L-ASPARTIC ACID × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.59 Å
9CG6 70S initiation complex (tRNA-fMet M1 + GUG start codon) Deposited 2024-06-28 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 309 IAS BETA-L-ASPARTIC ACID × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.61 Å
9CG7 70S initiation complex (tRNA-fMet M1 + AUG start codon) Deposited 2024-06-28 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 309 IAS BETA-L-ASPARTIC ACID × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.75 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 K 1–93（93 aa）
Not recorded 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
9MKK Structure of arbekacin bound Escherichia coli 70S ribosome Deposited 2024-12-17 Assembly 1 Protein–RNA Heteromer；Protein × 47 PDB declaration: 52-meric（52） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded 84G Arbekacin × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9MOR Damaged 70S ribosome with PrfH bound Deposited 2024-12-27 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 58-meric（58） Consistent with all polymers
Chain T 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 439 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.65 Å
9MQ4 Damaged 70S ribosome with PrfH bound Deposited 2025-01-01 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 58-meric（58） Consistent with all polymers
Chain T 1–100（100 aa）
Not recorded MG MAGNESIUM ION × 439 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.78 Å
9NJF E. coli pre-elongation complex without an A-site tRNA with EQ2-YbiT in Non-hydrolytic 1/PtIM(a) conformation Deposited 2025-02-27 Assembly 1 Protein–RNA Heteromer；Protein × 53 PDB declaration: 58-meric（58） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 124 ZN ZINC ION × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
9NJV E. coli 70S initiation complex (bL33 absent) Deposited 2025-02-28 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 152 FME N-FORMYLMETHIONINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9NKL E. coli 70S initiation complex Deposited 2025-03-01 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 161 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9NL5 E. coli pre-elongation complex without an A-site tRNA with EQ2-EttA in Hydrolytic 1 conformation Deposited 2025-03-02 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 125 ZN ZINC ION × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
9NL6 E. coli initiation complex with EQ2-YbiT in Non-hydrolytic 1/PtIM(a) conformation Deposited 2025-03-02 Assembly 1 Protein–RNA Heteromer；Protein × 50 PDB declaration: 55-meric（55） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 252 FME N-FORMYLMETHIONINE × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9NL7 E. coli initiation complex with EQ2-YbiT in Non-hydrolytic 2/PtIM(b) conformation Deposited 2025-03-02 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 250 FME N-FORMYLMETHIONINE × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9NLB E. coli initiation complex with EQ2-EttA in Hydrolytic 2 conformation Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 279 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 FME N-FORMYLMETHIONINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9NLE E. coli initiation complex with EQ2-EttA in Hydrolytic 1 conformation Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 298 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 FME N-FORMYLMETHIONINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9NLF E. coli initiation complex with EQ2-YbiT in Hydrolytic 2/PtIM(a) conformation Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 245 FME N-FORMYLMETHIONINE × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
9NLH E.coli Initiation complex with YheS-EQ2 Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 50 PDB declaration: 55-meric（55） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 263 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9NLJ E.coli Initiation complex with Uup-EQ2 Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 277 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
9NLQ E. coli initiation complex with EQ2-YbiT in Hydrolytic 1/PtIM(a) conformation Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 241 FME N-FORMYLMETHIONINE × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9NLS E. coli initiation complex with EQ2-YbiT in Intermediate/PtIM(b) conformation Deposited 2025-03-03 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain 23 1–93（93 aa）
Not recorded MG MAGNESIUM ION × 248 ZN ZINC ION × 1 FME N-FORMYLMETHIONINE × 1 ATP ADENOSINE-5'-TRIPHOSPHATE × 2 NA SODIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.30 Å
9O2X Structure of WT E.coli ribosome 70S subunit with complexed with mRNA, P-site fMet-NH-tRNAfMet and A-site (S)-betahydroxyBocK charged NH-tRNAPyl Deposited 2025-04-04 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 55-meric（55） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 320 FME N-FORMYLMETHIONINE × 1 K POTASSIUM ION × 10 PAR PAROMOMYCIN × 1 SPD SPERMIDINE × 14 SPM SPERMINE × 1 A1B71 (2S)-6-[(tert-butoxycarbonyl)amino]-2-(hydroxymethyl)hexanoic acid × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.29 Å
9O2Y Structure of WT E.coli ribosome 70S subunit with complexed with mRNA, P-site fMet-NH-tRNAfMet and A-site (R) beta-2-hydroxy-BocLysine acid charged NH-tRNAPyl Deposited 2025-04-04 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 55-meric（55） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded PAR PAROMOMYCIN × 1 MG MAGNESIUM ION × 320 SPD SPERMIDINE × 13 FME N-FORMYLMETHIONINE × 1 SPM SPERMINE × 1 K POTASSIUM ION × 10 ZN ZINC ION × 2 A1B70 (2R)-6-[(tert-butoxycarbonyl)amino]-2-(hydroxymethyl)hexanoic acid × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.14 Å
9PIH E. coli 70S ribosome bound to Doxycycline Deposited 2025-07-10 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 1 MG MAGNESIUM ION × 276 K POTASSIUM ION × 92 DXT (4S,4AR,5S,5AR,6R,12AS)-4-(DIMETHYLAMINO)-3,5,10,12,12A-PENTAHYDROXY-6-METHYL-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2-CARBOXAMIDE × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 Å
9PII E. coli 70S ribosome bound to Sarecycline Deposited 2025-07-10 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 1 MG MAGNESIUM ION × 281 K POTASSIUM ION × 100 V7A Sarecycline × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 Å
9PIJ E. coli 70S ribosome bound to Minocycline Deposited 2025-07-10 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 1 MG MAGNESIUM ION × 340 K POTASSIUM ION × 148 MIY (4S,4AS,5AR,12AS)-4,7-BIS(DIMETHYLAMINO)-3,10,12,12A-TETRAHYDROXY-1,11-DIOXO-1,4,4A,5,5A,6,11,12A-OCTAHYDROTETRACENE-2- CARBOXAMIDE × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.20 Å
9QSJ Cryo-EM structure of SKM-70S ribosomal stalled complex in the A-tRNA positioned (Body open) state. Deposited 2025-04-05 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 55-meric（55） Consistent with all polymers
Chain s 1–100（100 aa）
Not recorded ZN ZINC ION × 2 A1JAI [(2~{S},3~{S},4~{R},5~{R},6~{S})-4-[(2~{S},3~{R},4~{S},5~{R},6~{S})-5-acetamido-6-(hydroxymethyl)-4-[(2~{R},3~{R},4~{S},5~{S},6~{R})-6-(hydroxymethyl)-4-[(2~{S},3~{R},4~{R},5~{R},6~{R})-6-(hydroxymethyl)-5-methoxy-3,4-bis(oxidanyl)oxan-2-yl]oxy-3,5-bis(oxidanyl)oxan-2-yl]oxy-3-oxidanyl-oxan-2-yl]oxy-2-(hydroxymethyl)-6-[[~{N}-[4-[(~{N}-methylcarbamimidoyl)amino]butyl]carbamimidoyl]amino]-5-oxidanyl-oxan-3-yl] carbamate × 1 MG MAGNESIUM ION × 311 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE-PROPANE
Resolution 2.62 Å
9Y79 Escherichia coli transcription-translation loosely coupled complex (TTC-LC^walked) containing mRNA with a 39 nt long spacer, NusG, NusA, and fMet-tRNAs in E-site and P-site Deposited 2025-09-09 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain 2 1–100（100 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY mmCIF provides none of the parsed conditions Resolution 3.20 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.