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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：A0A140N5A3 New Search
37PDB entries
37Biological assembly
37chain/assembly records
Main Difference Dimensions in This Set
Different construct 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
6QDW Cryo-EM structure of the 50S ribosomal subunit at 2.83 Angstroms with modeled GBC SecM peptide Deposited 2019-01-03 Assembly 1 Protein–RNA Heteromer；Protein × 29 PDB declaration: 32-meric（32） Consistent with all polymers
Chain f 1–179（179 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5；Tico Buffer
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.83 Å
6YS3 Cryo-EM structure of the 50S ribosomal subunit at 2.58 Angstroms with modeled GBC SecM peptide Deposited 2020-04-20 Assembly 1 Protein–RNA Heteromer；Protein × 29 PDB declaration: 32-meric（32） Consistent with all polymers
Chain f 1–179（179 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.58 Å
7OTC Cryo-EM structure of an Escherichia coli 70S ribosome in complex with elongation factor G and the antibiotic Argyrin B Deposited 2021-06-10 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 52-meric（52） Consistent with all polymers
Chain F 2–178（177 aa）
Not recorded MG MAGNESIUM ION × 292 ATP ADENOSINE-5'-TRIPHOSPHATE × 1 PUT 1,4-DIAMINOBUTANE × 8 SPD SPERMIDINE × 2 ZN ZINC ION × 2 GDP GUANOSINE-5'-DIPHOSPHATE × 1 1I7 Argyrin B × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8FZD Cryo-EM structure of an E. coli non-rotated ribosome termination complex bound with apoRF3, RF1, P- and E-site tRNAPhe (Composite state I-B) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 53 PDB declaration: 59-meric（59） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 581 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8FZE Cryo-EM structure of an E. coli non-rotated ribosome termination complex bound with RF1, P- and E-site tRNAPhe (State I-A) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 58-meric（58） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 570 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
8FZF Cryo-EM structure of an E. coli rotated ribosome complex bound with RF3-ppGpp and p/E-tRNAPhe (Composite state I-C) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 384 G4P GUANOSINE-5',3'-TETRAPHOSPHATE × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8FZG Cryo-EM structure of an E. coli non-rotated ribosome termination complex bound with RF3-GDPCP, RF1, P- and E-site tRNAPhe (Composite state II-A) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 53 PDB declaration: 59-meric（59） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 428 GCP PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8FZH Cryo-EM structure of an E. coli non-rotated ribosome termination complex bound with RF1, P- and E-site tRNAPhe (State II-D) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 58-meric（58） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 595 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8FZI Cryo-EM structure of an E. coli rotated ribosome bound with RF3-GDPCP and p/E-tRNAPhe (Composite state II-B) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 737 GCP PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8FZJ Cryo-EM structure of an E. coli rotated ribosome bound with RF3-GDPCP and p/E-tRNAPhe (Composite state II-C) Deposited 2023-01-28 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain F 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 757 GCP PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4；5 mM Tris-HCl, 60 mM NH4Cl, 10 mM MgCl2, 6 mM B-mercaptoethanol
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.00 Å
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 E 1–179（179 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 n 1–179（179 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 E 1–179（179 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 E 1–179（179 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
8UXB E. coli 70S ribosome with unmodified P/E-tRNAPro(GGG) bound to slippery P-site CCC-C codon Deposited 2023-11-09 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain E 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 287 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.90 Å
8UZ3 E. coli 70S ribosome with unmodified e*/E-tRNAPro(GGG) bound to slippery P-site CCC-C codon Deposited 2023-11-14 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain E 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 415 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 Å
8UZG E. coli 70S ribosome with unmodified e*/E-tRNAPro(GGG) bound to slippery P-site CCC-C codon Deposited 2023-11-15 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 53-meric（53） Consistent with all polymers
Chain E 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 398 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 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 E 1–179（179 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
8VKV Escherichia coli transcription-translation coupled complex (TTC-B) containing mRNA with a 33 nt long spacer, ops signal, RfaH, NusA, and fMet-tRNAs in E-site and P-site Deposited 2024-01-10 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain n 1–179（179 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 3.60 Å
8VL1 Escherichia coli transcription-translation loosely coupled complex (TTC-LC) containing mRNA with a 36 nt long spacer, ops signal, RfaH, NusA, and fMet-tRNAs in E-site and P-site Deposited 2024-01-11 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain n 1–179（179 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 5.30 Å
8VOO Escherichia coli transcription-translation loosely coupled complex (TTC-LC) containing mRNA with a 39 nt long spacer, ops signal, RfaH, 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 n 1–179（179 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 3.40 Å
8VOP Escherichia coli transcription-translation coupled complex (TTC-B) containing mRNA with a 36 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 n 1–179（179 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 6.00 Å
8VOQ Escherichia coli transcription-translation loosely coupled complex (TTC-LC) containing mRNA with a 39 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 n 1–179（179 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 9.30 Å
8VOR Escherichia coli transcription-translation loosely coupled complex (TTC-LC) containing mRNA with a 51 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 n 1–179（179 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 3.60 Å
8VS9 Endogenous trans-translation complex with tmRNA*SmpB in the P site and alanyl-tRNA in the A site and deacyl-tRNA in the E site of E. coli 70S ribosome Deposited 2024-01-23 Assembly 1 Protein–RNA Heteromer；Protein × 53 PDB declaration: 59-meric（59） Consistent with all polymers
Chain L05 1–179（179 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.90 Å
8VSA Endogenous trans-translation complex with tmRNA*SmpB in the P site and alanyl-tRNA in the A site of E. coli 70S ribosome Deposited 2024-01-23 Assembly 1 Protein–RNA Heteromer；Protein × 53 PDB declaration: 58-meric（58） Consistent with all polymers
Chain L05 1–179（179 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8VV4 E. coli 70S ribosome with unmodified Lys-tRNAPro(GGG) in the P/P conformation on a slippery CCC-C codon Deposited 2024-01-30 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain E 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 424 LYS LYSINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.40 Å
8VWQ E. coli 70S ribosome with unmodified Lys-tRNAPro(GGG) in the P/P conformation on a slippery CCC-C codon and Elongation Factor P bound (uL1 in the closed conformation) Deposited 2024-02-02 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain E 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 586 LYS LYSINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.10 Å
8W2N E. coli 70S ribosome with unmodified Lys-tRNAPro(GGG) in the P/P conformation on a slippery CCC-C codon and Elongation Factor P bound (uL1 in the open conformation) Deposited 2024-02-20 Assembly 1 Protein–RNA Heteromer；Protein × 50 PDB declaration: 55-meric（55） Consistent with all polymers
Chain E 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 481 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.6
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.20 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 f 1–179（179 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
9B4Z E. coli 70S ribosome complex (N1-methylated 16S A1408 + arbekacin) Deposited 2024-03-21 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 56-meric（56） Consistent with all polymers
Chain BF 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 309 84G Arbekacin × 2 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.20 Å
9B50 E. coli 70S ribosome complex (unmethylated 16S A1408 + arbekacin) Deposited 2024-03-21 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 52-meric（52） Consistent with all polymers
Chain BF 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 309 84G Arbekacin × 2 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
9B51 E. coli 70S ribosome complex (N1-methylated 16S A1408 + G418) Deposited 2024-03-21 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 56-meric（56） Consistent with all polymers
Chain BF 1–179（179 aa）
Not recorded MG MAGNESIUM ION × 309 GET GENETICIN × 2 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.40 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 f 1–179（179 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 f 1–179（179 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 f 1–179（179 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
9GR1 E. coli 70S-TEC complex in delivery state Deposited 2024-09-10 Assembly 1 Protein–RNA Heteromer；Protein × 48 PDB declaration: 55-meric（55） Consistent with all polymers
Chain f 1–179（179 aa）
Not recorded ZN ZINC ION × 1 K POTASSIUM ION × 168 MG MAGNESIUM ION × 360 PHE PHENYLALANINE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.17 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.