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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：P0A7T1 New Search
12PDB entries
13Biological assembly
13chain/assembly records
Main Difference Dimensions in This Set
Different construct Different mutation/modification 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
4V5B Structure of PDF binding helix in complex with the ribosome. Deposited 2007-11-22 Assembly 1 Insufficient information Heteromer；Protein × 50 PDB declaration: 53-meric（53） Consistent with all polymers
Chain BM 2–118（117 aa） Fragment：RESIDUES 2-118
Not recorded MG MAGNESIUM ION × 170 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；pH 7.5
Resolution 3.74 Å R-free 0.323
4V5B Structure of PDF binding helix in complex with the ribosome. Deposited 2007-11-22 Assembly 2 Insufficient information Heteromer；Protein × 49 PDB declaration: 52-meric（52） Consistent with all polymers
Chain not uniquely mapped Reference range not declared Fragment：RESIDUES 2-118
Not recorded MG MAGNESIUM ION × 173 X-RAY DIFFRACTION
X-ray crystallization conditions pH 7.5；pH 7.5
Resolution 3.74 Å R-free 0.323
5UZ4 The cryo-EM structure of YjeQ bound to the 30S subunit suggests a fidelity checkpoint function for this protein in ribosome assembly Deposited 2017-02-24 Assembly 1 Protein–RNA Heteromer；Protein × 20 PDB declaration: 21-meric（21） Consistent with all polymers
Chain M 1–118（118 aa）
Not recorded ZN ZINC ION × 1 GGM 3'-O-(N-methylanthraniloyl)-beta:gamma-imidoguanosine-5'-triphosphate × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 5.80 Å
5WF0 70S ribosome-EF-Tu H84A complex with GTP and near-cognate tRNA (Complex C2) Deposited 2017-07-11 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 59-meric（59） Consistent with all polymers
Chain m 2–116（115 aa）
Not recorded FME N-FORMYLMETHIONINE × 1 MG MAGNESIUM ION × 1480 K POTASSIUM ION × 5 PHE PHENYLALANINE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；5 second blot time, no wait time
Resolution 3.60 Å
5WFS 70S ribosome-EF-Tu H84A complex with GTP and near-cognate tRNA (Complex C4) Deposited 2017-07-12 Assembly 1 Protein–RNA Heteromer；Protein × 52 PDB declaration: 59-meric（59） Consistent with all polymers
Chain m 2–116（115 aa）
Not recorded FME N-FORMYLMETHIONINE × 1 MG MAGNESIUM ION × 1471 K POTASSIUM ION × 7 PHE PHENYLALANINE × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE；5 second blot time, no wait time
Resolution 3.00 Å
6AWB Structure of 30S ribosomal subunit and RNA polymerase complex in non-rotated state Deposited 2017-09-05 Assembly 1 Protein–RNA Heteromer；Protein × 26 PDB declaration: 27-meric（27） Consistent with all polymers
Chain P 2–115（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；20 mM Tris-HCl, pH 7.0, 100 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA, 6 mM BME
cryo-EM vitrification conditions Cryogen ETHANE；2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8.
Resolution 6.70 Å
6AWC Structure of 30S ribosomal subunit and RNA polymerase complex in rotated state Deposited 2017-09-05 Assembly 1 Protein–RNA Heteromer；Protein × 26 PDB declaration: 27-meric（27） Consistent with all polymers
Chain P 2–115（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；20 mM Tris-HCl, pH 7.0, 100 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA, 6 mM BME
cryo-EM vitrification conditions Cryogen ETHANE；2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8.
Resolution 7.90 Å
6AWD Structure of 30S (S1 depleted) ribosomal subunit and RNA polymerase complex Deposited 2017-09-05 Assembly 1 Protein–RNA Heteromer；Protein × 25 PDB declaration: 26-meric（26） Consistent with all polymers
Chain P 2–115（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7；20 mM Tris-HCl, pH 7.0, 100 mM NH4Cl, 10 mM MgCl2, 0.5 mM EDTA, 6 mM BME
cryo-EM vitrification conditions Cryogen ETHANE；2.5 uL of 50 nM 30S and 150 nM RNAP was applied to the grid. After a 30 second incubation, the grid was blotted for 5 seconds at blotting power 8.
Resolution 8.10 Å
9OZ9 Flavobacterium johnsoniae 70S initiation complex with Shine-Dalgarno-less mRNA. Deposited 2025-06-05 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain r 1–114（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.60 Å
9OZN Flavobacterium johnsoniae 70S initiation complex with rpsU mRNA containing Shine-Dalgarno sequence. State 1. Deposited 2025-06-05 Assembly 1 Protein–RNA Heteromer；Protein × 51 PDB declaration: 56-meric（56） Consistent with all polymers
Chain r 1–114（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 Å
9OZZ Flavobacterium johnsoniae 70S initiation complex with rpsU mRNA containing Shine-Dalgarno sequence. State 2. Deposited 2025-06-06 Assembly 1 Protein–RNA Heteromer；Protein × 50 PDB declaration: 55-meric（55） Consistent with all polymers
Chain r 1–114（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.50 Å
9P0E Flavobacterium johnsoniae ZAM64 mutant 70S initiation complex with rpsU mRNA containing Shine-Dalgarno sequence. Deposited 2025-06-06 Assembly 1 Protein–RNA Heteromer；Protein × 49 PDB declaration: 54-meric（54） Consistent with all polymers
Chain r 1–114（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.80 Å
9ZCD Flavobacterium johnsoniae 30S ribosomal subunit. Deposited 2025-11-23 Assembly 1 Protein–RNA Heteromer；Protein × 21 PDB declaration: 22-meric（22） Consistent with all polymers
Chain r 1–114（114 aa）
Not recorded No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 7.4
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.70 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.