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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：U9XYQ6 New Search
21PDB entries
21Biological assembly
21chain/assembly records
Main Difference Dimensions in This Set
Different assembly state 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
6VU3 Cryo-EM structure of Escherichia coli transcription-translation complex A (TTC-A) containing mRNA with a 12 nt long spacer Deposited 2020-02-14 Assembly 1 Other combination Heteromer；Protein × 58 PDB declaration: 66-meric（66） Consistent with all polymers
Chain AB 1–181（181 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 3.70 Å
6VYQ Escherichia coli transcription-translation complex A1 (TTC-A1) containing an 15 nt long mRNA spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 58 PDB declaration: 66-meric（66） Consistent with all polymers
Chain AB 1–181（181 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 3.70 Å
6VYR Escherichia coli transcription-translation complex A1 (TTC-A1) containing an 18 nt long mRNA spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 58 PDB declaration: 66-meric（66） Consistent with all polymers
Chain AB 1–181（181 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 3.80 Å
6VYS Escherichia coli transcription-translation complex A1 (TTC-A1) containing a 21 nt long mRNA spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 58 PDB declaration: 66-meric（66） Consistent with all polymers
Chain AB 1–181（181 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 3.70 Å
6VYT Escherichia coli transcription-translation complex A2 (TTC-A2) containing a 15 nt long mRNA spacer, NusG, and fMet-tRNAs at P-site and E-site Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 55 PDB declaration: 64-meric（64） Consistent with all polymers
Chain AB 1–181（181 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 14.00 Å
6VYU Escherichia coli transcription-translation complex C2 (TTC-C2) containing a 27 nt long mRNA spacer Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 56 PDB declaration: 65-meric（65） Consistent with all polymers
Chain AB 1–181（181 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 7.00 Å
6VYW Escherichia coli transcription-translation complex C3 (TTC-C3) containing mRNA with a 27 nt long spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 56 PDB declaration: 65-meric（65） Consistent with all polymers
Chain AB 1–181（181 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 7.00 Å
6VYY Escherichia coli transcription-translation complex C5 (TTC-C5) containing mRNA with a 21 nt long spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-02-27 Assembly 1 Other combination Heteromer；Protein × 56 PDB declaration: 65-meric（65） Consistent with all polymers
Chain AB 1–181（181 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 9.90 Å
6X6T Cryo-EM structure of an Escherichia coli coupled transcription-translation complex B1 (TTC-B1) containing an mRNA with a 24 nt long spacer, transcription factors NusA and NusG, and fMet-tRNAs at P-site and E-site Deposited 2020-05-29 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain AB 1–181（181 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 3.20 Å
6X7F Cryo-EM structure of an Escherichia coli coupled transcription-translation complex B2 (TTC-B2) containing an mRNA with a 24 nt long spacer, transcription factors NusA and NusG, and fMet-tRNAs at P-site and E-site Deposited 2020-05-29 Assembly 1 Other combination Heteromer；Protein × 60 PDB declaration: 68-meric（68） Consistent with all polymers
Chain AB 1–181（181 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 3.50 Å
6XII Escherichia coli transcription-translation complex B (TTC-B) containing an 24 nt long mRNA spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-06-20 Assembly 1 Other combination Heteromer；Protein × 59 PDB declaration: 67-meric（67） Consistent with all polymers
Chain AB 1–181（181 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 7.00 Å
6XIJ Escherichia coli transcription-translation complex A (TTC-A) containing an 24 nt long mRNA spacer, NusG, and fMet-tRNAs at E-site and P-site Deposited 2020-06-20 Assembly 1 Other combination Heteromer；Protein × 58 PDB declaration: 66-meric（66） Consistent with all polymers
Chain AB 1–181（181 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 8.00 Å
8E3F Escherichia coli Rho-dependent transcription pre-termination complex containing 18 nt long RNA spacer, Mg-ADP-BeF3, and NusG; TEC part Deposited 2022-08-17 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–181（181 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 6.50 Å
8E5K Escherichia coli Rho-dependent transcription pre-termination complex containing 21 nt long RNA spacer, Mg-ADP-BeF3, and NusG; TEC part Deposited 2022-08-22 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–181（181 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å
8E5O Escherichia coli Rho-dependent transcription pre-termination complex containing 24 nt long RNA spacer, Mg-ADP-BeF3, and NusG; TEC part Deposited 2022-08-22 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–181（181 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.40 Å
8E6X Escherichia coli Rho-dependent transcription pre-termination complex containing 18 nt long RNA spacer, lambda-tR1 rut RNA, Mg-ADP-BeF3, and NusG; TEC part Deposited 2022-08-23 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–181（181 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.27 Å
8E6Z Escherichia coli Rho-dependent transcription pre-termination complex containing 18 nt long RNA spacer, dC75 rut mimic RNA, Mg-ADP-BeF3, and NusG; TEC part Deposited 2022-08-23 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain F 1–181（181 aa）
Not recorded MG MAGNESIUM ION × 1 ZN ZINC ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.9
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.10 Å
8E79 Mycobacterium tuberculosis RNAP paused elongation complex with Escherichia coli NusG transcription factor Deposited 2022-08-23 Assembly 1 Other combination Heteromer；Protein × 6 PDB declaration: nonameric（9） Consistent with all polymers
Chain N 1–181（181 aa）
Not recorded ZN ZINC ION × 2 MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.71 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 AB 1–181（181 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 AB 1–181（181 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 AB 1–181（181 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

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.