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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：S5ME50 New Search
11PDB entries
11Biological assembly
12chain/assembly records
Main Difference Dimensions in This Set
Different assembly state Different ligand/ion 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
8PNP Influenza A/H7N9 polymerase in pre-initiation state with continuous Pol II pS5 CTD peptide mimic bound in site 1A/2A Deposited 2023-06-30 Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: pentameric（5） Consistent with all polymers
Chain B 1–757（757 aa）
Mutation：K577G No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.49 Å
8PNQ Influenza A/H7N9 polymerase in elongation state with continuous Pol II pS5 CTD peptide mimic bound in site 1A/2A Deposited 2023-06-30 Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain B 1–757（757 aa）
Mutation：K577G 2KH 5'-O-[(S)-hydroxy{[(S)-hydroxy(phosphonooxy)phosphoryl]amino}phosphoryl]uridine × 1 MG MAGNESIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.88 Å
8R3K Influenza A/H7N9 polymerase in self-stalled pre-termination state, with Pol II pS5 CTD peptide mimic bound in site 1A/2A. Deposited 2023-11-09 Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain B 1–757（757 aa）
Mutation：K577G POP PYROPHOSPHATE 2- × 1 MG MAGNESIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.43 Å
8R3L Influenza A/H7N9 polymerase in pre-initiation state, intermediate conformation (I) with PB2-C(I), ENDO(T), and Pol II pS5 CTD peptide mimic bound in site 1A/2A Deposited 2023-11-09 Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain B 1–757（757 aa）
Mutation：K577G No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.25 Å
8RMP Influenza polymerase A/H7N9-4M (ENDO(R) | Core1) Deposited 2024-01-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–757（757 aa）
Mutation：K577G MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.77 Å
8RMQ Influenza polymerase A/H7N9-4M (ENDO(R) | Core2) Deposited 2024-01-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–757（757 aa）
Mutation：K577G MG MAGNESIUM ION × 2 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.54 Å
8RMR Influenza polymerase A/H7N9-4M replication complex, an asymmetric polymerase dimer bound to human ANP32A Deposited 2024-01-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 7 PDB declaration: heptameric（7） Consistent with protein count
Chain B 1–757（757 aa）
Chain E 1–757（757 aa）
Mutation：K577G Mutation：K577G MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.25 Å
8RMS Influenza polymerase A/H7N9-4M replicase minus 627(R) (from "Influenza polymerase A/H7N9-4M replication complex" | Local refinement) Deposited 2024-01-08 Assembly 1 Protein heterocomplex Heteromer；Protein × 3 PDB declaration: trimeric（3） Consistent with protein count
Chain B 1–757（757 aa）
Mutation：K577G MG MAGNESIUM ION × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.21 Å
8RN0 Influenza polymerase A/H7N9-4M encapsidase plus 627(R) / human ANP32A (from "Influenza polymerase A/H7N9-4M replication complex" | Local refinement) Deposited 2024-01-09 Assembly 1 Protein heterocomplex Heteromer；Protein × 5 PDB declaration: pentameric（5） Consistent with protein count
Chain E 1–757（757 aa）
Mutation：K577G No recorded non-water small molecule ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.13 Å
9RAF Influenza A/H7N9 polymerase in complex with a 70-mer template in stalled elongation with backtracking and stem. Deposited 2025-05-20 Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain B 1–757（757 aa）
Mutation：K577G MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.15 Å
9RAG Influenza A/H7N9 polymerase in complex with a 70-mer RNA template, in stalled elongation. Deposited 2025-05-20 Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: hexameric（6） Consistent with all polymers
Chain B 1–757（757 aa）
Mutation：K577G MG MAGNESIUM ION × 3 POP PYROPHOSPHATE 2- × 1 ELECTRON MICROSCOPY
cryo-EM buffer pH 8
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 1.99 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.