DNA-directed RNA polymerase III 39 kDa polypeptide
Homo sapiens
State in the Current Structure
| Assembly | Oligomeric State | Construct | Mutations and Modifications | Ligands, Ions and Associated Components | Method and Experimental Conditions | Structure Quality |
|---|---|---|---|---|---|---|
| 1 | Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count | Chain A; UniProt 78–155 | Fragment:Winged helix domain, residues 8-85 Mutation:I42V | No other associated polymer | SOLUTION NMR NMR measurement conditions:pH 7;298 K;Ionic strength (raw mmCIF value) 120mM;Pressure ambient NMR sample composition:0.8mM U-15N, 13C; 20mM phosphate buffer NA; 100mM NaCl; 1mM d-DTT; 0.02% NaN3; 90% H2O, 10% D2O | 90% H2O/10% D2O | Resolution not provided |
Other States of the Same Protein in the Database
Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.
| Other PDB | Difference from Current Entry 2DK5 | Assembly / Oligomeric State | Construct | Mutations and Modifications | Ligands, Ions and Non-polymers | Method and Experimental Conditions | Structure Quality |
|---|---|---|---|---|---|---|---|
| 7A6H Cryo-EM structure of human apo RNA Polymerase III Deposited 2020-08-25 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 17 PDB declaration: heptadecameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 7.5
cryo-EM vitrification conditions
Cryogen ETHANE;Wait time 10 s
Blot force 4
Blot time 4 s
|
Resolution 3.30 Å |
| 7AE1 Cryo-EM structure of human RNA Polymerase III elongation complex 1 Deposited 2020-09-17 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 7.5
cryo-EM vitrification conditions
Cryogen ETHANE;Wait time 10 s
Blot force 4
Blot time 4 s
|
Resolution 2.80 Å |
| 7AE3 Cryo-EM structure of human RNA Polymerase III elongation complex 3 Deposited 2020-09-17 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 7.5
cryo-EM vitrification conditions
Cryogen ETHANE;Wait time 10 s
Blot force 4
Blot time 4 s
|
Resolution 3.10 Å |
| 7AEA Cryo-EM structure of human RNA Polymerase III elongation complex 2 Deposited 2020-09-17 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 7.5
cryo-EM vitrification conditions
Cryogen ETHANE;Wait time 10 s
Blot force 4
Blot time 4 s
|
Resolution 3.40 Å |
| 7AST Apo Human RNA Polymerase III Deposited 2020-10-28 | Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 17 PDB declaration: heptadecameric |
Chain Z
1–316(316 aa)
|
Not recorded | No recorded non-water small molecule |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 4.00 Å |
| 7D58 cryo-EM structure of human RNA polymerase III in elongating state Deposited 2020-09-25 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 2.90 Å |
| 7D59 cryo-EM structure of human RNA polymerase III in apo state Deposited 2020-09-25 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein heterocomplex Heteromer;Protein × 17 PDB declaration: heptadecameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.10 Å |
| 7DN3 Structure of Human RNA Polymerase III elongation complex Deposited 2020-12-08 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | MG MAGNESIUM ION × 1 ZN ZINC ION × 6 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.50 Å |
| 7DU2 RNA polymerase III EC complex in post-translocation state Deposited 2021-01-07 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | MG MAGNESIUM ION × 1 ZN ZINC ION × 6 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.35 Å |
| 7FJI human Pol III elongation complex Deposited 2021-08-04 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
|
Resolution 3.60 Å |
| 7FJJ human Pol III pre-termination complex Deposited 2021-08-04 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 17 PDB declaration: eicosameric |
Chain P
1–316(316 aa)
|
Not recorded | MG MAGNESIUM ION × 1 ZN ZINC ION × 7 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
|
Resolution 3.60 Å |
| 8ITY human RNA polymerase III pre-initiation complex closed DNA 1 Deposited 2023-03-23 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.90 Å |
| 8IUE RNA polymerase III pre-initiation complex melting complex 1 Deposited 2023-03-24 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 8 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 4.10 Å |
| 8IUH RNA polymerase III pre-initiation complex open complex 1 Deposited 2023-03-24 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 8 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.40 Å |
| 9FSO Human RNA Polymerase III Class III Open Pre-initiation Complex 1 (OC1) Deposited 2024-06-21 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain F
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 9 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.28 Å |
| 9FSP RNA Polymerase III Class III Open Pre-initation Complex 2 (OC2) Deposited 2024-06-21 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain F
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 9 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.39 Å |
| 9FSQ RNA Polymerase III Class III Melting Pre-Initiation Complex (MC) Deposited 2024-06-21 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain F
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 9 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.51 Å |
| 9FSR RNA Polymerase III Class III Open Mini Pre-initiation Complex 1 (OC1-mini) Deposited 2024-06-21 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain F
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 9 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 3.76 Å |
| 9FSS RNA Polymerase III Class III Open Mini Pre-Initiation complex 2 (OC2-mini) Deposited 2024-06-21 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Protein–DNA Heteromer;Protein × 23 PDB declaration: 25-meric |
Chain F
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 9 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE
|
Resolution 4.14 Å |
| 9K2G Human RNA Polymerase III de novo transcribing complex 13 (TC13) Deposited 2024-10-17 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 18 PDB declaration: 21-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.00 Å |
| 9K36 Human RNA Polymerase III de novo transcribing complex 12 (TC12) Deposited 2024-10-18 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 18 PDB declaration: 21-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 2.90 Å |
| 9K38 Human RNA Polymerase III de novo transcribing complex 6 (TC6) Deposited 2024-10-18 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 18 PDB declaration: 21-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.10 Å |
| 9K39 Human RNA Polymerase III de novo transcribing complex 8 (TC8) Deposited 2024-10-18 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 18 PDB declaration: 21-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 2.80 Å |
| 9K3B Human RNA Polymerase III de novo transcribing complex 10 overall (TC10-overall) Deposited 2024-10-18 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 23 PDB declaration: 26-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 4.80 Å |
| 9K3U Human RNA Polymerase III de novo transcribing complex 5 (TC5) Deposited 2024-10-20 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 23 PDB declaration: 26-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.00 Å |
| 9K3V Human RNA Polymerase III de novo transcribing complex 4 (TC4) Deposited 2024-10-20 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 23 PDB declaration: 26-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 MG MAGNESIUM ION × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.50 Å |
| 9LKT Human RNA Polymerase III de novo transcribing complex 10 (TC10) Deposited 2025-01-16 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 18 PDB declaration: 21-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 3AT 3'-DEOXYADENOSINE-5'-TRIPHOSPHATE × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.50 Å |
| 9LXN Human RNA Polymerase III de novo transcribing complex 5 (TC5)(without 3'dATP) Deposited 2025-02-18 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 23 PDB declaration: 26-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 7 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.30 Å |
| 9LXO Human RNA Polymerase III de novo transcribing complex 6 (TC6)(without 3'dATP) Deposited 2025-02-18 | Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics | Assembly 1 Other combination Heteromer;Protein × 18 PDB declaration: 21-meric |
Chain P
1–316(316 aa)
|
Not recorded | ZN ZINC ION × 6 MG MAGNESIUM ION × 1 SF4 IRON/SULFUR CLUSTER × 1 GTP GUANOSINE-5'-TRIPHOSPHATE × 1 |
ELECTRON MICROSCOPY
cryo-EM buffer
pH 8
cryo-EM vitrification conditions
Cryogen ETHANE-PROPANE
|
Resolution 3.60 Å |
29 other PDB entries and 29 assemblies. Open the comparison page and filter oligomeric states
View Construct and Data Evidence
| UniProt name | RPO3F_HUMAN |
| Isoform | — |
| PDB entities | 1 |
| Chains and sequence ranges | Author chain A; PDBConstruct 8–85; UniProt 78–155 |