6f41

RNA Polymerase III initially transcribing complex

Method: ELECTRON MICROSCOPY

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1. Protein Identity and Related Structures Protein Identity & Related Structures

DNA-directed RNA polymerase III subunit RPC1

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC1_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–1460； UniProt 1–1460

DNA-directed RNA polymerase III subunit RPC2

OrganismNot specified

UniProt P22276

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC2_YEAST
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–1149； UniProt 1–1149

DNA-directed RNA polymerases I and III subunit RPAC1

OrganismNot specified

UniProt P07703

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAC1_YEAST
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–335； UniProt 1–335

DNA-directed RNA polymerase III subunit RPC9

OrganismNot specified

UniProt P47076

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC9_YEAST
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–161； UniProt 1–161

DNA-directed RNA polymerases I, II, and III subunit RPABC1

OrganismNot specified

UniProt P20434

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAB1_YEAST
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–215； UniProt 1–215

DNA-directed RNA polymerases I, II, and III subunit RPABC2

OrganismNot specified

UniProt P20435

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAB2_YEAST
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain F； PDBConstruct 1–155； UniProt 1–155

DNA-directed RNA polymerase III subunit RPC8

OrganismNot specified

UniProt P35718

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC8_YEAST
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain G； PDBConstruct 1–212； UniProt 1–212

DNA-directed RNA polymerases I, II, and III subunit RPABC3

OrganismNot specified

UniProt P20436

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAB3_YEAST
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain H； PDBConstruct 1–146； UniProt 1–146

DNA-directed RNA polymerase III subunit RPC10

OrganismNot specified

UniProt Q04307

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC10_YEAST
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain I； PDBConstruct 1–110； UniProt 1–110

DNA-directed RNA polymerases I, II, and III subunit RPABC5

OrganismNot specified

UniProt P22139

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAB5_YEAST
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain J； PDBConstruct 1–70； UniProt 1–70

DNA-directed RNA polymerases I and III subunit RPAC2

OrganismNot specified

UniProt P28000

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAC2_YEAST
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain K； PDBConstruct 1–142； UniProt 1–142

DNA-directed RNA polymerases I, II, and III subunit RPABC4

OrganismNot specified

UniProt P40422

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPAB4_YEAST
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain L； PDBConstruct 1–70； UniProt 1–70

DNA-directed RNA polymerase III subunit RPC5

OrganismNot specified

UniProt P36121

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC5_YEAST
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain M； PDBConstruct 1–282； UniProt 1–282

DNA-directed RNA polymerase III subunit RPC4

OrganismNot specified

UniProt P25441

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC4_YEAST
Isoform	—
PDB entities	14
Chains and sequence ranges	Author chain N； PDBConstruct 1–422； UniProt 1–422

DNA-directed RNA polymerase III subunit RPC3

OrganismNot specified

UniProt P32349

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC3_YEAST
Isoform	—
PDB entities	15
Chains and sequence ranges	Author chain O； PDBConstruct 1–654； UniProt 1–654

DNA-directed RNA polymerase III subunit RPC6

OrganismNot specified

UniProt P32910

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC6_YEAST
Isoform	—
PDB entities	16
Chains and sequence ranges	Author chain P； PDBConstruct 1–317； UniProt 1–317

DNA-directed RNA polymerase III subunit RPC7

OrganismNot specified

UniProt P17890

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPC7_YEAST
Isoform	—
PDB entities	17
Chains and sequence ranges	Author chain Q； PDBConstruct 1–251； UniProt 1–251

TATA-box-binding protein

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

UniProt P13393

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） Transcription factor IIIB 70 kDa subunit × 1 （P29056） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TBP_YEAST
Isoform	—
PDB entities	18
Chains and sequence ranges	Author chain U； PDBConstruct 1–240； UniProt 1–240

Transcription factor IIIB 70 kDa subunit

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

UniProt P29056

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） ;Transcription factor TFIIIB component B'' ; × 1 （P46678） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TF3B_YEAST
Isoform	—
PDB entities	19
Chains and sequence ranges	Author chain V； PDBConstruct 1–596； UniProt 1–596

;Transcription factor TFIIIB component B'' ;

Saccharomyces cerevisiae (strain ATCC 204508 / S288c)

UniProt P46678

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 20 DNA 2 RNA 1	DNA-directed RNA polymerase III subunit RPC1 × 1 （P04051） DNA-directed RNA polymerase III subunit RPC2 × 1 （P22276） DNA-directed RNA polymerases I and III subunit RPAC1 × 1 （P07703） DNA-directed RNA polymerase III subunit RPC9 × 1 （P47076） DNA-directed RNA polymerases I, II, and III subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerases I, II, and III subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase III subunit RPC8 × 1 （P35718） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase III subunit RPC10 × 1 （Q04307） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerases I and III subunit RPAC2 × 1 （P28000） DNA-directed RNA polymerases I, II, and III subunit RPABC4 × 1 （P40422） DNA-directed RNA polymerase III subunit RPC5 × 1 （P36121） DNA-directed RNA polymerase III subunit RPC4 × 1 （P25441） DNA-directed RNA polymerase III subunit RPC3 × 1 （P32349） DNA-directed RNA polymerase III subunit RPC6 × 1 （P32910） DNA-directed RNA polymerase III subunit RPC7 × 1 （P17890） TATA-box-binding protein × 1 （P13393） Transcription factor IIIB 70 kDa subunit × 1 （P29056） RNA × 1 Non-Template DNA × 1 Template-DNA × 1 ZINC ION × 7	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TFC5_YEAST
Isoform	—
PDB entities	20
Chains and sequence ranges	Author chain W； PDBConstruct 1–594； UniProt 1–594

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	6f41
Deposition date deposition_date	2017-11-29
Structure title title	RNA Polymerase III initially transcribing complex
Keywords keywords	Transcription, RNA Polymerase III, Pre-Initiation Complex, TFIIIB, Brf1, Bdp1, Enzyme; TRANSCRIPTION
Experimental Method method	ELECTRON MICROSCOPY

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

6f41__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

6f41__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

6f41__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	62.26 Å
Rg (electron density)	61.91 Å
Total Rg	61.97 Å
Atom count	47787
Residues	5798
Excluded volume	847100 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`6f41__assembly_1__model_1`	23-meric （23）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (24)

Entity 1 Entity 1 polymer

Description description	DNA-directed RNA polymerase III subunit RPC1
Molecular weight formula_weight	162517.8 kDa
EC 编号 ec_number	2.7.7.6
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	47788

MKEVVVSETPKRIKGLEFSALSAADIVAQSEVEVSTRDLFDLEKDRAPKANGALDPKMGVSSSSLECATCHGNLASCHGHFGHLKLALPVFHIGYFKATIQILQGICKNCSAILLSETDKRQFLHELRRPGVDNLRRMGILKKILDQCKKQRRCLHCGALNGVVKKAAAGAGSAALKIIHDTFRWVGKKSAPEKDIWVGEWKEVLAHNPELERYVKRCMDDLNPLKTLNLFKQIKSADCELLGIDATVPSGRPETYIWRYLPAPPVCIRPSVMMQDSPASNEDDLTVKLTEIVWTSSLIKAGLDKGISINNMMEHWDYLQLTVAMYINSDSVNPAMLPGSSNGGGKVKPIRGFCQRLKGKQGRFRGNLSGKRVDFSGRTVISPDPNLSIDEVAVPDRVAKVLTYPEKVTRYNRHKLQELIVNGPNVHPGANYLLKRNEDARRNLRYGDRMKLAKNLQIGDVVERHLEDGDVVLFNRQPSLHRLSILSHYAKIRPWRTFRLNECVCTPYNADFDGDEMNLHVPQTEEARAEAINLMGVKNNLLTPKSGEPIIAATQDFITGSYLISHKDSFYDRATLTQLLSMMSDGIEHFDIPPPAIMKPYYLWTGKQVFSLLIKPNHNSPVVINLDAKNKVFVPPKSKSLPNEMSQNDGFVIIRGSQILSGVMDKSVLGDGKKHSVFYTILRDYGPQEAANAMNRMAKLCARFLGNRGFSIGINDVTPADDLKQKKEELVEIAYHKCDELITLFNKGELETQPGCNEEQTLEAKIGGLLSKVREEVGDVCINELDNWNAPLIMATCGSKGSTLNVSQMVAVVGQQIISGNRVPDGFQDRSLPHFPKNSKTPQSKGFVRNSFFSGLSPPEFLFHAISGREGLVDTAVKTAETGYMSRRLMKSLEDLSCQYDNTVRTSANGIVQFTYGGDGLDPLEMEGNAQPVNFNRSWDHAYNITFNNQDKGLLPYAIMETANEILGPLEERLVRYDNSGCLVKREDLNKAEYVDQYDAERDFYHSLREYINGKATALANLRKSRGMLGLLEPPAKELQGIDPDETVPDNVKTSVSQLYRISEKSVRKFLEIALFKYRKARLEPGTAIGAIGAQSIGEPGTQMTLKTFHFAGVASMNVTLGVPRIKEIINASKVISTPIINAVLVNDNDERAARVVKGRVEKTLLSDVAFYVQDVYKDNLSFIQVRIDLGTIDKLQLELTIEDIAVAITRASKLKIQASDVNIIGKDRIAINVFPEGYKAKSISTSAKEPSENDVFYRMQQLRRALPDVVVKGLPDISRAVINIRDDGKRELLVEGYGLRDVMCTDGVIGSRTTTNHVLEVFSVLGIEAARYSIIREINYTMSNHGMSVDPRHIQLLGDVMTYKGEVLGITRFGLSKMRDSVLQLASFEKTTDHLFDAAFYMKKDAVEGVSECIILGQTMSIGTGSFKVVKGTNISEKDLVPKRCLFESLSNEAALKAN

Entity 2 Entity 2 polymer

Description description	DNA-directed RNA polymerase III subunit RPC2
Molecular weight formula_weight	129629.4 kDa
EC 编号 ec_number	2.7.7.6
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MVAATKRRKTHIHKHVKDEAFDDLLKPVYKGKKLTDEINTAQDKWHLLPAFLKVKGLVKQHLDSFNYFVDTDLKKIIKANQLILSDVDPEFYLKYVDIRVGKKSSSSTKDYLTPPHECRLRDMTYSAPIYVDIEYTRGRNIIMHKDVEIGRMPIMLRSNKCILYDADESKMAKLNECPLDPGGYFIVNGTEKVILVQEQLSKNRIIVEADEKKGIVQASVTSSTHERKSKTYVITKNGKIYLKHNSIAEEIPIAIVLKACGILSDLEIMQLVCGNDSSYQDIFAVNLEESSKLDIYTQQQALEYIGAKVKTMRRQKLTILQEGIEAIATTVIAHLTVEALDFREKALYIAMMTRRVVMAMYNPKMIDDRDYVGNKRLELAGQLISLLFEDLFKKFNNDFKLSIDKVLKKPNRAMEYDALLSINVHSNNITSGLNRAISTGNWSLKRFKMERAGVTHVLSRLSYISALGMMTRISSQFEKSRKVSGPRALQPSQFGMLCTADTPEGEACGLVKNLALMTHITTDDEEEPIKKLCYVLGVEDITLIDSASLHLNYGVYLNGTLIGSIRFPTKFVTQFRHLRRTGKVSEFISIYSNSHQMAVHIATDGGRICRPLIIVSDGQSRVKDIHLRKLLDGELDFDDFLKLGLVEYLDVNEENDSYIALYEKDIVPSMTHLEIEPFTILGAVAGLIPYPHHNQSPRNTYQCAMGKQAIGAIAYNQFKRIDTLLYLMTYPQQPMVKTKTIELIDYDKLPAGQNATVAVMSYSGYDIEDALVLNKSSIDRGFGRCETRRKTTTVLKRYANHTQDIIGGMRVDENGDPIWQHQSLGPDGLGEVGMKVQSGQIYINKSVPTNSADAPNPNNVNVQTQYREAPVIYRGPEPSHIDQVMMSVSDNDQALIKVLLRQNRRPELGDKFSSRHGQKGVCGIIVKQEDMPFNDQGIVPDIIMNPHGFPSRMTVGKMIELISGKAGVLNGTLEYGTCFGGSKLEDMSKILVDQGFNYSGKDMLYSGITGECLQAYIFFGPIYYQKLKHMVLDKMHARARGPRAVLTRQPTEGRSRDGGLRLGEMERDCVIAYGASQLLLERLMISSDAFEVDVCDKCGLMGYSGWCTTCKSAENIIKMTIPYAAKLLFQELLSMNIAPRLRLEDIFQQ

Entity 3 Entity 3 polymer

Description description	DNA-directed RNA polymerases I and III subunit RPAC1
Molecular weight formula_weight	37732.6 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

MSNIVGIEYNRVTNTTSTDFPGFSKDAENEWNVEKFKKDFEVNISSLDAREANFDLINIDTSIANAFRRIMISEVPSVAAEYVYFFNNTSVIQDEVLAHRIGLVPLKVDPDMLTWVDSNLPDDEKFTDENTIVLSLNVKCTRNPDAPKGSTDPKELYNNAHVYARDLKFEPQGRQSTTFADCPVVPADPDILLAKLRPGQEISLKAHCILGIGGDHAKFSPVSTASYRLLPQINILQPIKGESARRFQKCFPPGVIGIDEGSDEAYVKDARKDTVSREVLRYEEFADKVKLGRVRNHFIFNVESAGAMTPEEIFFKSVRILKNKAEYLKNCPITQ

Entity 4 Entity 4 polymer

Description description	DNA-directed RNA polymerase III subunit RPC9
Molecular weight formula_weight	18623.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

MKVLEERNAFLSDYEVLKFLTDLEKKHLWDQKSLAALKKSRSKGKQNRPYNHPELQGITRNVVNYLSINKNFINQEDEGEERESSGAKDAEKSGISKMSDESFAELMTKLNSFKLFKAEKLQIVNQLPANMVHLYSIVEECDARFDEKTIEEMLEIISGYA

Entity 5 Entity 5 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC1
Molecular weight formula_weight	25117.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

MDQENERNISRLWRAFRTVKEMVKDRGYFITQEEVELPLEDFKAKYCDSMGRPQRKMMSFQANPTEESISKFPDMGSLWVEFCDEPSVGVKTMKTFVIHIQEKNFQTGIFVYQNNITPSAMKLVPSIPPATIETFNEAALVVNITHHELVPKHIRLSSDEKRELLKRYRLKESQLPRIQRADPVALYLGLKRGEVVKIIRKSETSGRYASYRICM

Entity 6 Entity 6 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC2
Molecular weight formula_weight	17931.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

MSDYEEAFNDGNENFEDFDVEHFSDEETYEEKPQFKDGETTDANGKTIVTGGNGPEDFQQHEQIRRKTLKEKAIPKDQRATTPYMTKYERARILGTRALQISMNAPVFVDLEGETDPLRIAMKELAEKKIPLVIRRYLPDGSFEDWSVEELIVDL

Entity 7 Entity 7 polymer

Description description	DNA-directed RNA polymerase III subunit RPC8
Molecular weight formula_weight	24349.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

MFILSKIADLVRIPPDQFHRDTISAITHQLNNKFANKIIPNVGLCITIYDLLTVEEGQLKPGDGSSYINVTFRAVVFKPFLGEIVTGWISKCTAEGIKVSLLGIFDDIFIPQNMLFEGCYYTPEESAWIWPMDEETKLYFDVNEKIRFRIEREVFVDVKPKSPKERELEERAQLENEIEGKNEETPQNEKPPAYALLGSCQTDGMGLVSWWE

Entity 8 Entity 8 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC3
Molecular weight formula_weight	16525.4 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

MSNTLFDDIFQVSEVDPGRYNKVCRIEAASTTQDQCKLTLDINVELFPVAAQDSLTVTIASSLNLEDTPANDSSATRSWRPPQAGDRSLADDYDYVMYGTAYKFEEVSKDLIAVYYSFGGLLMRLEGNYRNLNNLKQENAYLLIRR

Entity 9 Entity 9 polymer

Description description	DNA-directed RNA polymerase III subunit RPC10
Molecular weight formula_weight	12525.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

MLSFCPSCNNMLLITSGDSGVYTLACRSCPYEFPIEGIEIYDRKKLPRKEVDDVLGGGWDNVDQTKTQCPNYDTCGGESAYFFQLQIRSADEPMTTFYKCVNCGHRWKEN

Entity 10 Entity 10 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC5
Molecular weight formula_weight	8290.7 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J

MIVPVRCFSCGKVVGDKWESYLNLLQEDELDEGTALSRLGLKRYCCRRMILTHVDLIEKFLRYNPLEKRD

Entity 11 Entity 11 polymer

Description description	DNA-directed RNA polymerases I and III subunit RPAC2
Molecular weight formula_weight	16167.9 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

MTEDIEQKKTATEVTPQEPKHIQEEEEQDVDMTGDEEQEEEPDREKIKLLTQATSEDGTSASFQIVEEDHTLGNALRYVIMKNPDVEFCGYSIPHPSENLLNIRIQTYGETTAVDALQKGLKDLMDLCDVVESKFTEKIKSM

Entity 12 Entity 12 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC4
Molecular weight formula_weight	7730.0 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L

MSREGFQIPTNLDAAAAGTSQARTATLKYICAECSSKLSLSRTDAVRCKDCGHRILLKARTKRLVQFEAR

Entity 13 Entity 13 polymer

Description description	DNA-directed RNA polymerase III subunit RPC5
Molecular weight formula_weight	32178.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M

MSIDNKLFVTEEDEEDRTQDRADVEDESNDIDMIADENGTNSAIANEQEEKSEEVKAEDDTGEEEEDDPVIEEFPLKISGEEESLHVFQYANRPRLVGRKPAEHPFISAARYKPKSHLWEIDIPLDEQAFYNKDKAESEWNGVNVQTLKGVGVENNGQYAAFVKDMQVYLVPIERVAQLKPFFKYIDDANVTRKQEDARRNPNPSSQRAQVVTMSVKSVNDPSQNRLTGSLLAHKVADEEANIELTWAEGTFEQFKDTIVKEAEDKTLVALEKQEDYIDNLV

Entity 14 Entity 14 polymer

Description description	DNA-directed RNA polymerase III subunit RPC4
Molecular weight formula_weight	46751.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	N

MSSNKGNGRLPSLKDSSSNGGGSAKPSLKFKPKAVARKSKEEREAAASKVKLEEESKRGNDKKHFNNKNKRVTGAGGQQRRMAKYLNNTHVISSGPLAAGNFVSEKGDLRRGFIKSEGSGSSLVQKGLETIDNGAESSENEAEDDDNEGVASKSKKKFNMGKEFEARNLIEDEDDGESEKSSDVDMDDEEWRSKRIEQLFPVRPVRVRHEDVETVKREIQEALSEKPTREPTPSVKTEPVGTGLQSYLEERERQVNEKLADLGLEKEFQSVDGKEAAAELELLNADHQHILRKLKKMNNKPERFMVFQLPTRLPAFERPAVKEEKEDMETQASDPSKKKKNIKKKDTKDALSTRELAGKVGSIRVHKSGKLSVKIGNVVMDIGKGAETTFLQDVIALSIADDASSAELLGRVDGKIVVTPQI

Entity 15 Entity 15 polymer

Description description	DNA-directed RNA polymerase III subunit RPC3
Molecular weight formula_weight	74112.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	O

MDELLGEALSAENQTGESTVESEKLVTPEDVMTISSLEQRTLNPDLFLYKELVKAHLGERAASVIGMLVALGRLSVRELVEKIDGMDVDSVKTTLVSLTQLRCVKYLQETAISGKKTTYYYYNEEGIHILLYSGLIIDEIITQMRVNDEEEHKQLVAEIVQNVISLGSLTVEDYLSSVTSDSMKYTISSLFVQLCEMGYLIQISKLHYTPIEDLWQFLYEKHYKNIPRNSPLSDLKKRSQAKMNAKTDFAKIINKPNELSQILTVDPKTSLRIVKPTVSLTINLDRFMKGRRSKQLINLAKTRVGSVTAQVYKIALRLTEQKSPKIRDPLTQTGLLQDLEEAKSFQDEAELVEEKTPGLTFNAIDLARHLPAELDLRGSLLSRKPSDNKKRSGSNAAASLPSKKLKTEDGFVIPALPAAVSKSLQESGDTQEEDEEEEDLDADTEDPHSASLINSHLKILASSNFPFLNETKPGVYYVPYSKLMPVLKSSVYEYVIASTLGPSAMRLSRCIRDNKLVSEKIINSTALMKEKDIRSTLASLIRYNSVEIQEVPRTADRSASRAVFLFRCKETHSYNFMRQNLEWNMANLLFKKEKLKQENSTLLKKANRDDVKGRENELLLPSELNQLKMVNERELNVFARLSRLLSLWEVFQMA

Entity 16 Entity 16 polymer

Description description	DNA-directed RNA polymerase III subunit RPC6
Molecular weight formula_weight	36174.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	P

MSGMIENGLQLSDNAKTLHSQMMSKGIGALFTQQELQKQMGIGSLTDLMSIVQELLDKNLIKLVKQNDELKFQGVLESEAQKKATMSAEEALVYSYIEASGREGIWSKTIKARTNLHQHVVLKCLKSLESQRYVKSVKSVKFPTRKIYMLYSLQPSVDITGGPWFTDGELDIEFINSLLTIVWRFISENTFPNGFKNFENGPKKNVFYAPNVKNYSTTQEILEFITAAQVANVELTPSNIRSLCEVLVYDDKLEKVTHDCYRVTLESILQMNQGEGEPEAGNKALEDEEEFSIFNYFKMFPASKHDKEVVYFDEWTI

Entity 17 Entity 17 polymer

Description description	DNA-directed RNA polymerase III subunit RPC7
Molecular weight formula_weight	27753.0 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Q

MSSYRGGSRGGGSNYMSNLPFGLGYGDVGKNHITEFPSIPLPINGPITNKERSLAVKYINFGKTVKDGPFYTGSMSLIIDQQENSKSGKRKPNIILDEDDTNDGIERYSDKYLKKRKIGISIDDHPYNLNLFPNELYNVMGINKKKLLAISKFNNADDVFTGTGLQDENIGLSMLAKLKELAEDVDDASTGDGAAKGSKTGEGEDDDLADDDFEEDEDEEDDDDYNAEKYFNNGDDDDYGDEEDPNEEAAF

Entity 18 Entity 18 polymer

Description description	TATA-box-binding protein
Molecular weight formula_weight	27042.3 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	U

MADEERLKEFKEANKIVFDPNTRQVWENQNRDGTKPATTFQSEEDIKRAAPESEKDTSATSGIVPTLQNIVATVTLGCRLDLKTVALHARNAEYNPKRFAAVIMRIREPKTTALIFASGKMVVTGAKSEDDSKLASRKYARIIQKIGFAAKFTDFKIQNIVGSCDVKFPIRLEGLAFSHGTFSSYEPELFPGLIYRMVKPKIVLLIFVSGKIVLTGAKQREEIYQAFEAIYPVLSEFRKM

Source Source

Source organism organism	Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Common name common_name	;Baker's yeast ;
NCBI taxonomy ID ncbi_taxonomy_id	559292
Host organism host_organism	Escherichia coli

Entity 19 Entity 19 polymer

Description description	Transcription factor IIIB 70 kDa subunit
Molecular weight formula_weight	67011.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	V

MPVCKNCHGTEFERDLSNANNDLVCKACGVVSEDNPIVSEVTFGETSAGAAVVQGSFIGAGQSHAAFGGSSALESREATLNNARRKLRAVSYALHIPEYITDAAFQWYKLALANNFVQGRRSQNVIASCLYVACRKEKTHHMLIDFSSRLQVSVYSIGATFLKMVKKLHITELPLADPSLFIQHFAEKLDLADKKIKVVKDAVKLAQRMSKDWMFEGRRPAGIAGACILLACRMNNLRRTHTEIVAVSHVAEETLQQRLNEFKNTKAAKLSVQKFRENDVEDGEARPPSFVKNRKKERKIKDSLDKEEMFQTSEEALNKNPILTQVLGEQELSSKEVLFYLKQFSERRARVVERIKATNGIDGENIYHEGSENETRKRKLSEVSIQNEHVEGEDKETEGTEEKVKKVKTKTSEEKKENESGHFQDAIDGYSLETDPYCPRNLHLLPTTDTYLSKVSDDPDNLEDVDDEELNAHLLNEEASKLKERIWIGLNADFLLEQESKRLKQEADIATGNTSVKKKRTRRRNNTRSDEPTKTVDAAAAIGLMSDLQDKSGLHAALKAAEESGDFTTADSVKNMLQKASFSKKINYDAIDGLFR

Source Source

Source organism organism	Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Common name common_name	;Baker's yeast ;
NCBI taxonomy ID ncbi_taxonomy_id	559292
Host organism host_organism	Escherichia coli

Entity 20 Entity 20 polymer

Description description	;Transcription factor TFIIIB component B'' ;
Molecular weight formula_weight	67801.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	W

MSSIVNKSGTRFAPKVRQRRAATGGTPTPKPRTPQLFIPESKEIEEDNSDNDKGVDENETAIVEKPSLVGERSLEGFTLTGTNGHDNEIGDEGPIDASTQNPKADVIEDNVTLKPAPLQTHRDQKVPRSSRLASLSKDNESRPSFKPSFLDSSSNSNGTARRLSTISNKLPKKIRLGSITENDMNLKTFKRHRVLGKPSSAKKPAGAHRISIVSKISPPTAMTDSLDRNEFSSETSTSREADENENYVISKVKDIPKKVRDGESAKYFIDEENFTMAELCKPNFPIGQISENFEKSKMAKKAKLEKRRHLRELRMRARQEFKPLHSLTKEEQEEEEEKRKEERDKLLNADIPESDRKAHTAIQLKLNPDGTMAIDEETMVVDRHKNASIENEYKEKVDENPFANLYNYGSYGRGSYTDPWTVEEMIKFYKALSMWGTDFNLISQLYPYRSRKQVKAKFVNEEKKRPILIELALRSKLPPNFDEYCCEIKKNIGTVADFNEKLIELQNEHKHHMKEIEEAKNTAKEEDQTAQRLNDANLNKKGSGGIMTNDLKVYRKTEVVLGTIDDLKRKKLKERNNDDNEDNEGSEEEPEIDQ

Source Source

Source organism organism	Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
Common name common_name	;Baker's yeast ;
NCBI taxonomy ID ncbi_taxonomy_id	559292
Host organism host_organism	Escherichia coli

Entity 21 Entity 21 polymer

Description description	RNA
Molecular weight formula_weight	1868.2 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	R

GUUGCC

Entity 22 Entity 22 polymer

Description description	Non-Template DNA
Molecular weight formula_weight	24885.9 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	X

CGTCCACTATTTTCGGCTACTATAAATAAATGTTTTTTTCGCAGTCTATGCGGTTAACAGTAACCCTTCGTGGACATTTGG

Entity 23 Entity 23 polymer

Description description	Template-DNA
Molecular weight formula_weight	25041.1 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	Y

CCAAATGTCCACGAAGGGTTACTTCGGCAACCCATAGTTGCGAAAAAAACATTTATTTATAGTAGCCGAAAATAGTGGACG

Entity 24 Entity 24 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	7

▶

Unit-cell length a length_a	1.000 Å
Unit-cell length b length_b	1.000 Å
Unit-cell length c length_c	1.000 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	1

Space group space_group	P 1
Space-group number int_tables_number	1
Crystal system crystal_system	—

Resolution resolution	4.300 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	4.30 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	29951

RNA Polymerase III initially transcribing complex

1. Protein Identity and Related Structures Protein Identity & Related Structures

DNA-directed RNA polymerase III subunit RPC1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerase III subunit RPC2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerases I and III subunit RPAC1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerase III subunit RPC9

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerases I, II, and III subunit RPABC1

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerases I, II, and III subunit RPABC2

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerase III subunit RPC8

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerases I, II, and III subunit RPABC3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerase III subunit RPC10

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

DNA-directed RNA polymerases I, II, and III subunit RPABC5

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer