7zx8

Structure of SNAPc containing Pol II pre-initiation complex bound to U1 snRNA promoter (OC)

Method: ELECTRON MICROSCOPY

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

DNA-directed RNA polymerase subunit

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A8D1DPV6_PIG
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–1970； UniProt 1–1970

DNA-directed RNA polymerase subunit beta

OrganismNot specified

UniProt I3LGP4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	I3LGP4_PIG
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–1174； UniProt 78–1251

DNA-directed RNA polymerase II subunit RPB3

OrganismNot specified

UniProt I3LCH3

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	I3LCH3_PIG
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–275； UniProt 1–275

RNA polymerase II subunit D

OrganismNot specified

UniProt A0A287ADR4

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A287ADR4_PIG
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–142； UniProt 43–184

DNA-directed RNA polymerase II subunit E

OrganismNot specified

UniProt I3LSI7

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	I3LSI7_PIG
Isoform	—
PDB entities	5
Chains and sequence ranges	Author chain E； PDBConstruct 1–210； UniProt 1–210

DNA-directed RNA polymerase II subunit F

OrganismNot specified

UniProt F1SKN8

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	F1SKN8_PIG
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain F； PDBConstruct 1–127； UniProt 1–127

DNA-directed RNA polymerase II subunit RPB7

OrganismNot specified

UniProt I3LJZ9

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	I3LJZ9_PIG
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain G； PDBConstruct 1–172； UniProt 1–172

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

OrganismNot specified

UniProt A0A4X1ULF2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A4X1ULF2_PIG
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain H； PDBConstruct 1–150； UniProt 1–150

DNA-directed RNA polymerase II subunit RPB9

OrganismNot specified

UniProt P60899

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB9_PIG
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain I； PDBConstruct 1–125； UniProt 1–125

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

OrganismNot specified

UniProt A0A4X1VYD0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A4X1VYD0_PIG
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain J； PDBConstruct 1–67； UniProt 1–67

RNA polymerase II subunit J

OrganismNot specified

UniProt A0A4X1UK25

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	A0A4X1UK25_PIG
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain K； PDBConstruct 1–117； UniProt 1–117

RNA polymerase II subunit K

OrganismNot specified

UniProt I3LN51

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	I3LN51_PIG
Isoform	—
PDB entities	12
Chains and sequence ranges	Author chain L； PDBConstruct 1–58； UniProt 1–58

Transcription initiation factor IIB

Homo sapiens

UniProt Q00403

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TF2B_HUMAN
Isoform	—
PDB entities	13
Chains and sequence ranges	Author chain M； PDBConstruct 1–316； UniProt 1–316

TATA-box-binding protein

Homo sapiens

UniProt P20226

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TBP_HUMAN
Isoform	—
PDB entities	15
Chains and sequence ranges	Author chain O； PDBConstruct 1–339； UniProt 1–339

General transcription factor IIF subunit 1

Homo sapiens

UniProt P35269

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	T2FA_HUMAN
Isoform	—
PDB entities	16
Chains and sequence ranges	Author chain Q； PDBConstruct 1–517； UniProt 1–517

General transcription factor IIF subunit 2

Homo sapiens

UniProt P13984

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	T2FB_HUMAN
Isoform	—
PDB entities	17
Chains and sequence ranges	Author chain R； PDBConstruct 1–249； UniProt 1–249

Transcription initiation factor IIA subunit 1

Homo sapiens

UniProt P52655

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TF2AA_HUMAN
Isoform	—
PDB entities	19
Chains and sequence ranges	Author chain U； PDBConstruct 1–376； UniProt 1–376

Transcription initiation factor IIA subunit 2

Homo sapiens

UniProt P52657

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	T2AG_HUMAN
Isoform	—
PDB entities	20
Chains and sequence ranges	Author chain V； PDBConstruct 1–109； UniProt 1–109

snRNA-activating protein complex subunit 1

Homo sapiens

UniProt Q16533

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SNPC1_HUMAN
Isoform	—
PDB entities	21
Chains and sequence ranges	Author chain a； PDBConstruct 1–368； UniProt 1–368

snRNA-activating protein complex subunit 3

Homo sapiens

UniProt Q92966

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SNPC3_HUMAN
Isoform	—
PDB entities	22
Chains and sequence ranges	Author chain b； PDBConstruct 1–411； UniProt 1–411

snRNA-activating protein complex subunit 4

Homo sapiens

UniProt Q5SXM2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 5 × 1 （O75971） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SNPC4_HUMAN
Isoform	—
PDB entities	23
Chains and sequence ranges	Author chain c； PDBConstruct 1–1469； UniProt 1–1469

snRNA-activating protein complex subunit 5

Homo sapiens

UniProt O75971

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 22 DNA 2	DNA-directed RNA polymerase subunit × 1 （A0A8D1DPV6） DNA-directed RNA polymerase subunit beta × 1 （I3LGP4） DNA-directed RNA polymerase II subunit RPB3 × 1 （I3LCH3） RNA polymerase II subunit D × 1 （A0A287ADR4） DNA-directed RNA polymerase II subunit E × 1 （I3LSI7） DNA-directed RNA polymerase II subunit F × 1 （F1SKN8） DNA-directed RNA polymerase II subunit RPB7 × 1 （I3LJZ9） DNA-directed RNA polymerases I, II, and III subunit RPABC3 × 1 （A0A4X1ULF2） DNA-directed RNA polymerase II subunit RPB9 × 1 （P60899） DNA-directed RNA polymerases I, II, and III subunit RPABC5 × 1 （A0A4X1VYD0） RNA polymerase II subunit J × 1 （A0A4X1UK25） RNA polymerase II subunit K × 1 （I3LN51） Transcription initiation factor IIB × 1 （Q00403） Non-template strand × 1 TATA-box-binding protein × 1 （P20226） General transcription factor IIF subunit 1 × 1 （P35269） General transcription factor IIF subunit 2 × 1 （P13984） Template strand × 1 Transcription initiation factor IIA subunit 1 × 1 （P52655） Transcription initiation factor IIA subunit 2 × 1 （P52657） snRNA-activating protein complex subunit 1 × 1 （Q16533） snRNA-activating protein complex subunit 3 × 1 （Q92966） snRNA-activating protein complex subunit 4 × 1 （Q5SXM2） ZINC ION × 11 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	SNPC5_HUMAN
Isoform	—
PDB entities	24
Chains and sequence ranges	Author chain d； PDBConstruct 1–98； UniProt 1–98

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	7zx8
Deposition date deposition_date	2022-05-20
Structure title title	Structure of SNAPc containing Pol II pre-initiation complex bound to U1 snRNA promoter (OC)
Keywords keywords	RNA polymerase II, Pol II, PIC, SNAPc, snRNA, U1 promoter, TRANSCRIPTION; 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.

7zx8__assembly_1__model_1

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

Download this curve (.dat)

7zx8__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7zx8__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	65.30 Å
Rg (electron density)	65.17 Å
Total Rg	65.08 Å
Atom count	49534
Residues	5967
Excluded volume	874470 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7zx8__assembly_1__model_1`	24-meric （24）	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 (26)

Entity 1 Entity 1 polymer

Description description	DNA-directed RNA polymerase subunit
Molecular weight formula_weight	217450.1 kDa
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	49534

MHGGGPPSGDSACPLRTIKRVQFGVLSPDELKRMSVTEGGIKYPETTEGGRPKLGGLMDPRQGVIERTGRCQTCAGNMTECPGHFGHIELAKPVFHVGFLVKTMKVLRCVCFFCSKLLVDSNNPKIKDILAKSKGQPKKRLTHVYDLCKGKNICEGGEEMDNKFGVEQPEGDEDLTKEKGHGGCGRYQPRIRRSGLELYAEWKHVNEDSQEKKILLSPERVHEIFKRISDEECFVLGMEPRYARPEWMIVTVLPVPPLSVRPAVVMQGSARNQDDLTHKLADIVKINNQLRRNEQNGAAAHVIAEDVKLLQFHVATMVDNELPGLPRAMQKSGRPLKSLKQRLKGKEGRVRGNLMGKRVDFSARTVITPDPNLSIDQVGVPRSIAANMTFAEIVTPFNIDRLQELVRRGNSQYPGAKYIIRDNGDRIDLRFHPKPSDLHLQTGYKVERHMCDGDIVIFNRQPTLHKMSMMGHRVRILPWSTFRLNLSVTTPYNADFDGDEMNLHLPQSLETRAEIQELAMVPRMIVTPQSNRPVMGIVQDTLTAVRKFTKRDVFLERGEVMNLLMFLSTWDGKVPQPAILKPRPLWTGKQIFSLIIPGHINCIRTHSTHPDDEDSGPYKHISPGDTKVVVENGELIMGILCKKSLGTSAGSLVHISYLEMGHDITRLFYSNIQTVINNWLLIEGHTIGIGDSIADSKTYQDIQNTIKKAKQDVIEVIEKAHNNELEPTPGNTLRQTFENQVNRILNDARDKTGSSAQKSLSEYNNFKSMVVSGAKGSKINISQVIAVVGQQNVEGKRIPFGFKHRTLPHFIKDDYGPESRGFVENSYLAGLTPTEFFFHAMGGREGLIDTAVKTAETGYIQRRLIKSMESVMVKYDATVRNSINQVVQLRYGEDGLAGESVEFQNLATLKPSNKAFEKKFRFDYTNERALRRTLQEDLVKDVLSNAHIQNELEREFERMREDREVLRVIFPTGDSKVVLPCNLLRMIWNAQKIFHINPRLPSDLHPIKVVEGVKELSKKLVIVNGDDPLSRQAQENATLLFNIHLRSTLCSRRMAEEFRLSGEAFDWLLGEIESKFNQAIAHPGEMVGALAAQSLGEPATQMTLNTFHYAGVSAKNVTLGVPRLKELINISKKPKTPSLTVFLLGQSARDAERAKDILCRLEHTTLRKVTANTAIYYDPNPQSTVVAEDQEWVNVYYEMPDFDVARISPWLLRVELDRKHMTDRKLTMEQIAEKINAGFGDDLNCIFNDDNAEKLVLRIRIMNSDENKMQEEEEVVDKMDDDVFLRCIESNMLTDMTLQGIEQISKVYMHLPQTDNKKKIIITEDGEFKALQEWILETDGVSLMRVLSEKDVDPVRTTSNDIVEIFTVLGIEAVRKALERELYHVISFDGSYVNYRHLALLCDTMTCRGHLMAITRHGVNRQDTGPLMKCSFEETVDVLMEAAAHGESDPMKGVSENIMLGQLAPAGTGCFDLLLDAEKCKYGMEIPTNIPGLGAAGPTGMFFGSAPSPMGGISPAMTPWNQGATPAYGAWSPSVGSGMTPGAAGFSPSAASDASGFSPGYSPAWSPTPGSPGSPGPSSPYIPSPGGAMSPSYSPTSPAYEPRSPGGYTPQSPSYSPTSPSYSPTSPSYSPTSPNYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPNYSPTSPNYTPTSPSYSPTSPSYSPTSPNYTPTSPNYSPTSPSYSPTSPSYSPTSPSYSPSSPRYTPQSPTYTPSSPSYSPSSPSYSPTSPKYTPTSPSYSPSSPEYTPTSPKYSPTSPKYSPTSPKYSPTSPTYSPTTPKYSPTSPTYSPTSPVYTPTSPKYSPTSPTYSPTSPKYSPTSPTYSPTSPKGSTYSPTSPGYSPTSPTYSLTSPAISPDDSDEEN

Entity 2 Entity 2 polymer

Description description	DNA-directed RNA polymerase subunit beta
Molecular weight formula_weight	134041.4 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

MYDADEDMQYDEDDDEITPDLWQEACWIVISSYFDEKGLVRQQLDSFDEFIQMSVQRIVEDAPPIDLQAEAQHASGEVEEPPRYLLKFEQIYLSKPTHWERDGAPSPMMPNEARLRNLTYSAPLYVDITKTVIKEGEEQLQTQHQKTFIGKIPIMLRSTYCLLNGLTDRDLCELNECPLDPGGYFIINGSEKVLIAQEKMATNTVYVFAKKDSKYAYTGECRSCLENSSRPTSTIWVSMLARGGQGAKKSAIGQRIVATLPYIKQEVPIIIVFRALGFVSDRDILEHIIYDFEDPEMMEMVKPSLDEAFVIQEQNVALNFIGSRGAKPGVTKEKRIKYAKEVLQKEMLPHVGVSDFCETKKAYFLGYMVHRLLLAALGRRELDDRDHYGNKRLDLAGPLLAFLFRGMFKNLLKEVRIYAQKFIDRGKDFNLELAIKTRIISDGLKYSLATGNWGDQKKAHQARAGVSQVLNRLTFASTLSHLRRLNSPIGRDGKLAKPRQLHNTLWGMVCPAETPEGHAVGLVKNLALMAYISVGSQPSPILEFLEEWSMENLEEISPAAIADATKIFVNGCWVGIHKDPEQLMNTLRKLRRQMDIIVSEVSMIRDIREREIRIYTDAGRICRPLLIVEKQKLLLKKRHIDQLKEREYNNYSWQDLVASGVVEYIDTLEEETVMLAMTPDDLQEKEVAYCSTYTHCEIHPSMILGVCASIIPFPDHNQSPRNTYQSAMGKQAMGVYITNFHVRMDTLAHVLYYPQKPLVTTRSMEYLRFRELPAGINSIVAIASYTGYNQEDSVIMNRSAVDRGFFRSVFYRSYKEQESKKGFDQEEVFEKPTRETCQGMRHAIYDKLDDDGLIAPGVRVSGDDVIIGKTVTLPENEDELEGTNRRYTKRDCSTFLRTSETGIVDQVMVTLNQEGYKFCKIRVRSVRIPQIGDKFASRHGQKGTCGIQYRQEDMPFTCEGITPDIIINPHAIPSRMTIGHLIECLQGKVSANKGEIGDATPFNDAVNVQKISNLLSDYGYHLRGNEVLYNGFTGRKITSQIFIGPTYYQRLKHMVDDKIHSRARGPIQILNRQPMEGRSRDGGLRFGEMERDCQIAHGAAQFLRERLFEASDPYQVHVCNLCGIMAIANTRTHTYECRGCRNKTQISLVRMPYACKLLFQELMSMSIAPRMMSV

Entity 3 Entity 3 polymer

Description description	DNA-directed RNA polymerase II subunit RPB3
Molecular weight formula_weight	31439.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

MPYANQPTVRITELTDENVKFIIENTDLAVANSIRRVFIAEVPIIAIDWVQIDANSSVLHDEFIAHRLGLIPLTSDDIVDKLQYSRDCTCEEFCPECSVEFTLDVRCNEDQTRHVTSRDLISNSPRVIPVTSRNRDNDPSDYVEQDDILIVKLRKGQELRLRAYAKKGFGKEHAKWNPTAGVAFEYDPDNALRHTVYPKPEEWPKSEYSELDEDESQAPYDPNGKPERFYYNVESCGSLRPETIVLSALSGLKKKLSDLQTQLSHEIQSDVLTIN

Entity 4 Entity 4 polymer

Description description	RNA polymerase II subunit D
Molecular weight formula_weight	16331.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

MAAGGSDPRAGDVEEDASQLIFPKEFETAETLLNSEVHMLLEHRKQQNESAEDEQELSEVFMKTLNYTARFSRFKNRETIASVRSLLLQKKLHKFELACLANLCPETAEESKALIPSLEGRFEDEELQQILDDIQTKRSFQY

Entity 5 Entity 5 polymer

Description description	DNA-directed RNA polymerase II subunit E
Molecular weight formula_weight	24644.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

MDDEEETYRLWKIRKTIMQLCHDRGYLVTQDELDQTLEEFKAQFGDKPSEGRPRRTDLTVLVAHNDDPTDQMFVFFPEEPKVGIKTIKVYCQRMQEENITRALIVVQQGMTPSAKQSLVDMAPKYILEQFLQQELLINITEHELVPEHVVMTKEEVTELLARYKLRENQLPRIQAGDPVARYFGIKRGQVVKIIRPSETAGRYITYRLVQ

Entity 6 Entity 6 polymer

Description description	DNA-directed RNA polymerase II subunit F
Molecular weight formula_weight	14477.0 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

MSDNEDNFDGDDFDDVEEDEGLDDLENAEEEGQENVEILPSGERPQANQKRITTPYMTKYERARVLGTRALQIAMCAPVMVELEGETDPLLIAMKELKARKIPIIIRRYLPDGSYEDWGVDELIISD

Entity 7 Entity 7 polymer

Description description	DNA-directed RNA polymerase II subunit RPB7
Molecular weight formula_weight	19314.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

MFYHISLEHEILLHPRYFGPNLLNTVKQKLFTEVEGTCTGKYGFVIAVTTIDNIGAGVIQPGRGFVLYPVKYKAIVFRPFKGEVVDAVVTQVNKVGLFTEIGPMSCFISRHSIPSEMEFDPNSNPPCYKTMDEDIVIQQDDEIRLKIVGTRVDKNDIFAIGSLMDDYLGLVS

Entity 8 Entity 8 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC3
Molecular weight formula_weight	17162.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

MAGILFEDIFDVKDIDPEGKKFDRVSRLHCESESFKMDLILDVNIQIYPVDLGDKFRLVIASTLYEDGTLDDGEYNPTDDRPSRADQFEYVMYGKVYRIEGDETSTEAATRLSAYVSYGGLLMRLQGDANNLHGFEVDSRVYLLMKKLAF

Entity 9 Entity 9 polymer

Description description	DNA-directed RNA polymerase II subunit RPB9
Molecular weight formula_weight	14541.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

MEPDGTYEPGFVGIRFCQECNNMLYPKEDKENRILLYACRNCDYQQEADNSCIYVNKITHEVDELTQIIADVSQDPTLPRTEDHPCQKCGHKEAVFFQSHSARAEDAMRLYYVCTAPHCGHRWTE

Entity 10 Entity 10 polymer

Description description	DNA-directed RNA polymerases I, II, and III subunit RPABC5
Molecular weight formula_weight	7655.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J

MIIPVRCFTCGKIVGNKWEAYLGLLQAEYTEGDALDALGLKRYCCRRMLLAHVDLIEKLLNYAPLEK

Entity 11 Entity 11 polymer

Description description	RNA polymerase II subunit J
Molecular weight formula_weight	13310.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

MNAPPAFESFLLFEGEKKITINKDTKVPNACLFTINKEDHTLGNIIKSQLLKDPQVLFAGYKVPHPLEHKIIIRVQTTPDYSPQEAFTNAITDLISELSLLEERFRVAIKDKQEGIE

Entity 12 Entity 12 polymer

Description description	RNA polymerase II subunit K
Molecular weight formula_weight	7018.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	L

MDTQKDVQPPKQQPMIYICGECHTENEIKSRDPIRCRECGYRIMYKKRTKRLVVFDAR

Entity 13 Entity 13 polymer

Description description	Transcription initiation factor IIB
Molecular weight formula_weight	34877.9 kDa
EC 编号 ec_number	2.3.1.48
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M

MASTSRLDALPRVTCPNHPDAILVEDYRAGDMICPECGLVVGDRVIDVGSEWRTFSNDKATKDPSRVGDSQNPLLSDGDLSTMIGKGTGAASFDEFGNSKYQNRRTMSSSDRAMMNAFKEITTMADRINLPRNIVDRTNNLFKQVYEQKSLKGRANDAIASACLYIACRQEGVPRTFKEICAVSRISKKEIGRCFKLILKALETSVDLITTGDFMSRFCSNLCLPKQVQMAATHIARKAVELDLVPGRSPISVAAAAIYMASQASAEKRTQKEIGDIAGVADVTIRQSYRLIYPRAPDLFPTDFKFDTPVDKLPQL

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 14 Entity 14 polymer

Description description	Non-template strand
Molecular weight formula_weight	29969.1 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	N

GCAAGTGACCGTGTGTGTAAAGAGTGAGGCGTATGAGGCTGTGTCGGGGCAGAGGCACAACGTTTCATACTTACCTGGCAGGGGAGATACCATGAT

Entity 15 Entity 15 polymer

Description description	TATA-box-binding protein
Molecular weight formula_weight	37729.9 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	O

MDQNNSLPPYAQGLASPQGAMTPGIPIFSPMMPYGTGLTPQPIQNTNSLSILEEQQRQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQAVAAAAVQQSTSQQATQGTSGQAPQLFHSQTLTTAPLPGTTPLYPSPMTPMTPITPATPASESSGIVPQLQNIVSTVNLGCKLDLKTIALRARNAEYNPKRFAAVIMRIREPRTTALIFSSGKMVCTGAKSEEQSRLAARKYARVVQKLGFPAKFLDFKIQNMVGSCDVKFPIRLEGLVLTHQQFSSYEPELFPGLIYRMIKPRIVLLIFVSGKVVLTGAKVRAEIYEAFENIYPILKGFRKTT

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 16 Entity 16 polymer

Description description	General transcription factor IIF subunit 1
Molecular weight formula_weight	58343.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	Q

MAALGPSSQNVTEYVVRVPKNTTKKYNIMAFNAADKVNFATWNQARLERDLSNKKIYQEEEMPESGAGSEFNRKLREEARRKKYGIVLKEFRPEDQPWLLRVNGKSGRKFKGIKKGGVTENTSYYIFTQCPDGAFEAFPVHNWYNFTPLARHRTLTAEEAEEEWERRNKVLNHFSIMQQRRLKDQDQDEDEEEKEKRGRRKASELRIHDLEDDLEMSSDASDASGEEGGRVPKAKKKAPLAKGGRKKKKKKGSDDEAFEDSDDGDFEGQEVDYMSDGSSSSQEEPESKAKAPQQEEGPKGVDEQSDSSEESEEEKPPEEDKEEEEEKKAPTPQEKKRRKDSSEESDSSEESDIDSEASSALFMAKKKTPPKRERKPSGGSSRGNSRPGTPSAEGGSTSSTLRAAASKLEQGKRVSEMPAAKRLRLDTGPQSLSGKSTPQPPSGKTTPNSGDVQVTEDAVRRYLTRKPMTTKDLLKKFQTKKTGLSSEQTVNVLAQILKRLNPERKMINDKMHFSLKE

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 17 Entity 17 polymer

Description description	General transcription factor IIF subunit 2
Molecular weight formula_weight	28427.3 kDa
EC 编号 ec_number	3.6.4.12
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	R

MAERGELDLTGAKQNTGVWLVKVPKYLSQQWAKASGRGEVGKLRIAKTQGRTEVSFTLNEDLANIHDIGGKPASVSAPREHPFVLQSVGGQTLTVFTESSSDKLSLEGIVVQRAECRPAASENYMRLKRLQIEESSKPVRLSQQLDKVVTTNYKPVANHQYNIEYERKKKEDGKRARADKQHVLDMLFSAFEKHQYYNLKDLVDITKQPVVYLKEILKEIGVQNVKGIHKNTWELKPEYRHYQGEEKSD

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 18 Entity 18 polymer

Description description	Template strand
Molecular weight formula_weight	29261.7 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	T

ATCATGGTATCTCCCCTGCCAGGTAAGTATGAAACGTTGTGCCTCTGCCCCGACACAGCCTCATACGCCTCACTCTTTACACACACGGTCACTTGC

Entity 19 Entity 19 polymer

Description description	Transcription initiation factor IIA subunit 1
Molecular weight formula_weight	41544.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	U

MANSANTNTVPKLYRSVIEDVINDVRDIFLDDGVDEQVLMELKTLWENKLMQSRAVDGFHSEEQQLLLQVQQQHQPQQQQHHHHHHHQQAQPQQTVPQQAQTQQVLIPASQQATAPQVIVPDSKLIQHMNASNMSAAATAATLALPAGVTPVQQILTNSGQLLQVVRAANGAQYIFQPQQSVVLQQQVIPQMQPGGVQAPVIQQVLAPLPGGISPQTGVIIQPQQILFTGNKTQVIPTTVAAPTPAQAQITATGQQQPQAQPAQTQAPLVLQVDGTGDTSSEEDEDEEEDYDDDEEEDKEKDGAEDGQVEEEPLNSEDDVSDEEGQELFDTENVVVCQYDKIHRSKNKWKFHLKDGIMNLNGRDYIFSKAIGDAEW

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 20 Entity 20 polymer

Description description	Transcription initiation factor IIA subunit 2
Molecular weight formula_weight	12469.1 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	V

MAYQLYRNTTLGNSLQESLDELIQSQQITPQLALQVLLQFDKAINAALAQRVRNRVNFRGSLNTYRFCDNVWTFVLNDVEFREVTELIKVDKVKIVACDGKNTGSNTTE

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Escherichia coli

Entity 21 Entity 21 polymer

Description description	snRNA-activating protein complex subunit 1
Molecular weight formula_weight	43074.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	a

MGTPPGLQTDCEALLSRFQETDSVRFEDFTELWRNMKFGTIFCGRMRNLEKNMFTKEALALAWRYFLPPYTFQIRVGALYLLYGLYNTQLCQPKQKIRVALKDWDEVLKFQQDLVNAQHFDAAYIFRKLRLDRAFHFTAMPKLLSYRMKKKIHRAEVTEEFKDPSDRVMKLITSDVLEEMLNVHDHYQNMKHVISVDKSKPDKALSLIKDDFFDNIKNIVLEHQQWHKDRKNPSLKSKTNDGEEKMEGNSQETERCERAESLAKIKSKAFSVVIQASKSRRHRQVKLDSSDSDSASGQGQVKATRKKEKKERLKPAGRKMSLRNKGNVQNIHKEDKPLSLSMPVITEEEENESLSGTEFTASKKRRKH

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 22 Entity 22 polymer

Description description	snRNA-activating protein complex subunit 3
Molecular weight formula_weight	46812.6 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	b

MAEGSRGGPTCSGVGGRQDPVSGSGGCNFPEYELPELNTRAFHVGAFGELWRGRLRGAGDLSLREPPASALPGSQAADSDREDAAVARDLDCSLEAAAELRAVCGLDKLKCLEDGEDPEVIPENTDLVTLGVRKRFLEHREETITIDRACRQETFVYEMESHAIGKKPENSADMIEEGELILSVNILYPVIFHKHKEHKPYQTMLVLGSQKLTQLRDSIRCVSDLQIGGEFSNTPDQAPEHISKDLYKSAFFYFEGTFYNDKRYPECRDLSRTIIEWSESHDRGYGKFQTARMEDFTFNDLCIKLGFPYLYCHQGDCEHVIVITDIRLVHHDDCLDRTLYPLLIKKHWLWTRKCFVCKMYTARWVTNNDSFAPEDPCFFCDVCFRMLHYDSEGNKLGEFLAYPYVDPGTFN

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 23 Entity 23 polymer

Description description	snRNA-activating protein complex subunit 4
Molecular weight formula_weight	159645.2 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	c

MDVDAEREKITQEIKELERILDPGSSGSHVEISESSLESDSEADSLPSEDLDPADPPISEEERWGEASNDEDDPKDKTLPEDPETCLQLNMVYQEVIQEKLAEANLLLAQNREQQEELMRDLAGSKGTKVKDGKSLPPSTYMGHFMKPYFKDKVTGVGPPANEDTREKAAQGIKAFEELLVTKWKNWEKALLRKSVVSDRLQRLLQPKLLKLEYLHQKQSKVSSELERQALEKQGREAEKEIQDINQLPEEALLGNRLDSHDWEKISNINFEGSRSAEEIRKFWQNSEHPSINKQEWSREEEERLQAIAAAHGHLEWQKIAEELGTSRSAFQCLQKFQQHNKALKRKEWTEEEDRMLTQLVQEMRVGSHIPYRRIVYYMEGRDSMQLIYRWTKSLDPGLKKGYWAPEEDAKLLQAVAKYGEQDWFKIREEVPGRSDAQCRDRYLRRLHFSLKKGRWNLKEEEQLIELIEKYGVGHWAKIASELPHRSGSQCLSKWKIMMGKKQGLRRRRRRARHSVRWSSTSSSGSSSGSSGGSSSSSSSSSEEDEPEQAQAGEGDRALLSPQYMVPDMDLWVPARQSTSQPWRGGAGAWLGGPAASLSPPKGSSASQGGSKEASTTAAAPGEETSPVQVPARAHGPVPRSAQASHSADTRPAGAEKQALEGGRRLLTVPVETVLRVLRANTAARSCTQKEQLRQPPLPTSSPGVSSGDSVARSHVQWLRHRATQSGQRRWRHALHRRLLNRRLLLAVTPWVGDVVVPCTQASQRPAVVQTQADGLREQLQQARLASTPVFTLFTQLFHIDTAGCLEVVRERKALPPRLPQAGARDPPVHLLQASSSAQSTPGHLFPNVPAQEASKSASHKGSRRLASSRVERTLPQASLLASTGPRPKPKTVSELLQEKRLQEARAREATRGPVVLPSQLLVSSSVILQPPLPHTPHGRPAPGPTVLNVPLSGPGAPAAAKPGTSGSWQEAGTSAKDKRLSTMQALPLAPVFSEAEGTAPAASQAPALGPGQISVSCPESGLGQSQAPAASRKQGLPEAPPFLPAAPSPTPLPVQPLSLTHIGGPHVATSVPLPVTWVLTAQGLLPVPVPAVVSLPRPAGTPGPAGLLATLLPPLTETRAAQGPRAPALSSSWQPPANMNREPEPSCRTDTPAPPTHALSQSPAEADGSVAFVPGEAQVAREIPEPRTSSHADPPEAEPPWSGRLPAFGGVIPATEPRGTPGSPSGTQEPRGPLGLEKLPLRQPGPEKGALDLEKPPLPQPGPEKGALDLGLLSQEGEAATQQWLGGQRGVRVPLLGSRLPYQPPALCSLRALSGLLLHKKALEHKATSLVVGGEAERPAGALQASLGLVRGQLQDNPAYLLLRARFLAAFTLPALLATLAPQGVRTTLSVPSRVGSESEDEDLLSELELADRDGQPGCTTATCPIQGAPDSGKCSASSCLDTSNDPDDLDVLRTRHARHTRKRRRLV

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 24 Entity 24 polymer

Description description	snRNA-activating protein complex subunit 5
Molecular weight formula_weight	11343.4 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	d

MLSRLQELRKEEETLLRLKAALHDQLNRLKVEELALQSMISSRRGDEMLSSHTVPEQSHDMLVHVDNEASINQTTLELSTKSHVTEEEEEEEEEESDS

Source Source

Source organism organism	Homo sapiens
Common name common_name	human
NCBI taxonomy ID ncbi_taxonomy_id	9606
Host organism host_organism	Trichoplusia ni

Entity 25 Entity 25 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	11

Entity 26 Entity 26 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	1

▶

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	—

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

Resolution resolution	3.00 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	137246

Structure of SNAPc containing Pol II pre-initiation complex bound to U1 snRNA promoter (OC)

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

DNA-directed RNA polymerase subunit

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 subunit beta

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 II subunit RPB3

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

RNA polymerase II subunit D

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 II subunit E

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 II subunit F

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 II subunit RPB7

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 II subunit RPB9

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