4v1m

Architecture of the RNA polymerase II-Mediator core transcription initiation complex

Method: ELECTRON MICROSCOPY

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

DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB1_YEAST
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–1733； UniProt 1–1733

DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2

OrganismNot specified

UniProt P08518

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB2_YEAST
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–1224； UniProt 1–1224

DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3

OrganismNot specified

UniProt P16370

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB3_YEAST
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–318； UniProt 1–318

DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1

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 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	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	4
Chains and sequence ranges	Author chain E； PDBConstruct 1–215； UniProt 1–215

DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2

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 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	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	5
Chains and sequence ranges	Author chain F； PDBConstruct 1–155； UniProt 1–155

DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3

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 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	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	6
Chains and sequence ranges	Author chain H； PDBConstruct 1–146； UniProt 1–146

DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9

OrganismNot specified

UniProt P27999

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB9_YEAST
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain I； PDBConstruct 1–122； UniProt 1–122

DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5

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 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	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	8
Chains and sequence ranges	Author chain J； PDBConstruct 1–70； UniProt 1–70

DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11

OrganismNot specified

UniProt P38902

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Other combination	Heteromer	Protein 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4 × 1 （P40422） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	Consistent with all polymers

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB11_YEAST
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain K； PDBConstruct 1–120； UniProt 1–120

DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4

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 10 DNA 2 RNA 1	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1 × 1 （P04050） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2 × 1 （P08518） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3 × 1 （P16370） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1 × 1 （P20434） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2 × 1 （P20435） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3 × 1 （P20436） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9 × 1 （P27999） DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5 × 1 （P22139） DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11 × 1 （P38902） 5'-D(APAPGPTPAPCPTPTPGPAP)-3' × 1 5'-D(CPCPAPGPGPAP)-3' × 1 ;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ; × 1 ZINC ION × 8 MAGNESIUM ION × 1	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	10
Chains and sequence ranges	Author chain L； PDBConstruct 1–70； UniProt 1–70

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	4v1m
Deposition date deposition_date	2014-09-29
Structure title title	Architecture of the RNA polymerase II-Mediator core transcription initiation complex
Keywords keywords	TRANSCRIPTION, TRANSCRIPTION INITIATION, RNA POLYMERASE II, GENERAL TRANSCRIPTION FACTORS; 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.

4v1m__assembly_1__model_1

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

Download this curve (.dat)

4v1m__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4v1m__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	48.08 Å
Rg (electron density)	47.57 Å
Total Rg	47.82 Å
Atom count	29447
Residues	3655
Excluded volume	522700 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4v1m__assembly_1__model_1`	tridecameric （13）	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 (15)

Entity 1 Entity 1 polymer

Description description	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1
Molecular weight formula_weight	191821.6 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	29447

MVGQQYSSAPLRTVKEVQFGLFSPEEVRAISVAKIRFPETMDETQTRAKIGGLNDPRLGSIDRNLKCQTCQEGMNECPGHFGHIDLAKPVFHVGFIAKIKKVCECVCMHCGKLLLDEHNELMRQALAIKDSKKRFAAIWTLCKTKMVCETDVPSEDDPTQLVSRGGCGNTQPTIRKDGLKLVGSWKKDRATGDADEPELRVLSTEEILNIFKHISVKDFTSLGFNEVFSRPEWMILTCLPVPPPPVRPSISFNESQRGEDDLTFKLADILKANISLETLEHNGAPHHAIEEAESLLQFHVATYMDNDIAGQPQALQKSGRPVKSIRARLKGKEGRIRGNLMGKRVDFSARTVISGDPNLELDQVGVPKSIAKTLTYPEVVTPYNIDRLTQLVRNGPNEHPGAKYVIRDSGDRIDLRYSKRAGDIQLQYGWKVERHIMDNDPVLFNRQPSLHKMSMMAHRVKVIPYSTFRLNLSVTSPYNADFDGDEMNLHVPQSEETRAELSQLCAVPLQIVSPQSNKPCMGIVQDTLCGIRKLTLRDTFIELDQVLNMLYWVPDWDGVIPTPAIIKPKPLWSGKQILSVAIPNGIHLQRFDEGTTLLSPKDNGMLIIDGQIIFGVVEKKTVGSSNGGLIHVVTREKGPQVCAKLFGNIQKVVNFWLLHNGFSTGIGDTIADGPTMREITETIAEAKKKVLDVTKEAQANLLTAKHGMTLRESFEDNVVRFLNEARDKAGRLAEVNLKDLNNVKQMVMAGSKGSFINIAQMSACVGQQSVEGKRIAFGFVDRTLPHFSKDDYSPESKGFVENSYLRGLTPQEFFFHAMGGREGLIDTAVKTAETGYIQRRLVKALEDIMVHYDNTTRNSLGNVIQFIYGEDGMDAAHIEKQSLDTIGGSDAAFEKRYRVDLLNTDHTLDPSLLESGSEILGDLKLQVLLDEEYKQLVKDRKFLREVFVDGEANWPLPVNIRRIIQNAQQTFHIDHTKPSDLTIKDIVLGVKDLQENLLVLRGKNEIIQNAQRDAVTLFCCLLRSRLATRRVLQEYRLTKQAFDWVLSNIEAQFLRSVVHPGEMVGVLAAQSIGEPATQMTLNTFHFAGVASKKVTSGVPRLKEILNVAKNMKTPSLTVYLEPGHAADQEQAKLIRSAIEHTTLKSVTIASEIYYDPDPRSTVIPEDEEIIQLHFSLLDEEAEQSFDQQSPWLLRLELDRAAMNDKDLTMGQVGERIKQTFKNDLFVIWSEDNDEKLIIRCRVVRPKSLDAETEAEEDHMLKKIENTMLENITLRGVENIERVVMMKYDRKVPSPTGEYVKEPEWVLETDGVNLSEVMTVPGIDPTRIYTNSFIDIMEVLGIEAGRAALYKEVYNVIASDGSYVNYRHMALLVDVMTTQGGLTSVTRHGFNRSNTGALMRCSFEETVEILFEAGASAELDDCRGVSENVILGQMAPIGTGAFDVMIDEESLVKYMPEQKITEIEDGQDGGVTPYSNESGLVNADLDVKDELMFSPLVDSGSNDAMAGGFTAYGGADYGEATSPFGAYGEAPTSPGFGVSSPGFSPTSPTYSPTSPAYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPAYSPTSPSYSPTSPSYSPTSPSYSPTSPSYSPTSPNYSPTSPSYSPTSPGYSPGSPAYSPKQDEQKHNENENSR

Entity 2 Entity 2 polymer

Description description	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB2
Molecular weight formula_weight	138937.3 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

MSDLANSEKYYDEDPYGFEDESAPITAEDSWAVISAFFREKGLVSQQLDSFNQFVDYTLQDIICEDSTLILEQLAQHTTESDNISRKYEISFGKIYVTKPMVNESDGVTHALYPQEARLRNLTYSSGLFVDVKKRTYEAIDVPGRELKYELIAEESEDDSESGKVFIGRLPIMLRSKNCYLSEATESDLYKLKECPFDMGGYFIINGSEKVLIAQERSAGNIVQVFKKAAPSPISHVAEIRSALEKGSRFISTLQVKLYGREGSSARTIKATLPYIKQDIPIVIIFRALGIIPDGEILEHICYDVNDWQMLEMLKPCVEDGFVIQDRETALDFIGRRGTALGIKKEKRIQYAKDILQKEFLPHITQLEGFESRKAFFLGYMINRLLLCALDRKDQDDRDHFGKKRLDLAGPLLAQLFKTLFKKLTKDIFRYMQRTVEEAHDFNMKLAINAKTITSGLKYALATGNWGEQKKAMSSRAGVSQVLNRYTYSSTLSHLRRTNTPIGRDGKLAKPRQLHNTHWGLVCPAETPEGQACGLVKNLSLMSCISVGTDPMPIITFLSEWGMEPLEDYVPHQSPDATRVFVNGVWHGVHRNPARLMETLRTLRRKGDINPEVSMIRDIREKELKIFTDAGRVYRPLFIVEDDESLGHKELKVRKGHIAKLMATEYQDIEGGFEDVEEYTWSSLLNEGLVEYIDAEEEESILIAMQPEDLEPAEANEENDLDVDPAKRIRVSHHATTFTHCEIHPSMILGVAASIIPFPDHNQSPRNTYQSAMGKQAMGVFLTNYNVRMDTMANILYYPQKPLGTTRAMEYLKFRELPAGQNAIVAIACYSGYNQEDSMIMNQSSIDRGLFRSLFFRSYMDQEKKYGMSITETFEKPQRTNTLRMKHGTYDKLDDDGLIAPGVRVSGEDVIIGKTTPISPDEEELGQRTAYHSKRDASTPLRSTENGIVDQVLVTTNQDGLKFVKVRVRTTKIPQIGDKFASRHGQKGTIGITYRREDMPFTAEGIVPDLIINPHAIPSRMTVAHLIECLLSKVAALSGNEGDASPFTDITVEGISKLLREHGYQSRGFEVMYNGHTGKKLMAQIFFGPTYYQRLRHMVDDKIHARARGPMQVLTRQPVEGRSRDGGLRFGEMERDCMIAHGAASFLKERLMEASDAFRVHICGICGLMTVIAKLNHNQFECKGCDNKIDIYQIHIPYAAKLLFQELMAMNITPRLYTDRSRDF

Entity 3 Entity 3 polymer

Description description	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB3
Molecular weight formula_weight	35330.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

MSEEGPQVKIREASKDNVDFILSNVDLAMANSLRRVMIAEIPTLAIDSVEVETNTTVLADEFIAHRLGLIPLQSMDIEQLEYSRDCFCEDHCDKCSVVLTLQAFGESESTTNVYSKDLVIVSNLMGRNIGHPIIQDKEGNGVLICKLRKGQELKLTCVAKKGIAKEHAKWGPAAAIEFEYDPWNKLKHTDYWYEQDSAKEWPQSKNCEYEDPPNEGDPFDYKAQADTFYMNVESVGSIPVDQVVVRGIDTLQKKVASILLALTQMDQDKVNFASGDNNTASNMLGSNEDVMMTGAEQDPYSNASQMGNTGSGGYDNAW

Entity 4 Entity 4 polymer

Description description	DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1
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 5 Entity 5 polymer

Description description	DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 2
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 6 Entity 6 polymer

Description description	DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 3
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 7 Entity 7 polymer

Description description	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB9
Molecular weight formula_weight	14308.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

MTTFRFCRDCNNMLYPREDKENNRLLFECRTCSYVEEAGSPLVYRHELITNIGETAGVVQDIGSDPTLPRSDRECPKCHSRENVFFQSQQRRKDTSMVLFFVCLSCSHIFTSDQKNKRTQFS

Entity 8 Entity 8 polymer

Description description	DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 5
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 9 Entity 9 polymer

Description description	DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB11
Molecular weight formula_weight	13633.5 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

MNAPDRFELFLLGEGESKLKIDPDTKAPNAVVITFEKEDHTLGNLIRAELLNDRKVLFAAYKVEHPFFARFKLRIQTTEGYDPKDALKNACNSIINKLGALKTNFETEWNLQTLAADDAF

Entity 10 Entity 10 polymer

Description description	DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 4
Molecular weight formula_weight	7730.0 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	L

MSREGFQIPTNLDAAAAGTSQARTATLKYICAECSSKLSLSRTDAVRCKDCGHRILLKARTKRLVQFEAR

Entity 11 Entity 11 polymer

Description description	5'-D(APAPGPTPAPCPTPTPGPAP)-3'
Molecular weight formula_weight	3068.0 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	N

AAGTACTTGA

Entity 12 Entity 12 polymer

Description description	5'-D(CPCPAPGPGPAP)-3'
Molecular weight formula_weight	1914.2 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polyribonucleotide
Chain IDs strand_id	P

CCAGGA

Entity 13 Entity 13 polymer

Description description	;5'-D(TPCPAPAPGPTPAPCPTPTPTPTPTPCP CPBRUPGPGPTPC)-3' ;
Molecular weight formula_weight	6130.8 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	T

TCAAGTACTTTTTCCUGGTC

Entity 14 Entity 14 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	8

Entity 15 Entity 15 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	1

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

Resolution resolution	6.600 Å
Low-resolution limit resolution_low	— Å
R factor r_factor	—
R_work r_work	—
R_free r_free	—

Resolution resolution	6.60 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	14777

Architecture of the RNA polymerase II-Mediator core transcription initiation complex

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

DNA-DIRECTED RNA POLYMERASE II SUBUNIT RPB1

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 RPB2

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

DNA-DIRECTED RNA POLYMERASES I, II, AND III SUBUNIT RPABC 1

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 RPABC 2

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 RPABC 3

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 RPABC 5

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 RPB11

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 RPABC 4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer