3j1n

Cryo-EM map of a yeast minimal preinitiation complex interacting with the Mediator Head module

Method: ELECTRON MICROSCOPY

▼

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	Protein heterocomplex	Heteromer	Protein 12	DNA-directed RNA polymerase II subunit RPB2 × 1 （P08518） DNA-directed RNA polymerase II subunit RPB3 × 1 （P16370） DNA-directed RNA polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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 1–1455； UniProt 1–1455

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	Protein heterocomplex	Heteromer	Protein 12	DNA-directed RNA polymerase II subunit RPB1 × 1 （P04050） DNA-directed RNA polymerase II subunit RPB3 × 1 （P16370） DNA-directed RNA polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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	Protein heterocomplex	Heteromer	Protein 12	DNA-directed RNA polymerase II subunit RPB1 × 1 （P04050） DNA-directed RNA polymerase II subunit RPB2 × 1 （P08518） DNA-directed RNA polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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 1–268； UniProt 1–268

DNA-directed RNA polymerase II subunit RPB4

OrganismNot specified

UniProt P20433

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB4_YEAST
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–218； UniProt 4–221

DNA-directed RNA polymerase II subunit RPABC1

OrganismNot specified

UniProt P20434

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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 polymerase II subunit RPABC2

OrganismNot specified

UniProt P20435

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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 1–84； UniProt 72–155

DNA-directed RNA polymerase II subunit RPB7

OrganismNot specified

UniProt P34087

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB7_YEAST
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain G； PDBConstruct 1–171； UniProt 1–171

DNA-directed RNA polymerase II subunit RPABC3

OrganismNot specified

UniProt P20436

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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 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	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB9_YEAST
Isoform	—
PDB entities	9
Chains and sequence ranges	Author chain I； PDBConstruct 1–122； UniProt 1–122

DNA-directed RNA polymerase II subunit RPABC5

OrganismNot specified

UniProt P22139

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

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 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	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPABC4 × 1 （P40422）	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RPB11_YEAST
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain K； PDBConstruct 1–120； UniProt 1–120

DNA-directed RNA polymerase II subunit RPABC4

OrganismNot specified

UniProt P40422

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 12	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 polymerase II subunit RPB4 × 1 （P20433） DNA-directed RNA polymerase II subunit RPABC1 × 1 （P20434） DNA-directed RNA polymerase II subunit RPABC2 × 1 （P20435） DNA-directed RNA polymerase II subunit RPB7 × 1 （P34087） DNA-directed RNA polymerase II subunit RPABC3 × 1 （P20436） DNA-directed RNA polymerase II subunit RPB9 × 1 （P27999） DNA-directed RNA polymerase II subunit RPABC5 × 1 （P22139） DNA-directed RNA polymerase II subunit RPB11 × 1 （P38902）	Consistent with protein count

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

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.

▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id	3j1n
Deposition date deposition_date	2012-03-29
Structure title title	Cryo-EM map of a yeast minimal preinitiation complex interacting with the Mediator Head module
Keywords keywords	transcription, mediator head module, preinitiation complex, TRANSFERASE; TRANSFERASE
Experimental Method method	ELECTRON MICROSCOPY

▼

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.

3j1n__assembly_1__model_1

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

Download this curve (.dat)

3j1n__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3j1n__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	50.86 Å
Rg (electron density)	50.60 Å
Total Rg	50.82 Å
Atom count	19237
Residues	3894
Excluded volume	309310 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3j1n__assembly_1__model_1`	dodecameric （12）	Success	4.1.3-1-20251215 (887e7ef)	View Download

▶

4. Crystallography and Experiment 4. Crystallography & Experiment

▶

5. Entities and Polymers Entities & Polymers (12)

Entity 1 Entity 1 polymer

Description description	DNA-directed RNA polymerase II subunit RPB1
Molecular weight formula_weight	163180.0 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	A
Atom count atom_count	19237

MVGQQYSSAPLRTVKEVQFGLFSPEEVRAISVAKIRFPETMDETQTRAKIGGLNDPRLGSIDRNLKCQTCQEGMNECPGHFGHIDLAKPVFHVGFIAKIKKVCECVCMHCGKLLLDEHNELMRQALAIKDSKKRFAAIWTLCKTKMVCETDVPSEDDPTQLVSRGGCGNTQPTIRKDGLKLVGSWKKDRATGDADEPELRVLSTEEILNIFKHISVKDFTSLGFNEVFSRPEWMILTCLPVPPPPVRPSISFNESQRGEDDLTFKLADILKANISLETLEHNGAPHHAIEEAESLLQFHVATYMDNDIAGQPQALQKSGRPVKSIRARLKGKEGRIRGNLMGKRVDFSARTVISGDPNLELDQVGVPKSIAKTLTYPEVVTPYNIDRLTQLVRNGPNEHPGAKYVIRDSGDRIDLRYSKRAGDIQLQYGWKVERHIMDNDPVLFNRQPSLHKMSMMAHRVKVIPYSTFRLNLSVTSPYNADFDGDEMNLHVPQSEETRAELSQLCAVPLQIVSPQSNKPCMGIVQDTLCGIRKLTLRDTFIELDQVLNMLYWVPDWDGVIPTPAIIKPKPLWSGKQILSVAIPNGIHLQRFDEGTTLLSPKDNGMLIIDGQIIFGVVEKKTVGSSNGGLIHVVTREKGPQVCAKLFGNIQKVVNFWLLHNGFSTGIGDTIADGPTMREITETIAEAKKKVLDVTKEAQANLLTAKHGMTLRESFEDNVVRFLNEARDKAGRLAEVNLKDLNNVKQMVMAGSKGSFINIAQMSACVGQQSVEGKRIAFGFVDRTLPHFSKDDYSPESKGFVENSYLRGLTPQEFFFHAMGGREGLIDTAVKTAETGYIQRRLVKALEDIMVHYDNTTRNSLGNVIQFIYGEDGMDAAHIEKQSLDTIGGSDAAFEKRYRVDLLNTDHTLDPSLLESGSEILGDLKLQVLLDEEYKQLVKDRKFLREVFVDGEANWPLPVNIRRIIQNAQQTFHIDHTKPSDLTIKDIVLGVKDLQENLLVLRGKNEIIQNAQRDAVTLFCCLLRSRLATRRVLQEYRLTKQAFDWVLSNIEAQFLRSVVHPGEMVGVLAAQSIGEPATQMTLNTFHFAGVASKKVTSGVPRLKEILNVAKNMKTPSLTVYLEPGHAADQEQAKLIRSAIEHTTLKSVTIASEIYYDPDPRSTVIPEDEEIIQLHFSLLDEEAEQSFDQQSPWLLRLELDRAAMNDKDLTMGQVGERIKQTFKNDLFVIWSEDNDEKLIIRCRVVRPKSLDAETEAEEDHMLKKIENTMLENITLRGVENIERVVMMKYDRKVPSPTGEYVKEPEWVLETDGVNLSEVMTVPGIDPTRIYTNSFIDIMEVLGIEAGRAALYKEVYNVIASDGSYVNYRHMALLVDVMTTQGGLTSVTRHGFNRSNTGALMRCSFEETVEILFEAGASAELDDCRGVSENVILGQMAPIGTGAFDVMIDEESLVKYMP

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	30140.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

MSEEGPQVKIREASKDNVDFILSNVDLAMANSLRRVMIAEIPTLAIDSVEVETNTTVLADEFIAHRLGLIPLQSMDIEQLEYSRDCFCEDHCDKCSVVLTLQAFGESESTTNVYSKDLVIVSNLMGRNIGHPIIQDKEGNGVLICKLRKGQELKLTCVAKKGIAKEHAKWGPAAAIEFEYDPWNKLKHTDYWYEQDSAKEWPQSKNCEYEDPPNEGDPFDYKAQADTFYMNVESVGSIPVDQVVVRGIDTLQKKVASILLALTQMDQD

Entity 4 Entity 4 polymer

Description description	DNA-directed RNA polymerase II subunit RPB4
Molecular weight formula_weight	25106.8 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

STSTFQTRRRRLKKVEEEENAATLQLGQEFQLKQINHQGEEEELIALNLSEARLVIKEALVERRRAFKRSQKKHKKKHLKHENANDETTAVEDEDDDLDEDDVNADDDDFMHSETREKELESIDVLLEQTTGGNNKDLKNTMQYLTNFSRFRDQETVGAVIQLLKSTGLHPFEVAQLGSLACDTADEAKTLIPSLNNKISDDELERILKELSNLETLY

Entity 5 Entity 5 polymer

Description description	DNA-directed RNA polymerase II 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 polymerase II subunit RPABC2
Molecular weight formula_weight	9675.2 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

KAIPKDQRATTPYMTKYERARILGTRALQISMNAPVFVDLEGETDPLRIAMKELAEKKIPLVIRRYLPDGSFEDWSVEELIVDL

Entity 7 Entity 7 polymer

Description description	DNA-directed RNA polymerase II subunit RPB7
Molecular weight formula_weight	19081.1 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

MFFIKDLSLNITLHPSFFGPRMKQYLKTKLLEEVEGSCTGKFGYILCVLDYDNIDIQRGRILPTDGSAEFNVKYRAVVFKPFKGEVVDGTVVSCSQHGFEVQVGPMKVFVTKHLMPQDLTFNAGSNPPSYQSSEDVITIKSRIRVKIEGCISQVSSIHAIGSIKEDYLGAI

Entity 8 Entity 8 polymer

Description description	DNA-directed RNA polymerase II 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 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 10 Entity 10 polymer

Description description	DNA-directed RNA polymerase II 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 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 12 Entity 12 polymer

Description description	DNA-directed RNA polymerase II 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

▶

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	16.00 Å
Resolution测定Method resolution_method	projection matching
颗粒数 num_particles	51000

Cryo-EM map of a yeast minimal preinitiation complex interacting with the Mediator Head module

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 polymerase II subunit RPB4

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 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 polymerase II 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 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 polymerase II 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 polymerase II subunit RPABC5

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer