7zwc

Structure of SNAPc:TBP-TFIIA-TFIIB sub-complex bound to U5 snRNA promoter

Method: ELECTRON MICROSCOPY

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

Transcription initiation factor IIB

Homo sapiens

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein–DNA	Heteromer	Protein 8 DNA 2	TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	1
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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	2
Chains and sequence ranges	Author chain O； PDBConstruct 1–339； UniProt 1–339

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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	3
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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	4
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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	5
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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	6
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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	7
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 8 DNA 2	Transcription initiation factor IIB × 1 （Q00403） TATA-box-binding protein × 1 （P20226） 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） Non-template strand × 1 Template strand × 1 ZINC ION × 2	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	8
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	7zwc
Deposition date deposition_date	2022-05-19
Structure title title	Structure of SNAPc:TBP-TFIIA-TFIIB sub-complex bound to U5 snRNA promoter
Keywords keywords	RNA polymerase II, Pol II, PIC, SNAPc, snRNA, U5 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.

7zwc__assembly_1__model_1

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

Download this curve (.dat)

7zwc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7zwc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	42.79 Å
Rg (electron density)	42.54 Å
Total Rg	42.84 Å
Atom count	13944
Residues	1583
Excluded volume	243220 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7zwc__assembly_1__model_1`	decameric （10）	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 (11)

Entity 1 Entity 1 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
Atom count atom_count	13944

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 2 Entity 2 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 3 Entity 3 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 4 Entity 4 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 5 Entity 5 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 6 Entity 6 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 7 Entity 7 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 8 Entity 8 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 9 Entity 9 polymer

Description description	Non-template strand
Molecular weight formula_weight	29678.0 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	N

AGTAGACACCATCAGTGTACTAGGACCCGAAAATTGAGTTACAGAAGTAACTGGTATACTCTGGTTTCTCTTCAGATCGCATAAAACCTGGCAGGG

Entity 10 Entity 10 polymer

Description description	Template strand
Molecular weight formula_weight	29543.9 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	T

CCCTGCCAGGTTTTATGCGATCTGAAGAGAAACCAGAGTATACCAGTTACTTCTGTAACTCAATTTTCGGGTCCTAGTACACTGATGGTGTCTACT

Entity 11 Entity 11 non-polymer

Description description	ZINC ION
Molecular weight formula_weight	65.4 kDa
Source method src_method	syn
Copy count entity_count	2

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6. Fold Classification (SCOP + CATH) 1 domains

CATH v4.4 (1 domains)

Domain ID domain_id	7zwcM01
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	472 — Cyclin A; domain 1
Homologous superfamily homologous superfamily	10 — Cyclin-like

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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	3.20 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	85787

Structure of SNAPc:TBP-TFIIA-TFIIB sub-complex bound to U5 snRNA promoter

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

Transcription initiation factor IIB

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TATA-box-binding protein

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Transcription initiation factor IIA subunit 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

Transcription initiation factor IIA subunit 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

snRNA-activating protein complex subunit 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

snRNA-activating protein complex subunit 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

snRNA-activating protein complex subunit 4

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

snRNA-activating protein complex subunit 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7zwc__assembly_1__model_1

7zwc__assembly_1__model_1 | I(q)

7zwc__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

5. Entities and Polymers Entities & Polymers (11)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer