SAXSdb — 6n7t

▼

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

DNA primase/helicase

Enterobacteria phage T7

State in the Current Structure

Assembly	Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Associated Components	Method and Experimental Conditions	Structure Quality
1	Protein–DNA Homooligomer Protein × 6 DNA 1 PDB declaration: heptameric（7） Consistent with all polymer counts	Chain A； UniProt 1–566 Chain B； UniProt 1–566 Chain C； UniProt 1–566 Chain D； UniProt 1–566 Chain E； UniProt 1–566 Chain F； UniProt 1–566	Mutation：E343Q	DNA (25-MER) × 1 TTP THYMIDINE-5'-TRIPHOSPHATE × 5 MG MAGNESIUM ION × 5	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 3.90 Å

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

Other PDB	Difference from Current Entry 6N7T	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
1CR0 CRYSTAL STRUCTURE OF THE HELICASE DOMAIN OF THE GENE4 PROTEIN OF BACTERIOPHAGE T7 Deposited 1999-08-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 271–566（296 aa） Fragment：HELICASE DOMAIN	Not recorded	SO4 SULFATE ION × 12	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；298 K；AMMONIUM SULFATE, ACES, pH 9.00, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.30 Å R-free 0.298
1CR1 CRYSTAL STRUCTURE OF THE HELICASE DOMAIN OF THE GENE 4 PROTEIN OF BACTERIOPHAGE T7: COMPLEX WITH DTTP Deposited 1999-08-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 271–566（296 aa） Fragment：HELICASE DOMAIN	Not recorded	SO4 SULFATE ION × 12 TTP THYMIDINE-5'-TRIPHOSPHATE × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；298 K；AMMONIUM SULFATE, ACES, pH 9, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.30 Å R-free 0.288
1CR2 CRYSTAL STRUCTURE OF THE HELICASE DOMAIN OF THE GENE 4 PROTEIN OF BACTERIOPHAGE T7: COMPLEX WITH DATP Deposited 1999-08-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 271–566（296 aa） Fragment：HELICASE DOMAIN	Not recorded	SO4 SULFATE ION × 12 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；298 K；ammonium sulfate, ACES, pH 9.00, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.30 Å R-free 0.296
1CR4 CRYSTAL STRUCTURE OF THE HELICASE DOMAIN OF THE GENE 4 PROTEIN OF BACTERIOPHAGE T7: COMPLEX WITH DTDP Deposited 1999-08-12	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 271–566（296 aa） Fragment：HELICASE DOMAIN	Not recorded	SO4 SULFATE ION × 12 TYD THYMIDINE-5'-DIPHOSPHATE × 6	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 9；298 K；AMMONIUM SULFATE, ACES, pH 9.00, VAPOR DIFFUSION, SITTING DROP, temperature 298K	Resolution 2.50 Å R-free 0.287
1E0J gp4d helicase from phage T7 ADPNP complex Deposited 2000-03-30	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 261–549（289 aa） Fragment：DOMAIN 4D Chain B 261–549（289 aa） Fragment：DOMAIN 4D Chain C 261–549（289 aa） Fragment：DOMAIN 4D	Not recorded	ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 4 MG MAGNESIUM ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions pH 9.5；pH 9.50	Resolution 3.00 Å R-free 0.304
1E0J gp4d helicase from phage T7 ADPNP complex Deposited 2000-03-30	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain D 261–549（289 aa） Fragment：DOMAIN 4D Chain E 261–549（289 aa） Fragment：DOMAIN 4D Chain F 261–549（289 aa） Fragment：DOMAIN 4D	Not recorded	ANP PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER × 4 MG MAGNESIUM ION × 4	X-RAY DIFFRACTION X-ray crystallization conditions pH 9.5；pH 9.50	Resolution 3.00 Å R-free 0.304
1E0K gp4d helicase from phage T7 Deposited 2000-03-30	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain A 261–549（289 aa） Fragment：DOMAIN 4D Chain B 261–549（289 aa） Fragment：DOMAIN 4D Chain C 261–549（289 aa） Fragment：DOMAIN 4D	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 9.5；pH 9.50	Resolution 3.30 Å R-free 0.308
1E0K gp4d helicase from phage T7 Deposited 2000-03-30	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein homooligomer Homooligomer；Protein × 6 PDB declaration: hexameric	Chain D 261–549（289 aa） Fragment：DOMAIN 4D Chain E 261–549（289 aa） Fragment：DOMAIN 4D Chain F 261–549（289 aa） Fragment：DOMAIN 4D	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions pH 9.5；pH 9.50	Resolution 3.30 Å R-free 0.308
1NUI Crystal Structure of the primase fragment of Bacteriophage T7 primase-helicase protein Deposited 2003-01-31	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–255（255 aa） Fragment：residues 1-255	Mutation：M64G	ZN ZINC ION × 1 MG MAGNESIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.3；295 K；Sodium Formate, MES, DTT, ATP, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 2.90 Å R-free 0.277
1NUI Crystal Structure of the primase fragment of Bacteriophage T7 primase-helicase protein Deposited 2003-01-31	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain B 1–255（255 aa） Fragment：residues 1-255	Mutation：M64G	ZN ZINC ION × 1 MG MAGNESIUM ION × 2	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.3；295 K；Sodium Formate, MES, DTT, ATP, pH 6.3, VAPOR DIFFUSION, HANGING DROP, temperature 295K	Resolution 2.90 Å R-free 0.277
1Q57 The Crystal Structure of the Bifunctional Primase-Helicase of Bacteriophage T7 Deposited 2003-08-06	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 7 PDB declaration: heptameric	Chain A 64–566（503 aa） Chain B 64–566（503 aa） Chain C 64–566（503 aa） Chain D 64–566（503 aa） Chain E 64–566（503 aa） Chain F 64–566（503 aa） Chain G 64–566（503 aa）	Mutation：G317V, K318M Mutation：G317V, K318M Mutation：G317V, K318M Mutation：G317V, K318M Mutation：G317V, K318M Mutation：G317V, K318M Mutation：G317V, K318M	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；pH 7.2；277 K；MES, sodium citrate, pH 7.2, VAPOR DIFFUSION, SITTING DROP, temperature 277K	Resolution 3.45 Å R-free 0.326
5IKN Crystal Structure of the T7 Replisome in the Absence of DNA Deposited 2016-03-03	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 13 PDB declaration: tridecameric	Chain D 64–549（486 aa） Chain E 64–549（486 aa） Chain F 64–549（486 aa） Chain G 64–549（486 aa） Chain H 64–549（486 aa） Chain I 64–549（486 aa） Chain J 64–549（486 aa）	Not recorded	No recorded non-water small molecule	X-RAY DIFFRACTION X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；295.15 K；1.47-1.62M Sodium Formate 0.1M Tris pH 7.5	Resolution 4.80 Å R-free 0.318
6N7I Structure of bacteriophage T7 E343Q mutant gp4 helicase-primase in complex with ssDNA, dTTP, AC dinucleotide and CTP (gp4(5)-DNA) Deposited 2018-11-27	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 6 PDB declaration: heptameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	TTP THYMIDINE-5'-TRIPHOSPHATE × 4 MG MAGNESIUM ION × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.20 Å
6N7N Structure of bacteriophage T7 E343Q mutant gp4 helicase-primase in complex with ssDNA, dTTP, AC dinucleotide and CTP (form I) Deposited 2018-11-27	Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 6 PDB declaration: heptameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	TTP THYMIDINE-5'-TRIPHOSPHATE × 5 MG MAGNESIUM ION × 5	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
6N7S Structure of bacteriophage T7 E343Q mutant gp4 helicase-primase in complex with ssDNA, dTTP, AC dinucleotide and CTP (form II) Deposited 2018-11-28	Different ligand/ion Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 6 PDB declaration: heptameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	TTP THYMIDINE-5'-TRIPHOSPHATE × 4 MG MAGNESIUM ION × 4	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.60 Å
6N7V Structure of bacteriophage T7 gp4 (helicase-primase, E343Q mutant) in complex with ssDNA, dTTP, AC dinucleotide, and CTP (from multiple lead complexes) Deposited 2018-11-28	Different structure-quality metrics	Assembly 1 Protein–DNA Homooligomer；Protein × 6 PDB declaration: heptameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	TTP THYMIDINE-5'-TRIPHOSPHATE × 5 MG MAGNESIUM ION × 5	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.80 Å
6N9U Structure of bacteriophage T7 lagging-strand DNA polymerase (D5A/E7A) interacting with primase domains of two gp4 subunits bound to an RNA/DNA hybrid and dTTP (from LagS1) Deposited 2018-12-04	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 3 PDB declaration: pentameric	Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q	ZN ZINC ION × 1 TTP THYMIDINE-5'-TRIPHOSPHATE × 1 MG MAGNESIUM ION × 2	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.70 Å
6N9V Structure of bacteriophage T7 lagging-strand DNA polymerase (D5A/E7A) and gp4 (helicase/primase) bound to DNA including RNA/DNA hybrid, and an incoming dTTP (LagS1) Deposited 2018-12-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: nonameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	TTP THYMIDINE-5'-TRIPHOSPHATE × 6 MG MAGNESIUM ION × 7 ZN ZINC ION × 1	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
6N9W Structure of bacteriophage T7 lagging-strand DNA polymerase (D5A/E7A) and gp4 (helicase/primase) bound to DNA including RNA/DNA hybrid, and an incoming dTTP (LagS2) Deposited 2018-12-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: nonameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	ZN ZINC ION × 1 TTP THYMIDINE-5'-TRIPHOSPHATE × 5 MG MAGNESIUM ION × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.00 Å
6N9X Structure of bacteriophage T7 lagging-strand DNA polymerase (D5A/E7A) and gp4 (helicase/primase) bound to DNA including RNA/DNA hybrid, and an incoming dTTP (LagS3) Deposited 2018-12-04	Different oligomeric state Different ligand/ion Different structure-quality metrics	Assembly 1 Other combination Heteromer；Protein × 7 PDB declaration: nonameric	Chain A 1–566（566 aa） Chain B 1–566（566 aa） Chain C 1–566（566 aa） Chain D 1–566（566 aa） Chain E 1–566（566 aa） Chain F 1–566（566 aa）	Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q Mutation：E343Q	ZN ZINC ION × 1 TTP THYMIDINE-5'-TRIPHOSPHATE × 5 MG MAGNESIUM ION × 6	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 4.10 Å

17 other PDB entries and 20 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	PRIM_BPT7
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–566； UniProt 1–566 Author chain B； PDBConstruct 1–566； UniProt 1–566 Author chain C； PDBConstruct 1–566； UniProt 1–566 Author chain D； PDBConstruct 1–566； UniProt 1–566 Author chain E； PDBConstruct 1–566； UniProt 1–566 Author chain F； PDBConstruct 1–566； UniProt 1–566

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	6n7t
Deposition date deposition_date	2018-11-28
Structure title title	Structure of bacteriophage T7 E343Q mutant gp4 helicase-primase in complex with ssDNA, dTTP, AC dinucleotide and CTP (form III)
Keywords keywords	helicase, ATPase, hexamer, DNA replication, HYDROLASE, TRANSFERASE-DNA complex; HYDROLASE,TRANSFERASE/DNA
Experimental Method method	ELECTRON MICROSCOPY

▼

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier	40.00 Å
Radius of gyration Rg (electron density) rg_electron	39.69 Å
Forward intensity I(0) i0	548741000.00
Molecular weight molecular_weight	184700.0 kDa
Excluded volume excluded_volume	228570 Å³
Envelope volume envelope_volume	312700 Å³
Hydration-shell volume shell_volume	63483 Å³
Envelope diameter envelope_diameter	128.9 Å
Shell Rg shell_rg	47.23 Å
Envelope Rg envelope_rg	39.19 Å
Shape Rg shape_rg	39.79 Å
Total Rg total_rg	39.73 Å
Total atoms total_atoms	12890
Residues n_residues	1626
Spherical-harmonic order n_harmonics	20
q range q_range	— – 0.5000 Å⁻¹
Data points n_points	101
Shell type shell_type	directional
Solvent electron density solvent_density	0.3340 e/Å³
Shell contrast contrast_shell	0.0300 e/Å³
CRYSOL version crysol_version	4.1.3

▼

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax	127.9 Å
Rg (real space) rg_real	39.90 Å
Rg uncertainty (real space) rg_real_error	1.13 Å
I(0) (real space) i0_real	5.4870e+08
I(0) uncertainty (real space) i0_real_error	1.0230e+07
Rg (reciprocal space) rg_reciprocal	40.00 Å
I(0) (reciprocal space) i0_reciprocal	548800000.0000
Solution quality estimate total_estimate	0.9038
Solution quality rating solution_quality	EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks	1
Primary peak position r_peak_primary	49.2 Å
Skewness Skewness skewness	0.189
Kurtosis Kurtosis kurtosis	-0.613
Angular range angular_range	— – 0.1950 Å⁻¹
Current regularization parameter α current_alpha	0.0000
Highest regularization parameter α highest_alpha	196500000.0000
Real-space data points n_real_points	40
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.937; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.935

▶

5. Crystallography and Experiment 5. Crystallography & Experiment

▶

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Description description	DNA primase/helicase
Molecular weight formula_weight	62734.4 kDa
EC 编号 ec_number	2.7.7.-,3.6.4.12
Mutation mutation	E343Q
Source method src_method	man
Copy count entity_count	6

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E,F
Atom count atom_count	12890

MDNSHDSDSVFLYHIPCDNCGSSDGNSLFSDGHTFCYVCEKWTAGNEDTKERASKRKPSGGKPMTYNVWNFGESNGRYSALTARGISKETCQKAGYWIAKVDGVMYQVADYRDQNGNIVSQKVRDKDKNFKTTGSHKSDALFGKHLWNGGKKIVVTEGEIDMLTVMELQDCKYPVVSLGHGASAAKKTCAANYEYFDQFEQIILMFDMDEAGRKAVEEAAQVLPAGKVRVAVLPCKDANECHLNGHDREIMEQVWNAGPWIPDGVVSALSLRERIREHLSSEESVGLLFSGCTGINDKTLGARGGEVIMVTSGSGMGKSTFVRQQALQWGTAMGKKVGLAMLQESVEETAEDLIGLHNRVRLRQSDSLKREIIENGKFDQWFDELFGNDTFHLYDSFAEAETDRLLAKLAYMRSGLGCDVIILDHISIVVSASGESDERKMIDNLMTKLKGFAKSTGVVLVVICHLKNPDKGKAHEEGRPVSITDLRGSGALRQLSDTIIALERNQQGDMPNLVLVRILKCRFTGDTGIAGYMEYNKETGWLEPSSYSGEEESHSESTDWSNDTDF

来源 Source

来源生物 organism	Enterobacteria phage T7
NCBI Class编号 ncbi_taxonomy_id	10760
宿主生物 host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	DNA (25-MER)
Molecular weight formula_weight	7594.9 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polydeoxyribonucleotide
Chain IDs strand_id	T

TGGTCTTTTTTTTTTTTTTTTTTTT

Entity 3 Entity 3 non-polymer

Description description	THYMIDINE-5'-TRIPHOSPHATE
Molecular weight formula_weight	482.2 kDa
Source method src_method	syn
Copy count entity_count	5

Entity 4 Entity 4 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	5

▼

7. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id	6n7tA00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	6n7tB00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	6n7tC00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	6n7tD00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	6n7tE00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

Domain ID domain_id	6n7tF00
Class class	3 — Alpha Beta
Architecture architecture	40 — 3-Layer(aba) Sandwich
Topology topology	50 — Rossmann fold
Homologous superfamily homologous superfamily	300 — P-loop containing nucleotide triphosphate hydrolases

▶

8. Citations (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	3.90 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	24302

fit	/app/data/saxs_computation/n7/6n7t/6n7t.fit
pddf	/app/data/pr_computation/n7/6n7t/6n7t.pr.out
profile	/app/data/saxs_computation/n7/6n7t/6n7t.dat

Structure of bacteriophage T7 E343Q mutant gp4 helicase-primase in complex with ssDNA, dTTP, AC dinucleotide and CTP (form III)

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

DNA primase/helicase

State in the Current Structure

Other States of the Same Protein in the Database

SAXS scattering curve SAXS Profile

P(r) Distance Distribution P(r) Distribution

2. Structure Basics 2. Structure Basics

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

5. Crystallography and Experiment 5. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

6. Entities and Polymers Entities & Polymers (4)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

Entity 2 Entity 2 polymer

Polymer Polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

7. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)