SAXSdb — 7n55

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

Polymerase acidic protein

Influenza A virus (strain swl A/California/04/2009 H1N1)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein homooligomer	Homooligomer	Protein 8	MANGANESE (II) ION × 16 SULFATE ION × 32 Hexa Vinylpyrrolidone K15 × 8 5-hydroxy-N-[2-(2-methoxypyridin-4-yl)ethyl]-2-(2-methylphenyl)-6-oxo-1,6-dihydropyrimidine-4-carboxamide × 8 water × 8	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	C3W5S0_I09A0
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 21–70； UniProt 1–50 Author chain A； PDBConstruct 74–197； UniProt 73–196

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	7n55
Deposition date deposition_date	2021-06-04
Structure title title	The crystal structure of the mutant I38T PA endonuclease (2009/H1N1/CALIFORNIA) in complex with SJ000988514
Keywords keywords	NUCLEASE, INFLUENZA, INHIBITOR RESISTANCE, VIRAL PROTEIN, Hydrolase-Inhibitor complex; VIRAL PROTEIN, Hydrolase/Inhibitor
Experimental Method method	X-RAY DIFFRACTION

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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.

7n55__assembly_1__model_1

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

Download this curve (.dat)

7n55__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

7n55__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	35.85 Å
Rg (electron density)	34.62 Å
Total Rg	35.09 Å
Atom count	12176
Residues	1440
Excluded volume	213740 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`7n55__assembly_1__model_1`	octameric （8）	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 (6)

Entity 1 Entity 1 polymer

Description description	Polymerase acidic protein
Molecular weight formula_weight	23136.3 kDa
EC 编号 ec_number	3.1.-.-
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1538

MGSSHHHHHHSSGLVPRGSHMEDFVRQCFNPMIVELAEKAMKEYGEDPKIETNKFAATCTHLEVCFMYSDGGSKHRFEIIEGRDRIMAWTVVNSICNTTGVEKPKFLPDLYDYKENRFIEIGVTRREVHIYYLEKANKIKSEKTHIHIFSFTGEEMATKADYTLDEESRARIKTRLFTIRQEMASRSLWDSFRQSER

Source Source

Source organism organism	Influenza A virus (strain swl A/California/04/2009 H1N1)
NCBI taxonomy ID ncbi_taxonomy_id	641501
Host organism host_organism	Escherichia coli BL21(DE3)

Entity 2 Entity 2 non-polymer

Description description	MANGANESE (II) ION
Molecular weight formula_weight	54.9 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 3 Entity 3 non-polymer

Description description	SULFATE ION
Molecular weight formula_weight	96.1 kDa
Source method src_method	syn
Copy count entity_count	4

Entity 4 Entity 4 non-polymer

Description description	Hexa Vinylpyrrolidone K15
Molecular weight formula_weight	668.9 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	5-hydroxy-N-[2-(2-methoxypyridin-4-yl)ethyl]-2-(2-methylphenyl)-6-oxo-1,6-dihydropyrimidine-4-carboxamide
Molecular weight formula_weight	380.4 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 6 Entity 6 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	16

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Unit-cell length a length_a	89.635 Å
Unit-cell length b length_b	89.635 Å
Unit-cell length c length_c	133.761 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	16

Space group space_group	I 4 2 2
Space-group number int_tables_number	97
Crystal system crystal_system	tetragonal

Resolution resolution	2.330 Å
Low-resolution limit resolution_low	46.000 Å
R factor r_factor	0.2284
R_work r_work	0.2263
R_free r_free	0.2677

The crystal structure of the mutant I38T PA endonuclease (2009/H1N1/CALIFORNIA) in complex with SJ000988514

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

Polymerase acidic protein

State in the Current Structure

Other States of the Same Protein in the Database

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7n55__assembly_1__model_1

7n55__assembly_1__model_1 | I(q)

7n55__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

7. Citations (1)

The crystal structure of the mutant I38T PA endonuclease (2009/H1N1/CALIFORNIA) in complex with SJ000988514

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

Polymerase acidic 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

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

7n55__assembly_1__model_1

7n55__assembly_1__model_1 | I(q)

7n55__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

Refinement Refinement

Diffraction experiment Diffraction

5. Entities and Polymers Entities & Polymers (6)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 water

7. Citations (1)