SAXSdb — 5fml

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

PB2 SUBUNIT OF INFLUENZA B POLYMERASE

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	PA SUBUNIT OF INFLUENZA B POLYMERASE × 1 （Q5V8Z9） MAGNESIUM ION × 2 GLYCEROL × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q5V8X3_9INFB
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–29； UniProt 742–770

PA SUBUNIT OF INFLUENZA B POLYMERASE

INFLUENZA B VIRUS

UniProt Q5V8Z9

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 2	PB2 SUBUNIT OF INFLUENZA B POLYMERASE × 1 （Q5V8X3） MAGNESIUM ION × 2 GLYCEROL × 1 water × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q5V8Z9_9INFB
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 6–202； UniProt 1–197

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	5fml
Deposition date deposition_date	2015-11-06
Structure title title	Crystal structure of the endonuclease from the PA subunit of influenza B virus bound to the PB2 subunit NLS peptide
Keywords keywords	VIRAL PROTEIN, ENDONUCLEASE; VIRAL PROTEIN
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.

5fml__assembly_1__model_1

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

Download this curve (.dat)

5fml__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

5fml__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	18.30 Å
Rg (electron density)	17.09 Å
Total Rg	18.12 Å
Atom count	1749
Residues	215
Excluded volume	31222 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`5fml__assembly_1__model_1`	dimeric （2）	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 (5)

Entity 1 Entity 1 polymer

Description description	PB2 SUBUNIT OF INFLUENZA B POLYMERASE
Molecular weight formula_weight	3318.8 kDa
Source method src_method	syn
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	1918

KRYSALSNDISQGIKRQRMTVESMGWALS

Entity 2 Entity 2 polymer

Description description	PA SUBUNIT OF INFLUENZA B POLYMERASE
Molecular weight formula_weight	23333.5 kDa
Source method src_method	man
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

MGSMAMDTFITRNFQTTIIQKAKNTMAEFSEDPELQPAMLFNICVHLEVCYVISDMNFLDEEGKSYTALEGQGKEQNLRPQYEVIEGMPRTIAWMVQRSLAQEHGIETPKYLADLFDYKTKRFIEVGITKGLADDYFWKKKEKLGNSMELMIFSYNQDYSLSNESSLDEEGKGRVLSRLTELQAELSLKNLWQVLIGEEDVE

Source Source

Source organism organism	INFLUENZA B VIRUS
NCBI taxonomy ID ncbi_taxonomy_id	11520
Host organism host_organism	ESCHERICHIA COLI

Entity 3 Entity 3 non-polymer

Description description	MAGNESIUM ION
Molecular weight formula_weight	24.3 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 4 Entity 4 non-polymer

Description description	GLYCEROL
Molecular weight formula_weight	92.1 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 5 Entity 5 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	101

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Unit-cell length a length_a	35.380 Å
Unit-cell length b length_b	80.850 Å
Unit-cell length c length_c	37.910 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	97.15 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	2

Space group space_group	P 1 21 1
Space-group number int_tables_number	4
Crystal system crystal_system	—

Resolution resolution	1.700 Å
Low-resolution limit resolution_low	40.420 Å
R factor r_factor	0.2268
R_work r_work	0.2243
R_free r_free	0.2756

Crystal structure of the endonuclease from the PA subunit of influenza B virus bound to the PB2 subunit NLS peptide

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

PB2 SUBUNIT OF INFLUENZA B POLYMERASE

State in the Current Structure

Other States of the Same Protein in the Database

PA SUBUNIT OF INFLUENZA B POLYMERASE

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

5fml__assembly_1__model_1

5fml__assembly_1__model_1 | I(q)

5fml__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)

Crystal structure of the endonuclease from the PA subunit of influenza B virus bound to the PB2 subunit NLS peptide

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

PB2 SUBUNIT OF INFLUENZA B POLYMERASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

PA SUBUNIT OF INFLUENZA B POLYMERASE

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

5fml__assembly_1__model_1

5fml__assembly_1__model_1 | I(q)

5fml__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 (5)

Entity 1 Entity 1 polymer

Polymer Polymer

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 non-polymer

Entity 4 Entity 4 non-polymer

Entity 5 Entity 5 water

7. Citations (1)