SAXSdb — 4v4k

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

PORTAL PROTEIN

ENTEROBACTERIA PHAGE P22

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 24	PACKAGED DNA STABILIZATION PROTEIN GP4 × 12 （P26746） water × 12	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 24	PACKAGED DNA STABILIZATION PROTEIN GP4 × 12 （P26746） water × 12	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	PORTL_BPP22
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–602； UniProt 1–602 Author chain B； PDBConstruct 1–602； UniProt 1–602 Author chain C； PDBConstruct 1–602； UniProt 1–602 Author chain D； PDBConstruct 1–602； UniProt 1–602 Author chain E； PDBConstruct 1–602； UniProt 1–602 Author chain F； PDBConstruct 1–602； UniProt 1–602 Author chain G； PDBConstruct 1–602； UniProt 1–602 Author chain H； PDBConstruct 1–602； UniProt 1–602 Author chain I； PDBConstruct 1–602； UniProt 1–602 Author chain J； PDBConstruct 1–602； UniProt 1–602 Author chain K； PDBConstruct 1–602； UniProt 1–602 Author chain L； PDBConstruct 1–602； UniProt 1–602 Author chain M； PDBConstruct 1–602； UniProt 1–602 Author chain N； PDBConstruct 1–602； UniProt 1–602 Author chain O； PDBConstruct 1–602； UniProt 1–602 Author chain P； PDBConstruct 1–602； UniProt 1–602 Author chain Q； PDBConstruct 1–602； UniProt 1–602 Author chain R； PDBConstruct 1–602； UniProt 1–602 Author chain S； PDBConstruct 1–602； UniProt 1–602 Author chain T； PDBConstruct 1–602； UniProt 1–602 Author chain U； PDBConstruct 1–602； UniProt 1–602 Author chain V； PDBConstruct 1–602； UniProt 1–602 Author chain W； PDBConstruct 1–602； UniProt 1–602 Author chain X； PDBConstruct 1–602； UniProt 1–602

PACKAGED DNA STABILIZATION PROTEIN GP4

ENTEROBACTERIA PHAGE P22

UniProt P26746

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 24	PORTAL PROTEIN × 12 （P26744） water × 12	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 24	PORTAL PROTEIN × 12 （P26744） water × 12	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	VG04_BPP22
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain Y； PDBConstruct 1–166； UniProt 1–166 Author chain Z； PDBConstruct 1–166； UniProt 1–166 Author chain a； PDBConstruct 1–166； UniProt 1–166 Author chain b； PDBConstruct 1–166； UniProt 1–166 Author chain c； PDBConstruct 1–166； UniProt 1–166 Author chain d； PDBConstruct 1–166； UniProt 1–166 Author chain e； PDBConstruct 1–166； UniProt 1–166 Author chain f； PDBConstruct 1–166； UniProt 1–166 Author chain g； PDBConstruct 1–166； UniProt 1–166 Author chain h； PDBConstruct 1–166； UniProt 1–166 Author chain i； PDBConstruct 1–166； UniProt 1–166 Author chain j； PDBConstruct 1–166； UniProt 1–166 Author chain k； PDBConstruct 1–166； UniProt 1–166 Author chain l； PDBConstruct 1–166； UniProt 1–166 Author chain m； PDBConstruct 1–166； UniProt 1–166 Author chain n； PDBConstruct 1–166； UniProt 1–166 Author chain o； PDBConstruct 1–166； UniProt 1–166 Author chain p； PDBConstruct 1–166； UniProt 1–166 Author chain q； PDBConstruct 1–166； UniProt 1–166 Author chain r； PDBConstruct 1–166； UniProt 1–166 Author chain s； PDBConstruct 1–166； UniProt 1–166 Author chain t； PDBConstruct 1–166； UniProt 1–166 Author chain u； PDBConstruct 1–166； UniProt 1–166 Author chain v； PDBConstruct 1–166； UniProt 1–166

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	4v4k
Deposition date deposition_date	2010-04-19
Structure title title	Bacteriophage P22 Portal Protein bound to middle Tail Factor GP4. This file contain the second biological assembly
Keywords keywords	PORTAL PROTEIN, DNA EJECTION, MOLECULAR MOTOR, DNA PACKAGING, PODOVIRIDAE, VIRUS ASSEMBLY, LATE PROTEIN, VIRAL PROTEIN; 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.

4v4k__assembly_1__model_1

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

Download this curve (.dat)

4v4k__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4v4k__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	66.20 Å
Rg (electron density)	65.25 Å
Total Rg	65.18 Å
Atom count	67392
Residues	8364
Excluded volume	1187800 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4v4k__assembly_1__model_1`	24-meric （24）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4v4k__assembly_2__model_1`	24-meric （24）	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 (3)

Entity 1 Entity 1 polymer

Description description	PORTAL PROTEIN
Molecular weight formula_weight	70015.4 kDa
Source method src_method	man
Copy count entity_count	24

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	M,N,O,P,Q,R,S,T,U,V,W,X,A,B,C,D,E,F,G,H,I,J,K,L
Atom count atom_count	135120

MADNENRLESILSRFDADWTASDEARREAKNDLFFSRVSQWDDWLSQYTTLQYRGQFDVVRPVVRKLVSEMRQNPIDVLYRPKDGARPDAADVLMGMYRTDMRHNTAKIAVNIAVREQIEAGVGAWRLVTDYEDQSPTSNNQVIRREPIHSACSHVIWDSNSKLMDKSDARHCTVIHSMSQNGWEDFAEKYDLDADDIPSFQNPNDWVFPWLTQDTIQIAEFYEVVEKKETAFIYQDPVTGEPVSYFKRDIKDVIDDLADSGFIKIAERQIKRRRVYKSIITCTAVLKDKQLIAGEHIPIVPVFGEWGFVEDKEVYEGVVRLTKDGQRLRNMIMSFNADIVARTPKKKPFFWPEQIAGFEHMYDGNDDYPYYLLNRTDENSGDLPTQPLAYYENPEVPQANAYMLEAATSAVKEVATLGVDTEAVNGGQVAFDTVNQLNMRADLETYVFQDNLATAMRRDGEIYQSIVNDIYDVPRNVTITLEDGSEKDVQLMAEVVDLATGEKQVLNDIRGRYECYTDVGPSFQSMKQQNRAEILELLGKTPQGTPEYQLLLLQYFTLLDGKGVEMMRDYANKQLIQMGVKKPETPEEQQWLVEAQQAKQG

Source Source

Source organism organism	ENTEROBACTERIA PHAGE P22
Common name common_name	BACTERIOPHAGE P22
NCBI taxonomy ID ncbi_taxonomy_id	10754
Host organism host_organism	Escherichia coli

Entity 2 Entity 2 polymer

Description description	PACKAGED DNA STABILIZATION PROTEIN GP4
Molecular weight formula_weight	18071.0 kDa
Mutation mutation	YES
Source method src_method	man
Copy count entity_count	24

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	k,l,m,n,o,p,q,r,s,t,u,v,Y,Z,a,b,c,d,e,f,g,h,i,j

MQIKTKGDLVRAALRKLGVASDATLTDVEPQSMQDAVDDLEAMMAEWYQDGKGIITGYVFSDDENPPAEGDDHGLRSSAVSAVFHNLACRIAPDYALEATAKIIATAKYGKELLYKQTAISRAKRAPYPSRMPTGSGNSFPNLNEWHYFPGEQNADSTTPHDEGNG

Source Source

Source organism organism	ENTEROBACTERIA PHAGE P22
Common name common_name	BACTERIOPHAGE P22
NCBI taxonomy ID ncbi_taxonomy_id	10754
Host organism host_organism	Escherichia coli

Entity 3 Entity 3 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	516

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Unit-cell length a length_a	170.172 Å
Unit-cell length b length_b	253.284 Å
Unit-cell length c length_c	282.730 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.68 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	48

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

Resolution resolution	3.251 Å
Low-resolution limit resolution_low	19.991 Å
R factor r_factor	0.2224
R_work r_work	0.2223
R_free r_free	0.2365

Bacteriophage P22 Portal Protein bound to middle Tail Factor GP4. This file contain the second biological assembly

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

PORTAL PROTEIN

State in the Current Structure

Other States of the Same Protein in the Database

PACKAGED DNA STABILIZATION PROTEIN GP4

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

4v4k__assembly_1__model_1

4v4k__assembly_1__model_1 | I(q)

4v4k__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

7. Citations (1)

Bacteriophage P22 Portal Protein bound to middle Tail Factor GP4. This file contain the second biological assembly

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

PORTAL 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

PACKAGED DNA STABILIZATION PROTEIN GP4

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

4v4k__assembly_1__model_1

4v4k__assembly_1__model_1 | I(q)

4v4k__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 (3)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 polymer

Polymer Polymer

Source Source

Entity 3 Entity 3 water

7. Citations (1)