SAXSdb — 7t4f

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

Tail tube protein

Escherichia virus Lambda

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 homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric（4） Consistent with protein copy count	Chain A； UniProt 2–246 Chain B； UniProt 2–246 Chain C； UniProt 2–246 Chain D； UniProt 2–246	Not recorded	No other associated polymer	ELECTRON MICROSCOPY cryo-EM buffer：pH 7.5 cryo-EM vitrification conditions：Cryogen ETHANE	Resolution 2.70 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 7T4F	Assembly / Oligomeric State	Construct	Mutations and Modifications	Ligands, Ions and Non-polymers	Method and Experimental Conditions	Structure Quality
2K4Q The Solution Structure of gpV, the Major Tail Protein from Bacteriophage Lambda Deposited 2008-06-16	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 1–153（153 aa）	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.8；293 K；Ionic strength (raw mmCIF value) 200；Pressure ambient NMR sample composition 50 mM sodium phosphate, 0.6 mM DSS, 200 mM sodium chloride, 8-10 % D2O, 0.1% % sodium azide, 1 mM [U-100% 13C; U-100% 15N] gpV protein, 90% H2O/10% D2O \| 90% H2O/10% D2O NMR sample composition 1 mM [U-100% 13C; U-100% 15N] gpV protein, 90-99 % D2O, 0.6 mM DSS, 50 mM sodium phosphate, 200 mM sodium chloride, 0.1 % sodium azide, 90% D2O, 10% H2O \| 90% D2O, 10% H2O	Resolution not provided
2L04 The Solution Structure of the C-terminal Ig-like Domain of the Bacteriophage Lambda Tail Tube Protein Deposited 2010-06-30	Different construct Different mutation/modification Different oligomeric state Different experimental method Different experimental conditions Different structure-quality metrics	Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric	Chain A 160–246（87 aa） Fragment：C-terminal, UNP residues 160-246	Not recorded	No recorded non-water small molecule	SOLUTION NMR NMR measurement conditions pH 6.8；298 K；Ionic strength (raw mmCIF value) .2；Pressure ambient NMR sample composition 50 mM sodium phosphate-1, 200 mM sodium chloride-2, 90% H2O/10% D2O \| 90% H2O/10% D2O NMR sample composition 50 mM sodium phosphate-3, 200 mM sodium chloride-4, 100% D2O \| 100% D2O	Resolution not provided
6P3E Mobile loops and electrostatic interactions maintain the flexible lambda tail tube Deposited 2019-05-23	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 18 PDB declaration: octadecameric	Chain A 1–246（246 aa） Chain B 1–246（246 aa） Chain C 1–246（246 aa） Chain D 1–246（246 aa） Chain E 1–246（246 aa） Chain F 1–246（246 aa） Chain G 1–246（246 aa） Chain H 1–246（246 aa） Chain I 1–246（246 aa） Chain J 1–246（246 aa） Chain K 1–246（246 aa） Chain L 1–246（246 aa） Chain M 1–246（246 aa） Chain N 1–246（246 aa） Chain O 1–246（246 aa） Chain P 1–246（246 aa） Chain Q 1–246（246 aa） Chain R 1–246（246 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE-PROPANE	Resolution 5.40 Å
7T2E Structure of bacteriophage lambda tube protein V in C6 Deposited 2021-12-03	Different construct Different mutation/modification Different oligomeric state	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain A 2–157（156 aa） Chain B 2–157（156 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 2.70 Å
8IYD Tail cap of phage lambda tail Deposited 2023-04-04	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 30 PDB declaration: 30-meric	Chain A 1–246（246 aa） Chain B 1–246（246 aa） Chain C 1–246（246 aa） Chain D 1–246（246 aa） Chain E 1–246（246 aa） Chain F 1–246（246 aa） Chain H 1–246（246 aa） Chain I 1–246（246 aa） Chain J 1–246（246 aa） Chain L 1–246（246 aa） Chain M 1–246（246 aa） Chain N 1–246（246 aa） Chain O 1–246（246 aa） Chain P 1–246（246 aa） Chain R 1–246（246 aa） Chain S 1–246（246 aa） Chain T 1–246（246 aa） Chain V 1–246（246 aa） Chain X 1–246（246 aa） Chain Y 1–246（246 aa） Chain a 1–246（246 aa） Chain b 1–246（246 aa） Chain c 1–246（246 aa） Chain v 1–246（246 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen NITROGEN	Resolution 3.10 Å
8IYK Tail tip conformation 1 of phage lambda tail Deposited 2023-04-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 42 PDB declaration: 42-meric	Chain A 1–246（246 aa） Chain B 1–246（246 aa） Chain C 1–246（246 aa） Chain D 1–246（246 aa） Chain G 1–246（246 aa） Chain Q 1–246（246 aa） Chain R 1–246（246 aa） Chain S 1–246（246 aa） Chain T 1–246（246 aa） Chain U 1–246（246 aa） Chain V 1–246（246 aa） Chain W 1–246（246 aa） Chain X 1–246（246 aa） Chain a 1–246（246 aa） Chain b 1–246（246 aa） Chain c 1–246（246 aa） Chain d 1–246（246 aa） Chain i 1–246（246 aa） Chain j 1–246（246 aa） Chain k 1–246（246 aa） Chain l 1–246（246 aa） Chain n 1–246（246 aa） Chain o 1–246（246 aa） Chain v 1–246（246 aa）	Not recorded	SF4 IRON/SULFUR CLUSTER × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen NITROGEN	Resolution 2.95 Å
8IYL Tail tip conformation 2 of phage lambda tail Deposited 2023-04-05	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 42 PDB declaration: 42-meric	Chain A 1–246（246 aa） Chain B 1–246（246 aa） Chain C 1–246（246 aa） Chain O 1–246（246 aa） Chain P 1–246（246 aa） Chain Q 1–246（246 aa） Chain R 1–246（246 aa） Chain S 1–246（246 aa） Chain T 1–246（246 aa） Chain U 1–246（246 aa） Chain V 1–246（246 aa） Chain W 1–246（246 aa） Chain a 1–246（246 aa） Chain b 1–246（246 aa） Chain c 1–246（246 aa） Chain g 1–246（246 aa） Chain h 1–246（246 aa） Chain i 1–246（246 aa） Chain j 1–246（246 aa） Chain k 1–246（246 aa） Chain l 1–246（246 aa） Chain n 1–246（246 aa） Chain o 1–246（246 aa） Chain v 1–246（246 aa）	Not recorded	SF4 IRON/SULFUR CLUSTER × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.5 cryo-EM vitrification conditions Cryogen NITROGEN	Resolution 3.00 Å
8K35 Structure of the bacteriophage lambda tail tip complex Deposited 2023-07-14	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 24 PDB declaration: 24-meric	Chain L 1–246（246 aa） Chain R 1–246（246 aa） Chain T 1–246（246 aa） Chain U 1–246（246 aa） Chain V 1–246（246 aa） Chain W 1–246（246 aa）	Not recorded	SF4 IRON/SULFUR CLUSTER × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.44 Å
8K36 Structure of the bacteriophage lambda tail tube Deposited 2023-07-14	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 12 PDB declaration: dodecameric	Chain A 1–246（246 aa） Chain B 1–246（246 aa） Chain C 1–246（246 aa） Chain D 1–246（246 aa） Chain E 1–246（246 aa） Chain F 1–246（246 aa） Chain G 1–246（246 aa） Chain H 1–246（246 aa） Chain I 1–246（246 aa） Chain J 1–246（246 aa） Chain K 1–246（246 aa） Chain L 1–246（246 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.48 Å
8K37 Structure of the bacteriophage lambda neck Deposited 2023-07-14	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 18 PDB declaration: octadecameric	Chain G 1–246（246 aa） Chain H 1–246（246 aa） Chain I 1–246（246 aa） Chain J 1–246（246 aa） Chain K 1–246（246 aa） Chain L 1–246（246 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7.4 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.50 Å
8KGE Dimeric tail tube protein gpVs of bacteriophage lambda Deposited 2023-08-18	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein homooligomer Homooligomer；Protein × 2 PDB declaration: dimeric	Chain V 1–246（246 aa） Chain v 1–246（246 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7 cryo-EM vitrification conditions Cryogen NITROGEN	Resolution 3.80 Å
8XPM Mature virion portal of phage lambda with DNA Deposited 2024-01-04	Different construct Different mutation/modification Different oligomeric state Different experimental conditions Different structure-quality metrics	Assembly 1 Protein–DNA Heteromer；Protein × 66 PDB declaration: 68-meric	Chain O 1–246（246 aa） Chain O1 1–246（246 aa） Chain O2 1–246（246 aa） Chain P 1–246（246 aa） Chain P1 1–246（246 aa） Chain P2 1–246（246 aa） Chain Q 1–246（246 aa） Chain Q1 1–246（246 aa） Chain Q2 1–246（246 aa） Chain R 1–246（246 aa） Chain R1 1–246（246 aa） Chain R2 1–246（246 aa） Chain V 1–246（246 aa） Chain V1 1–246（246 aa） Chain V2 1–246（246 aa） Chain o 1–246（246 aa） Chain o1 1–246（246 aa） Chain o2 1–246（246 aa） Chain p 1–246（246 aa） Chain p1 1–246（246 aa） Chain p2 1–246（246 aa） Chain q 1–246（246 aa） Chain q1 1–246（246 aa） Chain q2 1–246（246 aa） Chain r 1–246（246 aa） Chain r1 1–246（246 aa） Chain r2 1–246（246 aa） Chain v 1–246（246 aa） Chain v1 1–246（246 aa） Chain v2 1–246（246 aa）	Not recorded	No recorded non-water small molecule	ELECTRON MICROSCOPY cryo-EM buffer pH 7 cryo-EM vitrification conditions Cryogen NITROGEN	Resolution 3.90 Å
9E7M In situ cryoEM structure of bacteriophage Ur-lambda tail tip complex Deposited 2024-11-03	Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental conditions Different structure-quality metrics	Assembly 1 Protein heterocomplex Heteromer；Protein × 36 PDB declaration: 36-meric	Chain Va 3–157（155 aa） Chain Vb 3–157（155 aa） Chain Vc 3–157（155 aa） Chain Vd 3–157（155 aa） Chain Ve 3–157（155 aa） Chain Vf 3–157（155 aa）	Not recorded	SF4 IRON/SULFUR CLUSTER × 3	ELECTRON MICROSCOPY cryo-EM buffer pH 7.6 cryo-EM vitrification conditions Cryogen ETHANE	Resolution 3.37 Å

13 other PDB entries and 13 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence

UniProt name	TUBE_LAMBD
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–245； UniProt 2–246 Author chain B； PDBConstruct 1–245； UniProt 2–246 Author chain C； PDBConstruct 1–245； UniProt 2–246 Author chain D； PDBConstruct 1–245； UniProt 2–246

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	7t4f
Deposition date deposition_date	2021-12-09
Structure title title	Structure of bacteriophage lambda tube protein V in C3
Keywords keywords	Virus, Phage, Lambda, Siphoviridae, Tail, Tube; VIRUS
Experimental Method method	ELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier	36.40 Å
Radius of gyration Rg (electron density) rg_electron	35.86 Å
Forward intensity I(0) i0	169201000.00
Molecular weight molecular_weight	102630.0 kDa
Excluded volume excluded_volume	127840 Å³
Envelope volume envelope_volume	188120 Å³
Hydration-shell volume shell_volume	44096 Å³
Envelope diameter envelope_diameter	132.7 Å
Shell Rg shell_rg	41.76 Å
Envelope Rg envelope_rg	35.66 Å
Shape Rg shape_rg	35.86 Å
Total Rg total_rg	36.31 Å
Total atoms total_atoms	7224
Residues n_residues	980
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

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

Maximum dimension Dmax dmax	123.4 Å
Rg (real space) rg_real	36.34 Å
Rg uncertainty (real space) rg_real_error	1.04 Å
I(0) (real space) i0_real	1.6920e+08
I(0) uncertainty (real space) i0_real_error	2.8420e+06
Rg (reciprocal space) rg_reciprocal	36.38 Å
I(0) (reciprocal space) i0_reciprocal	169200000.0000
Solution quality estimate total_estimate	0.8899
Solution quality rating solution_quality	GOOD a GOOD solution
P(r) peaks n_peaks	1
Primary peak position r_peak_primary	45.9 Å
Skewness Skewness skewness	0.247
Kurtosis Kurtosis kurtosis	-0.360
Angular range angular_range	— – 0.2150 Å⁻¹
Current regularization parameter α current_alpha	0.0001
Highest regularization parameter α highest_alpha	20420000.0000
Real-space data points n_real_points	44
GNOM version gnom_version	4.1.3
Quality Criteria quality_criteria	AN1: 0.000; Oscil: 0.869; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.980; Smooth: 0.978

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5. Crystallography and Experiment 5. Crystallography & Experiment

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6. Entities and Polymers Entities & Polymers (1)

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7. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

Domain ID domain_id	7t4fA01
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	7t4fA02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1080 —

Domain ID domain_id	7t4fB01
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	7t4fB02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1080 —

Domain ID domain_id	7t4fC01
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	7t4fC02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1080 —

Domain ID domain_id	7t4fD01
Class class	4 — Few Secondary Structures
Architecture architecture	10 — Irregular
Topology topology	410 — Factor Xa Inhibitor
Homologous superfamily homologous superfamily	40 —

Domain ID domain_id	7t4fD02
Class class	2 — Mainly Beta
Architecture architecture	60 — Sandwich
Topology topology	40 — Immunoglobulin-like
Homologous superfamily homologous superfamily	1080 —

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8. Citations (1)

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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	triclinic

Resolution resolution	2.70 Å
Resolution测定方法 resolution_method	—
颗粒数 num_particles	653608

Description description	Tail tube protein
Molecular weight formula_weight	25700.6 kDa
Source method src_method	man
Copy count entity_count	4

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	7224

Structure of bacteriophage lambda tube protein V in C3

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

Tail tube protein

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 (1)

Entity 1 Entity 1 polymer

Polymer Polymer

来源 Source

7. Fold Classification (SCOP + CATH) 8 domains

CATH v4.4 (8 domains)

8. Citations (1)

9. Files and Curves (10)

Files (7)

Curves (3)

来源生物 organism	Escherichia virus Lambda
NCBI Class编号 ncbi_taxonomy_id	10710
宿主生物 host_organism	Escherichia coli

fit	/app/data/saxs_computation/t4/7t4f/7t4f.fit
pddf	/app/data/pr_computation/t4/7t4f/7t4f.pr.out
profile	/app/data/saxs_computation/t4/7t4f/7t4f.dat