SAXSdb — 4arn

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

TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA

EPTATRETUS BURGERI

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Monomer	Protein 1 其他Polymer 1	alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 MALONATE ION × 1 water × 1	Consistent with protein count
2	Insufficient information	Monomer	Protein 1	2-acetamido-2-deoxy-beta-D-glucopyranose × 3 MALONATE ION × 1 water × 1	Consistent with protein count
3	Insufficient information	Monomer	Protein 1 其他Polymer 2	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ;alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-3)][alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 water × 1	Consistent with protein count
4	Insufficient information	Monomer	Protein 1 其他Polymer 1	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	TOLL_DROME
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–201； UniProt 28–228 Author chain B； PDBConstruct 1–201； UniProt 28–228 Author chain C； PDBConstruct 1–201； UniProt 28–228 Author chain D； PDBConstruct 1–201； UniProt 28–228

TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA

EPTATRETUS BURGERI

UniProt Q4G1L2

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Monomer	Protein 1 其他Polymer 1	alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 MALONATE ION × 1 water × 1	Consistent with protein count
2	Insufficient information	Monomer	Protein 1	2-acetamido-2-deoxy-beta-D-glucopyranose × 3 MALONATE ION × 1 water × 1	Consistent with protein count
3	Insufficient information	Monomer	Protein 1 其他Polymer 2	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 ;alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-3)][alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ; × 1 water × 1	Consistent with protein count
4	Insufficient information	Monomer	Protein 1 其他Polymer 1	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose × 1 2-acetamido-2-deoxy-beta-D-glucopyranose × 1 water × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q4G1L2_EPTBU
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 202–272； UniProt 131–201 Author chain B； PDBConstruct 202–272； UniProt 131–201 Author chain C； PDBConstruct 202–272； UniProt 131–201 Author chain D； PDBConstruct 202–272； UniProt 131–201

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	4arn
Deposition date deposition_date	2012-04-25
Structure title title	Crystal structure of the N-terminal domain of Drosophila Toll receptor
Keywords keywords	IMMUNE SYSTEM, CYTOKINE RECEPTOR, EMBRYONIC DEVELOPMENT, INNATE IMMUNITY, LEUCINE-RICH REPEAT, LRR HYBRID TECHNOLOGY; IMMUNE SYSTEM
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.

4arn__assembly_1__model_1

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

Download this curve (.dat)

4arn__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4arn__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	23.36 Å
Rg (electron density)	22.38 Å
Total Rg	23.23 Å
Atom count	2250
Residues	277
Excluded volume	40032 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4arn__assembly_1__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`4arn__assembly_2__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
3	1	`4arn__assembly_3__model_1`	monomeric （1）	Success	4.1.3-1-20251215 (887e7ef)	View Download
4	1	`4arn__assembly_4__model_1`	monomeric （1）	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 (7)

Entity 1 Entity 1 polymer

Description description	TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA
Molecular weight formula_weight	31957.8 kDa
Source method src_method	man
Copy count entity_count	4

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D
Atom count atom_count	9283

SFGRDACSEMSIDGLCQCAPIMSEYEIICPANAENPTFRLTIQPKDYVQIMCNLTDTTDYQQLPKKLRIGEVDRVQMRRCMLPGHTPIASILDYLGIVSPTTLIFESDNLGMNITRQHLDRLHGLKRFRFTTRRLTHIPANLLTDMRNLSHLELRANIEEMPSHLFDDLENLESIEFGSNKLRQMPRGIFGKMPKLKQLNLASNQLKSVPDGIFDRLTSLQKIWLHTNPWDCSCPRIDYLSRWLNKNSQKEQGSAKCSGSGKPVRSIICPTTGENLYFQ

Source Source

Source organism organism	EPTATRETUS BURGERI
Common name common_name	INSHORE HAGFISH
NCBI taxonomy ID ncbi_taxonomy_id	7764
Host organism host_organism	SPODOPTERA FRUGIPERDA

Entity 2 Entity 2 branched

Description description	alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	367.3 kDa
Source method src_method	man
Copy count entity_count	1

Entity 3 Entity 3 branched

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	424.4 kDa
Source method src_method	man
Copy count entity_count	2

Entity 4 Entity 4 branched

Description description	;alpha-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-3)][alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose ;
Molecular weight formula_weight	1203.1 kDa
Source method src_method	man
Copy count entity_count	1

Entity 5 Entity 5 non-polymer

Description description	2-acetamido-2-deoxy-beta-D-glucopyranose
Molecular weight formula_weight	221.2 kDa
Source method src_method	man
Copy count entity_count	5

Entity 6 Entity 6 non-polymer

Description description	MALONATE ION
Molecular weight formula_weight	102.0 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 7 Entity 7 water

Description description	water
Molecular weight formula_weight	18.0 kDa
Source method src_method	nat
Copy count entity_count	323

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6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

Domain ID domain_id	4arnA00
Class class	3 — Alpha Beta
Architecture architecture	80 — Alpha-Beta Horseshoe
Topology topology	10 — Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)
Homologous superfamily homologous superfamily	10 — Ribonuclease Inhibitor

Domain ID domain_id	4arnB00
Class class	3 — Alpha Beta
Architecture architecture	80 — Alpha-Beta Horseshoe
Topology topology	10 — Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)
Homologous superfamily homologous superfamily	10 — Ribonuclease Inhibitor

Domain ID domain_id	4arnC00
Class class	3 — Alpha Beta
Architecture architecture	80 — Alpha-Beta Horseshoe
Topology topology	10 — Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)
Homologous superfamily homologous superfamily	10 — Ribonuclease Inhibitor

Domain ID domain_id	4arnD00
Class class	3 — Alpha Beta
Architecture architecture	80 — Alpha-Beta Horseshoe
Topology topology	10 — Leucine-rich repeat, LRR (right-handed beta-alpha superhelix)
Homologous superfamily homologous superfamily	10 — Ribonuclease Inhibitor

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Unit-cell length a length_a	88.787 Å
Unit-cell length b length_b	93.276 Å
Unit-cell length c length_c	225.342 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	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	2.410 Å
Low-resolution limit resolution_low	29.950 Å
R factor r_factor	0.2017
R_work r_work	0.2009
R_free r_free	0.2158

Crystal structure of the N-terminal domain of Drosophila Toll receptor

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

TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA

State in the Current Structure

Other States of the Same Protein in the Database

TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA

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

4arn__assembly_1__model_1

4arn__assembly_1__model_1 | I(q)

4arn__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 (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 branched

Entity 3 Entity 3 branched

Entity 4 Entity 4 branched

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (2)

Crystal structure of the N-terminal domain of Drosophila Toll receptor

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

TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

TOLL RECEPTOR, VARIABLE LYMPHOCYTE RECEPTOR B.61 CHIMERA

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

4arn__assembly_1__model_1

4arn__assembly_1__model_1 | I(q)

4arn__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 (7)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 branched

Entity 3 Entity 3 branched

Entity 4 Entity 4 branched

Entity 5 Entity 5 non-polymer

Entity 6 Entity 6 non-polymer

Entity 7 Entity 7 water

6. Fold Classification (SCOP + CATH) 4 domains

CATH v4.4 (4 domains)

7. Citations (2)