SAXSdb — 4y7j

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

Large conductance mechanosensitive channel protein,Riboflavin synthase

Methanocaldococcus jannaschii DSM 2661

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 5	nonyl beta-D-glucopyranoside × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	RISC_METJA
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 122–277； UniProt 1–156 Author chain B； PDBConstruct 122–277； UniProt 1–156 Author chain C； PDBConstruct 122–277； UniProt 1–156 Author chain D； PDBConstruct 122–277； UniProt 1–156 Author chain E； PDBConstruct 122–277； UniProt 1–156

Large conductance mechanosensitive channel protein,Riboflavin synthase

Methanocaldococcus jannaschii DSM 2661

UniProt Q8TNK0

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 5	nonyl beta-D-glucopyranoside × 1	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	Q8TNK0_METAC
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 21–121； UniProt 1–101 Author chain B； PDBConstruct 21–121； UniProt 1–101 Author chain C； PDBConstruct 21–121； UniProt 1–101 Author chain D； PDBConstruct 21–121； UniProt 1–101 Author chain E； PDBConstruct 21–121； UniProt 1–101

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	4y7j
Deposition date deposition_date	2015-02-15
Structure title title	Structure of an archaeal mechanosensitive channel in expanded state
Keywords keywords	mechanosensitive channel, mechanosensation, membrane protein, transport protein; MEMBRANE PROTEIN,TRANSPORT 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.

4y7j__assembly_1__model_1

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

Download this curve (.dat)

4y7j__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

4y7j__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	34.10 Å
Rg (electron density)	33.42 Å
Total Rg	33.93 Å
Atom count	8892
Residues	1170
Excluded volume	163120 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`4y7j__assembly_1__model_1`	pentameric （5）	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 (2)

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Unit-cell length a length_a	147.360 Å
Unit-cell length b length_b	149.250 Å
Unit-cell length c length_c	99.170 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	20

Space group space_group	P 21 21 2
Space-group number int_tables_number	18
Crystal system crystal_system	—

Resolution resolution	4.100 Å
Low-resolution limit resolution_low	40.000 Å
R factor r_factor	0.3234
R_work r_work	0.3207
R_free r_free	0.3758

Description description	Large conductance mechanosensitive channel protein,Riboflavin synthase
Molecular weight formula_weight	30869.3 kDa
Source method src_method	man
Copy count entity_count	5

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,B,C,D,E
Atom count atom_count	8893

Structure of an archaeal mechanosensitive channel in expanded state

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

Large conductance mechanosensitive channel protein,Riboflavin synthase

State in the Current Structure

Other States of the Same Protein in the Database

Large conductance mechanosensitive channel protein,Riboflavin synthase

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

4y7j__assembly_1__model_1

4y7j__assembly_1__model_1 | I(q)

4y7j__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

7. Citations (1)

Source organism organism	Methanocaldococcus jannaschii DSM 2661
NCBI taxonomy ID ncbi_taxonomy_id	243232
Host organism host_organism	Escherichia coli

Description description	nonyl beta-D-glucopyranoside
Molecular weight formula_weight	306.4 kDa
Source method src_method	man
Copy count entity_count	1

Structure of an archaeal mechanosensitive channel in expanded state

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

Large conductance mechanosensitive channel protein,Riboflavin synthase

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Large conductance mechanosensitive channel protein,Riboflavin synthase

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

4y7j__assembly_1__model_1

4y7j__assembly_1__model_1 | I(q)

4y7j__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 (2)

Entity 1 Entity 1 polymer

Polymer Polymer

Source Source

Entity 2 Entity 2 non-polymer

7. Citations (1)