SAXSdb — 9h2s

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

Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel

Escherichia coli (strain K12)

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 7	DODECANE × 21	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	YNAI_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–136； UniProt 3–138 Author chain B； PDBConstruct 1–136； UniProt 3–138 Author chain C； PDBConstruct 1–136； UniProt 3–138 Author chain D； PDBConstruct 1–136； UniProt 3–138 Author chain E； PDBConstruct 1–136； UniProt 3–138 Author chain F； PDBConstruct 1–136； UniProt 3–138 Author chain G； PDBConstruct 1–136； UniProt 3–138

Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel

Escherichia coli (strain K12)

UniProt P0C0S1

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Insufficient information	Homooligomer	Protein 7	DODECANE × 21	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	MSCS_ECOLI
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 137–327； UniProt 90–280 Author chain B； PDBConstruct 137–327； UniProt 90–280 Author chain C； PDBConstruct 137–327； UniProt 90–280 Author chain D； PDBConstruct 137–327； UniProt 90–280 Author chain E； PDBConstruct 137–327； UniProt 90–280 Author chain F； PDBConstruct 137–327； UniProt 90–280 Author chain G； PDBConstruct 137–327； UniProt 90–280

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	9h2s
Deposition date deposition_date	2024-10-15
Last revision last_revision	2025-09-24
Structure title title	a YnaI-MscS chimera in a closed conformation purified in DDM with additional lipids showing ligand-filled pore and pockets
Keywords keywords	chimera; mechanosensitive ion channel; MscS-like, MEMBRANE PROTEIN; MEMBRANE PROTEIN
Experimental Method method	ELECTRON MICROSCOPY

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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.

9h2s__assembly_1__model_1

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

Download this curve (.dat)

9h2s__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

9h2s__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	46.78 Å
Rg (electron density)	46.00 Å
Total Rg	46.06 Å
Atom count	18781
Residues	2289
Excluded volume	334610 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`9h2s__assembly_1__model_1`	heptameric （7）	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	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	—

Resolution resolution	2.70 Å
Resolution测定Method resolution_method	—
颗粒数 num_particles	311990

Description description	Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel
Molecular weight formula_weight	36448.8 kDa
Source method src_method	man
Copy count entity_count	7

Polymer type type	polypeptide(L)
Chain IDs strand_id	A,D,B,C,E,F,G
Atom count atom_count	18781

a YnaI-MscS chimera in a closed conformation purified in DDM with additional lipids showing ligand-filled pore and pockets

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

Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel

State in the Current Structure

Other States of the Same Protein in the Database

Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel

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

9h2s__assembly_1__model_1

9h2s__assembly_1__model_1 | I(q)

9h2s__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

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	Escherichia coli (strain K12)
NCBI taxonomy ID ncbi_taxonomy_id	83333
Host organism host_organism	Escherichia coli

Description description	DODECANE
Molecular weight formula_weight	170.3 kDa
Source method src_method	syn
Copy count entity_count	21

a YnaI-MscS chimera in a closed conformation purified in DDM with additional lipids showing ligand-filled pore and pockets

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

Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

Low conductance mechanosensitive channel YnaI,Small-conductance mechanosensitive channel

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

9h2s__assembly_1__model_1

9h2s__assembly_1__model_1 | I(q)

9h2s__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment

Unit cell Unit Cell

Symmetry Symmetry

冷冻电镜 EM 3D

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)