9SDG | pdb_00009sdg

mechanosensitive channel MscS from Francisella tularensis in DDM, asymmetric processing

PDB DOI: https://doi.org/10.2210/pdb9SDG/pdb
EM Map EMD-54785: EMDB EMDataResource

Classification: MEMBRANE PROTEIN
Organism(s): Francisella tularensis
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2025-08-13 Released: 2026-08-26
Deposition Author(s): Rasmussen, A., Hemmelmann, N., Hove, T.T., Flegler, V.J., Rasmussen, T., Bottcher, B.
Funding Organization(s): German Research Foundation (DFG)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.80 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

This is version 1.0 of the entry. See complete history.

Literature

An asymmetric gate in the homoheptameric mechanosensitive channel MscS from Francisella tularensis

Rasmussen, A., Hemmelmann, N., Bahner, J., Hove, T.T., Flegler, V.J., Kraft, C., Hedrich, R., Rasmussen, T., Bottcher, B.

To be published.

Macromolecule Content

Total Structure Weight: 144.63 kDa
Atom Count: 9,167
Modeled Residue Count: 1,094
Deposited Residue Count: 1,197
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Small-conductance mechanosensitive channel	A, B, C, D, E A, B, C, D, E, F, G	171	Francisella tularensis	Mutation(s): 0 Gene Names: FWI86_02060, FWJ04_01320
UniProt
Find proteins for A0A0B3VCY4 (Francisella tularensis subsp. holarctica) Explore A0A0B3VCY4 Go to UniProtKB: A0A0B3VCY4
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	A0A0B3VCY4
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PEE (Subject of Investigation/LOI) Query on PEE Download:Ideal Coordinates CCD File SDF format, chain BA [auth C] SDF format, chain GA [auth C] SDF format, chain H [auth A] SDF format, chain NB [auth G] SDF format, chain SA [auth E] SDF format, chain M [auth A] SDF format, chain BB [auth F] MOL2 format, chain BA [auth C] MOL2 format, chain GA [auth C] MOL2 format, chain H [auth A] MOL2 format, chain NB [auth G] MOL2 format, chain SA [auth E] MOL2 format, chain M [auth A] MOL2 format, chain BB [auth F] mmCIF format, chain BA [auth C] mmCIF format, chain GA [auth C] mmCIF format, chain H [auth A] mmCIF format, chain NB [auth G] mmCIF format, chain SA [auth E] mmCIF format, chain M [auth A] mmCIF format, chain BB [auth F]	BA [auth C] BB [auth F] GA [auth C] H [auth A] M [auth A] BA [auth C], BB [auth F], GA [auth C], H [auth A], M [auth A], NB [auth G], SA [auth E]	1,2-dioleoyl-sn-glycero-3-phosphoethanolamine C₄₁ H₇₈ N O₈ P MWRBNPKJOOWZPW-NYVOMTAGSA-N		Interactions Focus chain BA [auth C] Focus chain BB [auth F] Focus chain GA [auth C] Focus chain H [auth A] Focus chain M [auth A] Focus chain NB [auth G] Focus chain SA [auth E] Interactions & Density Focus chain BA [auth C] Focus chain BB [auth F] Focus chain GA [auth C] Focus chain H [auth A] Focus chain M [auth A] Focus chain NB [auth G] Focus chain SA [auth E]
C14 (Subject of Investigation/LOI) Query on C14 Download:Ideal Coordinates CCD File SDF format, chain DA [auth C] SDF format, chain FB [auth F] SDF format, chain HA [auth C] SDF format, chain J [auth A] SDF format, chain KB [auth G] SDF format, chain L [auth A] SDF format, chain LA [auth D] SDF format, chain NA [auth D] SDF format, chain U [auth B] SDF format, chain UA [auth E] SDF format, chain W [auth B] SDF format, chain WA [auth E] SDF format, chain QB [auth G] SDF format, chain PB [auth G] SDF format, chain O [auth A] SDF format, chain FA [auth C] SDF format, chain DB [auth F] MOL2 format, chain DA [auth C] MOL2 format, chain FB [auth F] MOL2 format, chain HA [auth C] MOL2 format, chain J [auth A] MOL2 format, chain KB [auth G] MOL2 format, chain L [auth A] MOL2 format, chain LA [auth D] MOL2 format, chain NA [auth D] MOL2 format, chain U [auth B] MOL2 format, chain UA [auth E] MOL2 format, chain W [auth B] MOL2 format, chain WA [auth E] MOL2 format, chain QB [auth G] MOL2 format, chain PB [auth G] MOL2 format, chain O [auth A] MOL2 format, chain FA [auth C] MOL2 format, chain DB [auth F] mmCIF format, chain DA [auth C] mmCIF format, chain FB [auth F] mmCIF format, chain HA [auth C] mmCIF format, chain J [auth A] mmCIF format, chain KB [auth G] mmCIF format, chain L [auth A] mmCIF format, chain LA [auth D] mmCIF format, chain NA [auth D] mmCIF format, chain U [auth B] mmCIF format, chain UA [auth E] mmCIF format, chain W [auth B] mmCIF format, chain WA [auth E] mmCIF format, chain QB [auth G] mmCIF format, chain PB [auth G] mmCIF format, chain O [auth A] mmCIF format, chain FA [auth C] mmCIF format, chain DB [auth F]	DA [auth C] DB [auth F] FA [auth C] FB [auth F] HA [auth C] DA [auth C], DB [auth F], FA [auth C], FB [auth F], HA [auth C], J [auth A], KB [auth G], L [auth A], LA [auth D], NA [auth D], O [auth A], PB [auth G], QB [auth G], U [auth B], UA [auth E], W [auth B], WA [auth E]	TETRADECANE C₁₄ H₃₀ BGHCVCJVXZWKCC-UHFFFAOYSA-N		Interactions Focus chain DA [auth C] Focus chain DB [auth F] Focus chain FA [auth C] Focus chain FB [auth F] Focus chain HA [auth C] Focus chain J [auth A] Focus chain KB [auth G] Focus chain L [auth A] Focus chain LA [auth D] Focus chain NA [auth D] Focus chain O [auth A] Focus chain PB [auth G] Focus chain QB [auth G] Focus chain U [auth B] Focus chain UA [auth E] Focus chain W [auth B] Focus chain WA [auth E] Interactions & Density Focus chain DA [auth C] Focus chain DB [auth F] Focus chain FA [auth C] Focus chain FB [auth F] Focus chain HA [auth C] Focus chain J [auth A] Focus chain KB [auth G] Focus chain L [auth A] Focus chain LA [auth D] Focus chain NA [auth D] Focus chain O [auth A] Focus chain PB [auth G] Focus chain QB [auth G] Focus chain U [auth B] Focus chain UA [auth E] Focus chain W [auth B] Focus chain WA [auth E]
D12 (Subject of Investigation/LOI) Query on D12 Download:Ideal Coordinates CCD File SDF format, chain AB [auth F] SDF format, chain Q [auth A] SDF format, chain X [auth B] SDF format, chain XA [auth E] SDF format, chain ZA [auth E] SDF format, chain S [auth A] SDF format, chain RA [auth D] SDF format, chain OA [auth D] SDF format, chain N [auth A] SDF format, chain JB [auth G] SDF format, chain JA [auth C] SDF format, chain GB [auth F] SDF format, chain AA [auth B] MOL2 format, chain AB [auth F] MOL2 format, chain Q [auth A] MOL2 format, chain X [auth B] MOL2 format, chain XA [auth E] MOL2 format, chain ZA [auth E] MOL2 format, chain S [auth A] MOL2 format, chain RA [auth D] MOL2 format, chain OA [auth D] MOL2 format, chain N [auth A] MOL2 format, chain JB [auth G] MOL2 format, chain JA [auth C] MOL2 format, chain GB [auth F] MOL2 format, chain AA [auth B] mmCIF format, chain AB [auth F] mmCIF format, chain Q [auth A] mmCIF format, chain X [auth B] mmCIF format, chain XA [auth E] mmCIF format, chain ZA [auth E] mmCIF format, chain S [auth A] mmCIF format, chain RA [auth D] mmCIF format, chain OA [auth D] mmCIF format, chain N [auth A] mmCIF format, chain JB [auth G] mmCIF format, chain JA [auth C] mmCIF format, chain GB [auth F] mmCIF format, chain AA [auth B]	AA [auth B] AB [auth F] GB [auth F] JA [auth C] JB [auth G] AA [auth B], AB [auth F], GB [auth F], JA [auth C], JB [auth G], N [auth A], OA [auth D], Q [auth A], RA [auth D], S [auth A], X [auth B], XA [auth E], ZA [auth E]	DODECANE C₁₂ H₂₆ SNRUBQQJIBEYMU-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain AB [auth F] Focus chain GB [auth F] Focus chain JA [auth C] Focus chain JB [auth G] Focus chain N [auth A] Focus chain OA [auth D] Focus chain Q [auth A] Focus chain RA [auth D] Focus chain S [auth A] Focus chain X [auth B] Focus chain XA [auth E] Focus chain ZA [auth E] Interactions & Density Focus chain AA [auth B] Focus chain AB [auth F] Focus chain GB [auth F] Focus chain JA [auth C] Focus chain JB [auth G] Focus chain N [auth A] Focus chain OA [auth D] Focus chain Q [auth A] Focus chain RA [auth D] Focus chain S [auth A] Focus chain X [auth B] Focus chain XA [auth E] Focus chain ZA [auth E]
D10 (Subject of Investigation/LOI) Query on D10 Download:Ideal Coordinates CCD File SDF format, chain EA [auth C] SDF format, chain IA [auth C] SDF format, chain MA [auth D] SDF format, chain V [auth B] SDF format, chain VA [auth E] SDF format, chain Y [auth B] SDF format, chain YA [auth E] SDF format, chain PA [auth D] SDF format, chain P [auth A] SDF format, chain LB [auth G] SDF format, chain K [auth A] SDF format, chain HB [auth F] SDF format, chain EB [auth F] MOL2 format, chain EA [auth C] MOL2 format, chain IA [auth C] MOL2 format, chain MA [auth D] MOL2 format, chain V [auth B] MOL2 format, chain VA [auth E] MOL2 format, chain Y [auth B] MOL2 format, chain YA [auth E] MOL2 format, chain PA [auth D] MOL2 format, chain P [auth A] MOL2 format, chain LB [auth G] MOL2 format, chain K [auth A] MOL2 format, chain HB [auth F] MOL2 format, chain EB [auth F] mmCIF format, chain EA [auth C] mmCIF format, chain IA [auth C] mmCIF format, chain MA [auth D] mmCIF format, chain V [auth B] mmCIF format, chain VA [auth E] mmCIF format, chain Y [auth B] mmCIF format, chain YA [auth E] mmCIF format, chain PA [auth D] mmCIF format, chain P [auth A] mmCIF format, chain LB [auth G] mmCIF format, chain K [auth A] mmCIF format, chain HB [auth F] mmCIF format, chain EB [auth F]	EA [auth C] EB [auth F] HB [auth F] IA [auth C] K [auth A] EA [auth C], EB [auth F], HB [auth F], IA [auth C], K [auth A], LB [auth G], MA [auth D], P [auth A], PA [auth D], V [auth B], VA [auth E], Y [auth B], YA [auth E]	DECANE C₁₀ H₂₂ DIOQZVSQGTUSAI-UHFFFAOYSA-N		Interactions Focus chain EA [auth C] Focus chain EB [auth F] Focus chain HB [auth F] Focus chain IA [auth C] Focus chain K [auth A] Focus chain LB [auth G] Focus chain MA [auth D] Focus chain P [auth A] Focus chain PA [auth D] Focus chain V [auth B] Focus chain VA [auth E] Focus chain Y [auth B] Focus chain YA [auth E] Interactions & Density Focus chain EA [auth C] Focus chain EB [auth F] Focus chain HB [auth F] Focus chain IA [auth C] Focus chain K [auth A] Focus chain LB [auth G] Focus chain MA [auth D] Focus chain P [auth A] Focus chain PA [auth D] Focus chain V [auth B] Focus chain VA [auth E] Focus chain Y [auth B] Focus chain YA [auth E]
OCT (Subject of Investigation/LOI) Query on OCT Download:Ideal Coordinates CCD File SDF format, chain CA [auth C] SDF format, chain I [auth A] SDF format, chain IB [auth F] SDF format, chain KA [auth D] SDF format, chain MB [auth G] SDF format, chain OB [auth G] SDF format, chain QA [auth D] SDF format, chain R [auth A] SDF format, chain T [auth B] SDF format, chain Z [auth B] SDF format, chain TA [auth E] SDF format, chain CB [auth F] MOL2 format, chain CA [auth C] MOL2 format, chain I [auth A] MOL2 format, chain IB [auth F] MOL2 format, chain KA [auth D] MOL2 format, chain MB [auth G] MOL2 format, chain OB [auth G] MOL2 format, chain QA [auth D] MOL2 format, chain R [auth A] MOL2 format, chain T [auth B] MOL2 format, chain Z [auth B] MOL2 format, chain TA [auth E] MOL2 format, chain CB [auth F] mmCIF format, chain CA [auth C] mmCIF format, chain I [auth A] mmCIF format, chain IB [auth F] mmCIF format, chain KA [auth D] mmCIF format, chain MB [auth G] mmCIF format, chain OB [auth G] mmCIF format, chain QA [auth D] mmCIF format, chain R [auth A] mmCIF format, chain T [auth B] mmCIF format, chain Z [auth B] mmCIF format, chain TA [auth E] mmCIF format, chain CB [auth F]	CA [auth C] CB [auth F] I [auth A] IB [auth F] KA [auth D] CA [auth C], CB [auth F], I [auth A], IB [auth F], KA [auth D], MB [auth G], OB [auth G], QA [auth D], R [auth A], T [auth B], TA [auth E], Z [auth B]	N-OCTANE C₈ H₁₈ TVMXDCGIABBOFY-UHFFFAOYSA-N		Interactions Focus chain CA [auth C] Focus chain CB [auth F] Focus chain I [auth A] Focus chain IB [auth F] Focus chain KA [auth D] Focus chain MB [auth G] Focus chain OB [auth G] Focus chain QA [auth D] Focus chain R [auth A] Focus chain T [auth B] Focus chain TA [auth E] Focus chain Z [auth B] Interactions & Density Focus chain CA [auth C] Focus chain CB [auth F] Focus chain I [auth A] Focus chain IB [auth F] Focus chain KA [auth D] Focus chain MB [auth G] Focus chain OB [auth G] Focus chain QA [auth D] Focus chain R [auth A] Focus chain T [auth B] Focus chain TA [auth E] Focus chain Z [auth B]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.80 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	5.0
MODEL REFINEMENT	PHENIX	1.20.1_4487

Structure Validation

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View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2026-08-26

Deposition Author(s):

Funding Organization	Location	Grant Number
German Research Foundation (DFG)	Germany	538122946
German Research Foundation (DFG)	Germany	359471283
German Research Foundation (DFG)	Germany	525040890
German Research Foundation (DFG)	Germany	456578072