9SEC | pdb_00009sec

mechanosensitive channel MscS from Francisella tularensis in DDM

PDB DOI: https://doi.org/10.2210/pdb9SEC/pdb
EM Map EMD-54806: EMDB EMDataResource

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

Deposited: 2025-08-16 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: 2.40 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

Starting Model: experimental
View more details

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: 145.96 kDa
Atom Count: 9,289
Modeled Residue Count: 1,099
Deposited Residue Count: 1,197
Unique protein chains: 1

Macromolecules

Find similar proteins by:

| 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 FB [auth F] SDF format, chain H [auth A] SDF format, chain R [auth B] SDF format, chain UB [auth G] SDF format, chain VA [auth E] SDF format, chain MA [auth D] MOL2 format, chain BA [auth C] MOL2 format, chain FB [auth F] MOL2 format, chain H [auth A] MOL2 format, chain R [auth B] MOL2 format, chain UB [auth G] MOL2 format, chain VA [auth E] MOL2 format, chain MA [auth D] mmCIF format, chain BA [auth C] mmCIF format, chain FB [auth F] mmCIF format, chain H [auth A] mmCIF format, chain R [auth B] mmCIF format, chain UB [auth G] mmCIF format, chain VA [auth E] mmCIF format, chain MA [auth D]	BA [auth C] FB [auth F] H [auth A] MA [auth D] R [auth B] BA [auth C], FB [auth F], H [auth A], MA [auth D], R [auth B], UB [auth G], VA [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 FB [auth F] Focus chain H [auth A] Focus chain MA [auth D] Focus chain R [auth B] Focus chain UB [auth G] Focus chain VA [auth E] Interactions & Density Focus chain BA [auth C] Focus chain FB [auth F] Focus chain H [auth A] Focus chain MA [auth D] Focus chain R [auth B] Focus chain UB [auth G] Focus chain VA [auth E]
C14 (Subject of Investigation/LOI) Query on C14 Download:Ideal Coordinates CCD File SDF format, chain DA [auth C] SDF format, chain FA [auth C] SDF format, chain HB [auth F] SDF format, chain IB [auth F] SDF format, chain J [auth A] SDF format, chain KB [auth F] SDF format, chain L [auth A] SDF format, chain MB [auth F] SDF format, chain N [auth A] SDF format, chain OA [auth D] SDF format, chain PA [auth D] SDF format, chain QB [auth G] SDF format, chain RA [auth D] SDF format, chain T [auth B] SDF format, chain V [auth B] SDF format, chain WB [auth G] SDF format, chain X [auth B] SDF format, chain XA [auth E] SDF format, chain YB [auth G] SDF format, chain ZA [auth E] SDF format, chain HA [auth C] MOL2 format, chain DA [auth C] MOL2 format, chain FA [auth C] MOL2 format, chain HB [auth F] MOL2 format, chain IB [auth F] MOL2 format, chain J [auth A] MOL2 format, chain KB [auth F] MOL2 format, chain L [auth A] MOL2 format, chain MB [auth F] MOL2 format, chain N [auth A] MOL2 format, chain OA [auth D] MOL2 format, chain PA [auth D] MOL2 format, chain QB [auth G] MOL2 format, chain RA [auth D] MOL2 format, chain T [auth B] MOL2 format, chain V [auth B] MOL2 format, chain WB [auth G] MOL2 format, chain X [auth B] MOL2 format, chain XA [auth E] MOL2 format, chain YB [auth G] MOL2 format, chain ZA [auth E] MOL2 format, chain HA [auth C] mmCIF format, chain DA [auth C] mmCIF format, chain FA [auth C] mmCIF format, chain HB [auth F] mmCIF format, chain IB [auth F] mmCIF format, chain J [auth A] mmCIF format, chain KB [auth F] mmCIF format, chain L [auth A] mmCIF format, chain MB [auth F] mmCIF format, chain N [auth A] mmCIF format, chain OA [auth D] mmCIF format, chain PA [auth D] mmCIF format, chain QB [auth G] mmCIF format, chain RA [auth D] mmCIF format, chain T [auth B] mmCIF format, chain V [auth B] mmCIF format, chain WB [auth G] mmCIF format, chain X [auth B] mmCIF format, chain XA [auth E] mmCIF format, chain YB [auth G] mmCIF format, chain ZA [auth E] mmCIF format, chain HA [auth C]	DA [auth C] FA [auth C] HA [auth C] HB [auth F] IB [auth F] DA [auth C], FA [auth C], HA [auth C], HB [auth F], IB [auth F], J [auth A], KB [auth F], L [auth A], MB [auth F], N [auth A], OA [auth D], PA [auth D], QB [auth G], RA [auth D], T [auth B], V [auth B], WB [auth G], X [auth B], XA [auth E], YB [auth G], ZA [auth E]	TETRADECANE C₁₄ H₃₀ BGHCVCJVXZWKCC-UHFFFAOYSA-N		Interactions Focus chain DA [auth C] Focus chain FA [auth C] Focus chain HA [auth C] Focus chain HB [auth F] Focus chain IB [auth F] Focus chain J [auth A] Focus chain KB [auth F] Focus chain L [auth A] Focus chain MB [auth F] Focus chain N [auth A] Focus chain OA [auth D] Focus chain PA [auth D] Focus chain QB [auth G] Focus chain RA [auth D] Focus chain T [auth B] Focus chain V [auth B] Focus chain WB [auth G] Focus chain X [auth B] Focus chain XA [auth E] Focus chain YB [auth G] Focus chain ZA [auth E] Interactions & Density Focus chain DA [auth C] Focus chain FA [auth C] Focus chain HA [auth C] Focus chain HB [auth F] Focus chain IB [auth F] Focus chain J [auth A] Focus chain KB [auth F] Focus chain L [auth A] Focus chain MB [auth F] Focus chain N [auth A] Focus chain OA [auth D] Focus chain PA [auth D] Focus chain QB [auth G] Focus chain RA [auth D] Focus chain T [auth B] Focus chain V [auth B] Focus chain WB [auth G] Focus chain X [auth B] Focus chain XA [auth E] Focus chain YB [auth G] Focus chain ZA [auth E]
D12 (Subject of Investigation/LOI) Query on D12 Download:Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain EB [auth F] SDF format, chain GA [auth C] SDF format, chain LA [auth C] SDF format, chain LB [auth F] SDF format, chain M [auth A] SDF format, chain PB [auth G] SDF format, chain Q [auth A] SDF format, chain QA [auth D] SDF format, chain TB [auth G] SDF format, chain UA [auth D] SDF format, chain W [auth B] SDF format, chain DB [auth E] SDF format, chain AB [auth E] MOL2 format, chain AA [auth B] MOL2 format, chain EB [auth F] MOL2 format, chain GA [auth C] MOL2 format, chain LA [auth C] MOL2 format, chain LB [auth F] MOL2 format, chain M [auth A] MOL2 format, chain PB [auth G] MOL2 format, chain Q [auth A] MOL2 format, chain QA [auth D] MOL2 format, chain TB [auth G] MOL2 format, chain UA [auth D] MOL2 format, chain W [auth B] MOL2 format, chain DB [auth E] MOL2 format, chain AB [auth E] mmCIF format, chain AA [auth B] mmCIF format, chain EB [auth F] mmCIF format, chain GA [auth C] mmCIF format, chain LA [auth C] mmCIF format, chain LB [auth F] mmCIF format, chain M [auth A] mmCIF format, chain PB [auth G] mmCIF format, chain Q [auth A] mmCIF format, chain QA [auth D] mmCIF format, chain TB [auth G] mmCIF format, chain UA [auth D] mmCIF format, chain W [auth B] mmCIF format, chain DB [auth E] mmCIF format, chain AB [auth E]	AA [auth B] AB [auth E] DB [auth E] EB [auth F] GA [auth C] AA [auth B], AB [auth E], DB [auth E], EB [auth F], GA [auth C], LA [auth C], LB [auth F], M [auth A], PB [auth G], Q [auth A], QA [auth D], TB [auth G], UA [auth D], W [auth B]	DODECANE C₁₂ H₂₆ SNRUBQQJIBEYMU-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain AB [auth E] Focus chain DB [auth E] Focus chain EB [auth F] Focus chain GA [auth C] Focus chain LA [auth C] Focus chain LB [auth F] Focus chain M [auth A] Focus chain PB [auth G] Focus chain Q [auth A] Focus chain QA [auth D] Focus chain TB [auth G] Focus chain UA [auth D] Focus chain W [auth B] Interactions & Density Focus chain AA [auth B] Focus chain AB [auth E] Focus chain DB [auth E] Focus chain EB [auth F] Focus chain GA [auth C] Focus chain LA [auth C] Focus chain LB [auth F] Focus chain M [auth A] Focus chain PB [auth G] Focus chain Q [auth A] Focus chain QA [auth D] Focus chain TB [auth G] Focus chain UA [auth D] Focus chain W [auth B]
D10 (Subject of Investigation/LOI) Query on D10 Download:Ideal Coordinates CCD File SDF format, chain BB [auth E] SDF format, chain EA [auth C] SDF format, chain IA [auth C] SDF format, chain JB [auth F] SDF format, chain K [auth A] SDF format, chain O [auth A] SDF format, chain RB [auth G] SDF format, chain SA [auth D] SDF format, chain U [auth B] SDF format, chain XB [auth G] SDF format, chain Y [auth B] SDF format, chain YA [auth E] SDF format, chain NB [auth F] SDF format, chain JA [auth C] MOL2 format, chain BB [auth E] MOL2 format, chain EA [auth C] MOL2 format, chain IA [auth C] MOL2 format, chain JB [auth F] MOL2 format, chain K [auth A] MOL2 format, chain O [auth A] MOL2 format, chain RB [auth G] MOL2 format, chain SA [auth D] MOL2 format, chain U [auth B] MOL2 format, chain XB [auth G] MOL2 format, chain Y [auth B] MOL2 format, chain YA [auth E] MOL2 format, chain NB [auth F] MOL2 format, chain JA [auth C] mmCIF format, chain BB [auth E] mmCIF format, chain EA [auth C] mmCIF format, chain IA [auth C] mmCIF format, chain JB [auth F] mmCIF format, chain K [auth A] mmCIF format, chain O [auth A] mmCIF format, chain RB [auth G] mmCIF format, chain SA [auth D] mmCIF format, chain U [auth B] mmCIF format, chain XB [auth G] mmCIF format, chain Y [auth B] mmCIF format, chain YA [auth E] mmCIF format, chain NB [auth F] mmCIF format, chain JA [auth C]	BB [auth E] EA [auth C] IA [auth C] JA [auth C] JB [auth F] BB [auth E], EA [auth C], IA [auth C], JA [auth C], JB [auth F], K [auth A], NB [auth F], O [auth A], RB [auth G], SA [auth D], U [auth B], XB [auth G], Y [auth B], YA [auth E]	DECANE C₁₀ H₂₂ DIOQZVSQGTUSAI-UHFFFAOYSA-N		Interactions Focus chain BB [auth E] Focus chain EA [auth C] Focus chain IA [auth C] Focus chain JA [auth C] Focus chain JB [auth F] Focus chain K [auth A] Focus chain NB [auth F] Focus chain O [auth A] Focus chain RB [auth G] Focus chain SA [auth D] Focus chain U [auth B] Focus chain XB [auth G] Focus chain Y [auth B] Focus chain YA [auth E] Interactions & Density Focus chain BB [auth E] Focus chain EA [auth C] Focus chain IA [auth C] Focus chain JA [auth C] Focus chain JB [auth F] Focus chain K [auth A] Focus chain NB [auth F] Focus chain O [auth A] Focus chain RB [auth G] Focus chain SA [auth D] Focus chain U [auth B] Focus chain XB [auth G] 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 CB [auth E] SDF format, chain GB [auth F] SDF format, chain I [auth A] SDF format, chain KA [auth C] SDF format, chain NA [auth D] SDF format, chain OB [auth F] SDF format, chain P [auth A] SDF format, chain S [auth B] SDF format, chain SB [auth G] SDF format, chain TA [auth D] SDF format, chain VB [auth G] SDF format, chain WA [auth E] SDF format, chain Z [auth B] MOL2 format, chain CA [auth C] MOL2 format, chain CB [auth E] MOL2 format, chain GB [auth F] MOL2 format, chain I [auth A] MOL2 format, chain KA [auth C] MOL2 format, chain NA [auth D] MOL2 format, chain OB [auth F] MOL2 format, chain P [auth A] MOL2 format, chain S [auth B] MOL2 format, chain SB [auth G] MOL2 format, chain TA [auth D] MOL2 format, chain VB [auth G] MOL2 format, chain WA [auth E] MOL2 format, chain Z [auth B] mmCIF format, chain CA [auth C] mmCIF format, chain CB [auth E] mmCIF format, chain GB [auth F] mmCIF format, chain I [auth A] mmCIF format, chain KA [auth C] mmCIF format, chain NA [auth D] mmCIF format, chain OB [auth F] mmCIF format, chain P [auth A] mmCIF format, chain S [auth B] mmCIF format, chain SB [auth G] mmCIF format, chain TA [auth D] mmCIF format, chain VB [auth G] mmCIF format, chain WA [auth E] mmCIF format, chain Z [auth B]	CA [auth C] CB [auth E] GB [auth F] I [auth A] KA [auth C] CA [auth C], CB [auth E], GB [auth F], I [auth A], KA [auth C], NA [auth D], OB [auth F], P [auth A], S [auth B], SB [auth G], TA [auth D], VB [auth G], WA [auth E], Z [auth B]	N-OCTANE C₈ H₁₈ TVMXDCGIABBOFY-UHFFFAOYSA-N		Interactions Focus chain CA [auth C] Focus chain CB [auth E] Focus chain GB [auth F] Focus chain I [auth A] Focus chain KA [auth C] Focus chain NA [auth D] Focus chain OB [auth F] Focus chain P [auth A] Focus chain S [auth B] Focus chain SB [auth G] Focus chain TA [auth D] Focus chain VB [auth G] Focus chain WA [auth E] Focus chain Z [auth B] Interactions & Density Focus chain CA [auth C] Focus chain CB [auth E] Focus chain GB [auth F] Focus chain I [auth A] Focus chain KA [auth C] Focus chain NA [auth D] Focus chain OB [auth F] Focus chain P [auth A] Focus chain S [auth B] Focus chain SB [auth G] Focus chain TA [auth D] Focus chain VB [auth G] Focus chain WA [auth E] Focus chain Z [auth B]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.40 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	4.7
MODEL REFINEMENT	PHENIX	1.20.1_4487

Structure Validation

View Full Validation Report

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