7CLR image
Deposition Date 2020-07-21
Release Date 2021-06-02
Last Version Date 2025-04-23
Entry Detail
PDB ID:
7CLR
Keywords:
MOTOR PROTEIN
Title:
CryoEM structure of S.typhimurium flagellar LP ring
Biological Source:
Source Organism:
Salmonella enterica subsp. enterica serovar Typhimurium (Taxon ID: 90371)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.50 Å
Aggregation State:
PARTICLE
Reconstruction Method:
SINGLE PARTICLE
7CLR validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Flagellar L-ring protein
Chain IDs:A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Chain Length:365
Number of Molecules:26
Biological Source:Salmonella enterica subsp. enterica serovar Typhimurium
UniProt ID:P15930 Pfam ID:PF02119
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Flagellar P-ring protein
Chain IDs:AA (auth: a), BA (auth: b), CA (auth: c), DA (auth: d), EA (auth: e), FA (auth: f), GA (auth: g), HA (auth: h), IA (auth: i), JA (auth: j), KA (auth: k), LA (auth: l), MA (auth: m), NA (auth: n), OA (auth: o), PA (auth: p), QA (auth: q), RA (auth: r), SA (auth: s), TA (auth: t), UA (auth: u), VA (auth: v), WA (auth: w), XA (auth: x), YA (auth: y), ZA (auth: z)
Chain Length:365
Number of Molecules:26
Biological Source:Salmonella enterica subsp. enterica serovar Typhimurium
UniProt ID:P0A1N8 Pfam ID:PF02107
Ligand Molecules
NA
Primary Citation
Structure of the molecular bushing of the bacterial flagellar motor.
Nat Commun 12 4469 4469 (2021)
PMID: 34294704 DOI: 10.1038/s41467-021-24715-3

Abstact

The basal body of the bacterial flagellum is a rotary motor that consists of several rings (C, MS and LP) and a rod. The LP ring acts as a bushing supporting the distal rod for its rapid and stable rotation without much friction. Here, we use electron cryomicroscopy to describe the LP ring structure around the rod, at 3.5 Å resolution, from Salmonella Typhimurium. The structure shows 26-fold rotational symmetry and intricate intersubunit interactions of each subunit with up to six partners, which explains the structural stability. The inner surface is charged both positively and negatively. Positive charges on the P ring (the part of the LP ring that is embedded within the peptidoglycan layer) presumably play important roles in its initial assembly around the rod with a negatively charged surface.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
7CLR