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TitleStructure of the native chemotaxis core signaling unit from phage E-protein lysed cells.
Journal, issue, pagesmBio, Vol. 14, Issue 5, Page e0079323, Year 2023
Publish dateSep 29, 2023
AuthorsC Keith Cassidy / Zhuan Qin / Thomas Frosio / Khoosheh Gosink / Zhengyi Yang / Mark S P Sansom / Phillip J Stansfeld / John S Parkinson / Peijun Zhang /
PubMed AbstractBacterial chemotaxis is a ubiquitous behavior that enables cell movement toward or away from specific chemicals. It serves as an important model for understanding cell sensory signal transduction and ...Bacterial chemotaxis is a ubiquitous behavior that enables cell movement toward or away from specific chemicals. It serves as an important model for understanding cell sensory signal transduction and motility. Characterization of the molecular mechanisms underlying chemotaxis is of fundamental interest and requires a high-resolution structural picture of the sensing machinery, the chemosensory array. In this study, we combine cryo-electron tomography and molecular simulation to present the complete structure of the core signaling unit, the basic building block of chemosensory arrays, from . Our results provide new insight into previously poorly-resolved regions of the complex and offer a structural basis for designing new experiments to test mechanistic hypotheses.
External linksmBio / PubMed:37772839 / PubMed Central
MethodsEM (subtomogram averaging)
Resolution11.0 - 12.5 Å
Structure data

15641

8c5v

EMDB-15641: Structure of the Native Chemotaxis Core Signalling Complex from E-gene lysed E. coli cells.
PDB-8c5v: Chemotaxis core signalling unit from E protein lysed E. coli cells
Method: EM (subtomogram averaging) / Resolution: 12.0 Å

EMDB-15642: Native Chemotaxis Core Signalling Complex from E. coli, with focused alignment on the baseplate (CheA-CheW)
Method: EM (subtomogram averaging) / Resolution: 11.0 Å

EMDB-15643: Native Chemotaxis Core Signalling Complex from E. coli, Focused alignment on ligand binding domain
Method: EM (subtomogram averaging) / Resolution: 12.5 Å

Source
  • escherichia coli (E. coli)
KeywordsMEMBRANE PROTEIN / Chemotaxis / Signal Transduction

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