8EXH | pdb_00008exh

Agrobacterium tumefaciens Tpilus


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation 3D Report Full Report

Validation slider image for 8EXH

This is version 1.4 of the entry. See complete history

Literature

Archaeal DNA-import apparatus is homologous to bacterial conjugation machinery

Beltran, L.C.Cvirkaite-Krupovic, V.Miller, J.Wang, F.Kreutzberger, M.A.B.Patkowski, J.B.Costa, T.R.D.Schouten, S.Levental, I.Conticello, V.P.Egelman, E.H.Krupovic, M.

(2023) Nat Commun 14: 666-666

  • DOI: https://doi.org/10.1038/s41467-023-36349-8
  • Primary Citation Related Structures: 
    8DFT, 8DFU, 8EXH

  • PubMed Abstract: 

    Conjugation is a major mechanism of horizontal gene transfer promoting the spread of antibiotic resistance among human pathogens. It involves establishing a junction between a donor and a recipient cell via an extracellular appendage known as the mating pilus. In bacteria, the conjugation machinery is encoded by plasmids or transposons and typically mediates the transfer of cognate mobile genetic elements. Much less is known about conjugation in archaea. Here, we determine atomic structures by cryo-electron microscopy of three conjugative pili, two from hyperthermophilic archaea (Aeropyrum pernix and Pyrobaculum calidifontis) and one encoded by the Ti plasmid of the bacterium Agrobacterium tumefaciens, and show that the archaeal pili are homologous to bacterial mating pili. However, the archaeal conjugation machinery, known as Ced, has been 'domesticated', that is, the genes for the conjugation machinery are encoded on the chromosome rather than on mobile genetic elements, and mediates the transfer of cellular DNA.


  • Organizational Affiliation
    • Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA, 22903, USA.

Macromolecule Content 

  • Total Structure Weight: 295.87 kDa 
  • Atom Count: 20,640 
  • Modeled Residue Count: 2,760 
  • Deposited Residue Count: 2,760 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Protein virB269Agrobacterium fabrum str. C58Mutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P17792 (Agrobacterium fabrum (strain C58 / ATCC 33970))
Explore P17792 
Go to UniProtKB:  P17792
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17792
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
X3D
(Subject of Investigation/LOI)

Query on X3D



Download:Ideal Coordinates CCD File
AB [auth M]
AC [auth m]
BB [auth N]
BC [auth n]
CB [auth O]
AB [auth M],
AC [auth m],
BB [auth N],
BC [auth n],
CB [auth O],
DB [auth P],
EB [auth Q],
FB [auth R],
GB [auth S],
HB [auth T],
IB [auth U],
JB [auth V],
KB [auth W],
LB [auth X],
MB [auth Y],
NB [auth Z],
OA [auth A],
OB [auth a],
PA [auth B],
PB [auth b],
QA [auth C],
QB [auth c],
RA [auth D],
RB [auth d],
SA [auth E],
SB [auth e],
TA [auth F],
TB [auth f],
UA [auth G],
UB [auth g],
VA [auth H],
VB [auth h],
WA [auth I],
WB [auth i],
XA [auth J],
XB [auth j],
YA [auth K],
YB [auth k],
ZA [auth L],
ZB [auth l]
(14S,17R)-20-amino-17-hydroxy-11,17-dioxo-12,16,18-trioxa-17lambda~5~-phosphaicosan-14-yl tetradecanoate
C30 H60 N O8 P
BMOFTHAXXFOIRF-NDEPHWFRSA-N

Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
RECONSTRUCTIONcryoSPARC3.1

Structure Validation

View Full Validation Report



Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM122510

Revision History  (Full details and data files)

  • Version 1.0: 2023-03-22
    Type: Initial release
  • Version 1.1: 2023-04-26
    Changes: Database references
  • Version 1.2: 2024-06-19
    Changes: Data collection
  • Version 1.3: 2024-09-25
    Changes: Data collection, Experimental preparation
  • Version 1.4: 2025-05-21
    Changes: Data collection, Structure summary