Agrobacterium tumefaciens Tpilus

Experimental Data Snapshot

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

wwPDB Validation   3D Report Full Report

This is version 1.1 of the entry. See complete history


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 of 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.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein virB269Agrobacterium fabrum str. C58Mutation(s): 0 
Membrane Entity: Yes 
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
  • 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
Experimental Data & Validation

Experimental Data

  • Resolution: 3.50 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion

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