4II7

Archaellum Assembly ATPase FlaI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.59 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.243 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Insights into FlaI Functions in Archaeal Motor Assembly and Motility from Structures, Conformations, and Genetics.

Reindl, S.Ghosh, A.Williams, G.J.Lassak, K.Neiner, T.Henche, A.L.Albers, S.V.Tainer, J.A.

(2013) Mol.Cell 49: 1069-1082

  • DOI: 10.1016/j.molcel.2013.01.014
  • Primary Citation of Related Structures:  4IHQ

  • PubMed Abstract: 
  • Superfamily ATPases in type IV pili, type 2 secretion, and archaella (formerly archaeal flagella) employ similar sequences for distinct biological processes. Here, we structurally and functionally characterize prototypical superfamily ATPase FlaI in ...

    Superfamily ATPases in type IV pili, type 2 secretion, and archaella (formerly archaeal flagella) employ similar sequences for distinct biological processes. Here, we structurally and functionally characterize prototypical superfamily ATPase FlaI in Sulfolobus acidocaldarius, showing FlaI activities in archaeal swimming-organelle assembly and movement. X-ray scattering data of FlaI in solution and crystal structures with and without nucleotide reveal a hexameric crown assembly with key cross-subunit interactions. Rigid building blocks form between N-terminal domains (points) and neighboring subunit C-terminal domains (crown ring). Upon nucleotide binding, these six cross-subunit blocks move with respect to each other and distinctly from secretion and pilus ATPases. Crown interactions and conformations regulate assembly, motility, and force direction via a basic-clamp switching mechanism driving conformational changes between stable, backbone-interconnected moving blocks. Collective structural and mutational results identify in vivo functional components for assembly and motility, phosphate-triggered rearrangements by ATP hydrolysis, and molecular predictors for distinct ATPase superfamily functions.


    Organizational Affiliation

    Life Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FlaI ATPase
A, B, C, D
513Sulfolobus acidocaldarius (strain ATCC 33909 / DSM 639 / JCM 8929 / NBRC 15157 / NCIMB 11770)N/A
Find proteins for Q4J9L0 (Sulfolobus acidocaldarius (strain ATCC 33909 / DSM 639 / JCM 8929 / NBRC 15157 / NCIMB 11770))
Go to UniProtKB:  Q4J9L0
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.59 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.243 
  • Space Group: P 63
Unit Cell:
Length (Å)Angle (°)
a = 130.018α = 90.00
b = 130.018β = 90.00
c = 311.772γ = 120.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
HKL-2000data scaling
Blu-Icedata collection
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-03-06
    Type: Initial release
  • Version 1.1: 2013-05-01
    Type: Database references