6WQH

Molecular basis for the ATPase-powered substrate translocation by the Lon AAA+ protease


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular basis for ATPase-powered substrate translocation by the Lon AAA+ protease.

Li, S.Hsieh, K.Y.Su, S.C.Pintilie, G.D.Zhang, K.Chang, C.I.

(2021) J Biol Chem 297: 101239-101239

  • DOI: https://doi.org/10.1016/j.jbc.2021.101239
  • Primary Citation of Related Structures:  
    6WQH

  • PubMed Abstract: 

    The Lon AAA+ (adenosine triphosphatases associated with diverse cellular activities) protease (LonA) converts ATP-fuelled conformational changes into sufficient mechanical force to drive translocation of a substrate into a hexameric proteolytic chamber. To understand the structural basis for the substrate translocation process, we determined the cryo-electron microscopy (cryo-EM) structure of Meiothermus taiwanensis LonA (MtaLonA) in a substrate-engaged state at 3.6 Å resolution. Our data indicate that substrate interactions are mediated by the dual pore loops of the ATPase domains, organized in spiral staircase arrangement from four consecutive protomers in different ATP-binding and hydrolysis states. However, a closed AAA+ ring is maintained by two disengaged ADP-bound protomers transiting between the lowest and highest position. This structure reveals a processive rotary translocation mechanism mediated by LonA-specific nucleotide-dependent allosteric coordination among the ATPase domains, which is induced by substrate binding.


  • Organizational Affiliation

    MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Laboratory for Physical Sciences at the Microscale and Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Lon protease794Meiothermus taiwanensisMutation(s): 0 
Gene Names: lonA1lon
EC: 3.4.21.53
UniProt
Find proteins for A0A059VAZ3 (Meiothermus taiwanensis)
Explore A0A059VAZ3 
Go to UniProtKB:  A0A059VAZ3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A059VAZ3
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Ig2 substrateG [auth S]11Dictyostelium discoideumMutation(s): 0 
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
AGS (Subject of Investigation/LOI)
Query on AGS

Download Ideal Coordinates CCD File 
H [auth A],
J [auth B],
L [auth C]
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N
ADP (Subject of Investigation/LOI)
Query on ADP

Download Ideal Coordinates CCD File 
N [auth F],
P [auth D]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
4KZ (Subject of Investigation/LOI)
Query on 4KZ

Download Ideal Coordinates CCD File 
I [auth A]
K [auth B]
M [auth C]
O [auth F]
Q [auth D]
I [auth A],
K [auth B],
M [auth C],
O [auth F],
Q [auth D],
R [auth E]
N-[(1R)-1-(dihydroxyboranyl)-2-phenylethyl]-Nalpha-(pyrazin-2-ylcarbonyl)-L-phenylalaninamide
C22 H23 B N4 O4
ILENEQWIGPQYCQ-ICSRJNTNSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION3.0.2
MODEL REFINEMENTPHENIX1.18

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP41GM103832
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR01GM079429
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesS10OD021600

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-09
    Type: Initial release
  • Version 1.1: 2021-10-13
    Changes: Database references
  • Version 1.2: 2021-11-17
    Changes: Database references