5TXV

HslU P21 cell with 4 hexamers


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 7.086 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.274 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Covalently linked HslU hexamers support a probabilistic mechanism that links ATP hydrolysis to protein unfolding and translocation.

Baytshtok, V.Chen, J.Glynn, S.E.Nager, A.R.Grant, R.A.Baker, T.A.Sauer, R.T.

(2017) J. Biol. Chem. 292: 5695-5704

  • DOI: 10.1074/jbc.M116.768978

  • PubMed Abstract: 
  • The HslUV proteolytic machine consists of HslV, a double-ring self-compartmentalized peptidase, and one or two AAA+ HslU ring hexamers that hydrolyze ATP to power the unfolding of protein substrates and their translocation into the proteolytic chambe ...

    The HslUV proteolytic machine consists of HslV, a double-ring self-compartmentalized peptidase, and one or two AAA+ HslU ring hexamers that hydrolyze ATP to power the unfolding of protein substrates and their translocation into the proteolytic chamber of HslV. Here, we use genetic tethering and disulfide bonding strategies to construct HslU pseudohexamers containing mixtures of ATPase active and inactive subunits at defined positions in the hexameric ring. Genetic tethering impairs HslV binding and degradation, even for pseudohexamers with six active subunits, but disulfide-linked pseudohexamers do not have these defects, indicating that the peptide tether interferes with HslV interactions. Importantly, pseudohexamers containing different patterns of hydrolytically active and inactive subunits retain the ability to unfold protein substrates and/or collaborate with HslV in their degradation, supporting a model in which ATP hydrolysis and linked mechanical function in the HslU ring operate by a probabilistic mechanism.


    Organizational Affiliation

    From the Department of Biology and.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-dependent protease ATPase subunit HslU
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X
442Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: hslU (htpI)
Find proteins for P0A6H5 (Escherichia coli (strain K12))
Go to UniProtKB:  P0A6H5
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 7.086 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.274 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 86.497α = 90.00
b = 420.860β = 98.56
c = 176.418γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHASERphasing
PDB_EXTRACTdata extraction
ADSCdata collection
HKL-2000data reduction
DENZOdata reduction
HKL-2000data scaling
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesAI-16892

Revision History 

  • Version 1.0: 2017-03-01
    Type: Initial release
  • Version 1.1: 2017-03-08
    Type: Database references
  • Version 1.2: 2017-04-19
    Type: Database references
  • Version 1.3: 2017-09-20
    Type: Author supporting evidence, Refinement description