1OFH

Asymmetric complex between HslV and I-domain deleted HslU (H. influenzae)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and Reactivity of an Asymmetric Complex between Hslv and I-Domain Deleted Hslu, a Prokaryotic Homolog of the Eukaryotic Proteasome

Kwon, A.R.Kessler, B.M.Overkleeft, H.S.Mckay, D.B.

(2003) J.Mol.Biol. 330: 185

  • Primary Citation of Related Structures:  1OFI

  • PubMed Abstract: 
  • In the prokaryotic homolog of the eukaryotic proteasome, HslUV, the "double donut" HslV protease is allosterically activated by HslU, an AAA protein of the Clp/Hsp100 family consisting of three (amino-terminal, carboxy-terminal, and intermediate) dom ...

    In the prokaryotic homolog of the eukaryotic proteasome, HslUV, the "double donut" HslV protease is allosterically activated by HslU, an AAA protein of the Clp/Hsp100 family consisting of three (amino-terminal, carboxy-terminal, and intermediate) domains. The intermediate domains of HslU, which extend like tentacles from the hexameric ring formed by the amino-terminal and carboxy-terminal domains, have been deleted; an asymmetric HslU(DeltaI)(6)HslV(12) complex has been crystallized; and the structure has been solved to 2.5A resolution, revealing an assembly in which a HslU(DeltaI) hexamer binds one end of the HslV dodecamer. The conformation of the protomers of the HslU(DeltaI)-complexed HslV hexamer is similar to that in the symmetric wild-type HslUV complex, while the protomer conformation of the uncomplexed HslV hexamer is similar to that of HslV alone. Reaction in the crystals with a vinyl sulfone inhibitor reveals that the HslU(DeltaI)-complexed HslV hexamer is active, while the uncomplexed HslV hexamer is inactive. These results confirm that HslV can be activated by binding of a hexameric HslU(DeltaI)(6) ring lacking the I domains, that activation is effected through a conformational change in HslV rather than through alteration of the size of the entry channel into the protease catalytic cavity, and that the two HslV(6) rings in the protease dodecamer are activated independently rather than cooperatively.


    Related Citations: 
    • Structure of Hsluv Complexed with a Vinyl Sulfone Inhibitor: Corroboration of a Proposed Mechanism of Allosteric Activation of Hslv by Hslu
      Sousa, M.C.,Kessler, B.M.,Overkleeft, H.S.,Mckay, D.B.
      (2002) J.Mol.Biol. 318: 779
    • Crystal and Solution Structures of an Hsluv Protease-Chaperone Complex
      Sousa, M.C.,Trame, C.B.,Tsuruta, H.,Wilbanks, S.M.,Reddy, V.S.,Mckay, D.B.
      (2000) Cell 103: 633


    Organizational Affiliation

    Department of Structural Biology, Stanford University School of Medicine, Sherman Fairchild Building, Stanford, CA 94305, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP-DEPENDENT HSL PROTEASE ATP-BINDING SUBUNIT HSLU
A, B, C
310Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)Gene Names: hslU
Find proteins for P43773 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd))
Go to UniProtKB:  P43773
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ATP-DEPENDENT PROTEASE HSLV
G, H, I, L, M, N
174Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)Gene Names: hslV
EC: 3.4.25.2
Find proteins for P43772 (Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd))
Go to UniProtKB:  P43772
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B, C
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
ADP
Query on ADP

Download SDF File 
Download CCD File 
A, B, C
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
MG
Query on MG

Download SDF File 
Download CCD File 
A, B, C, G, H, I, L, M, N
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.224 
  • Space Group: P 6
Unit Cell:
Length (Å)Angle (°)
a = 192.220α = 90.00
b = 192.220β = 90.00
c = 115.890γ = 120.00
Software Package:
Software NamePurpose
CNSrefinement
AMoREphasing
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-07-03
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance