2H6J

Crystal Structure of the Beta F145A Rhodococcus Proteasome


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.262 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Proteasome assembly triggers a switch required for active-site maturation.

Witt, S.Kwon, Y.D.Sharon, M.Felderer, K.Beuttler, M.Robinson, C.V.Baumeister, W.Jap, B.K.

(2006) Structure 14: 1179-1188

  • DOI: 10.1016/j.str.2006.05.019

  • PubMed Abstract: 
  • The processing of propeptides and the maturation of 20S proteasomes require the association of beta rings from two half proteasomes. We propose an assembly-dependent activation model in which interactions between helix (H3 and H4) residues of the opp ...

    The processing of propeptides and the maturation of 20S proteasomes require the association of beta rings from two half proteasomes. We propose an assembly-dependent activation model in which interactions between helix (H3 and H4) residues of the opposing half proteasomes are prerequisite for appropriate positioning of the S2-S3 loop; such positioning enables correct coordination of the active-site residue needed for propeptide cleavage. Mutations of H3 or H4 residues that participate in the association of two half proteasomes inhibit activation and prevent, in nearly all cases, the formation of full proteasomes. In contrast, mutations affecting interactions with residues of the S2-S3 loop allow the assembly of full, but activity impacted, proteasomes. The crystal structure of the inactive H3 mutant, Phe145Ala, shows that the S2-S3 loop is displaced from the position observed in wild-type proteasomes. These data support the proposed assembly-dependent activation model in which the S2-S3 loop acts as an activation switch.


    Organizational Affiliation

    Department of Molecular Structural Biology, Max-Planck-Institute of Biochemistry, Martinsried 82152, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proteasome alpha-type subunit 1
A, B, C, D, E, F, G
259Rhodococcus erythropolisMutation(s): 0 
Gene Names: prcA1
EC: 3.4.25.1
Find proteins for Q53080 (Rhodococcus erythropolis)
Go to UniProtKB:  Q53080
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proteasome beta-type subunit 1
H, I, J, K, L, M, N
294Rhodococcus erythropolisMutation(s): 1 
Gene Names: prcB1
EC: 3.4.25.1
Find proteins for Q53079 (Rhodococcus erythropolis)
Go to UniProtKB:  Q53079
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.262 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 149.437α = 90.00
b = 210.714β = 90.00
c = 248.126γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
CNSphasing
DENZOdata reduction
CNSrefinement
PDB_EXTRACTdata extraction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2006-05-31 
  • Released Date: 2006-08-01 
  • Deposition Author(s): Kwon, Y.D.

Revision History 

  • Version 1.0: 2006-08-01
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description, Structure summary