4V7O

Proteasome Activator Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.005 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a Blm10 complex reveals common mechanisms for proteasome binding and gate opening.

Sadre-Bazzaz, K.Whitby, F.G.Robinson, H.Formosa, T.Hill, C.P.

(2010) Mol.Cell 37: 728-735

  • DOI: 10.1016/j.molcel.2010.02.002
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The proteasome is an abundant protease that is critically important for numerous cellular pathways. Proteasomes are activated in vitro by three known classes of proteins/complexes, including Blm10/PA200. Here, we report a 3.4 A resolution crystal str ...

    The proteasome is an abundant protease that is critically important for numerous cellular pathways. Proteasomes are activated in vitro by three known classes of proteins/complexes, including Blm10/PA200. Here, we report a 3.4 A resolution crystal structure of a proteasome-Blm10 complex, which reveals that Blm10 surrounds the proteasome entry pore in the 1.2 MDa complex to form a largely closed dome that is expected to restrict access of potential substrates. This architecture and the observation that Blm10 induces a disordered proteasome gate structure challenge the assumption that Blm10 functions as an activator of proteolysis in vivo. The Blm10 C terminus binds in the same manner as seen for 11S activators and inferred for 19S/PAN activators and indicates a unified model for gate opening. We also demonstrate that Blm10 acts to maintain mitochondrial function. Consistent with the structural data, the C-terminal residues of Blm10 are needed for this activity.


    Organizational Affiliation

    Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84112-5650, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proteasome component C7-alpha
AA, AC, BA, BO
243Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SCL1 (PRC2, PRS2)
EC: 3.4.25.1
Find proteins for P21243 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P21243
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proteasome component Y7
AG, AS, BB, BP
231Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE8 (PRS4)
EC: 3.4.25.1
Find proteins for P23639 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P23639
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Proteasome component Y13
AH, AT, BC, BQ
232Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE9 (PRS5)
EC: 3.4.25.1
Find proteins for P23638 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P23638
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PRE6
AI, AU, BD, BR
227Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE6
EC: 3.4.25.1
Find proteins for P40303 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P40303
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PUP2
AJ, AV, BE, BS
250Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PUP2 (DOA5)
EC: 3.4.25.1
Find proteins for P32379 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P32379
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PRE5
AK, AW, BF, BT
234Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE5
EC: 3.4.25.1
Find proteins for P40302 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P40302
Entity ID: 7
MoleculeChainsSequence LengthOrganismDetails
Proteasome component C1
AL, AX, BG, BU
244Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE10 (PRC1, PRS1)
EC: 3.4.25.1
Find proteins for P21242 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P21242
Entity ID: 8
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PRE3
AB, AD, BH, BV
196Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE3
EC: 3.4.25.1
Find proteins for P38624 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P38624
Entity ID: 9
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PUP1
AM, AY, BI, BW
222Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PUP1
EC: 3.4.25.1
Find proteins for P25043 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P25043
Entity ID: 10
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PUP3
AN, AZ, BJ, BX
204Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PUP3
EC: 3.4.25.1
Find proteins for P25451 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P25451
Entity ID: 11
MoleculeChainsSequence LengthOrganismDetails
Proteasome component C11
AO, A1, BK, BY
198Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE1
EC: 3.4.25.1
Find proteins for P22141 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P22141
Entity ID: 12
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PRE2
AP, A2, BL, BZ
212Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE2 (DOA3, PRG1)
EC: 3.4.25.1
Find proteins for P30656 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P30656
Entity ID: 13
MoleculeChainsSequence LengthOrganismDetails
Proteasome component C5
AQ, A3, BM, B1
222Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE7 (PRS3, PTS1)
EC: 3.4.25.1
Find proteins for P23724 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P23724
Entity ID: 14
MoleculeChainsSequence LengthOrganismDetails
Proteasome component PRE4
AR, A4, BN, B2
233Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PRE4
EC: 3.4.25.1
Find proteins for P30657 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P30657
Entity ID: 15
MoleculeChainsSequence LengthOrganismDetails
Proteasome activator BLM10
AE, AF, B3, B6
76Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: BLM10 (BLM3)
Find proteins for P43583 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P43583
Entity ID: 16
MoleculeChainsSequence LengthOrganismDetails
Proteasome activator BLM10
A5, A7, B4, B7
799Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: BLM10 (BLM3)
Find proteins for P43583 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P43583
Entity ID: 17
MoleculeChainsSequence LengthOrganismDetails
Proteasome activator BLM10
A6, A8, B5, B8
997Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: BLM10 (BLM3)
Find proteins for P43583 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P43583
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.005 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.196 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 236.116α = 90.00
b = 127.739β = 102.85
c = 532.668γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHASERphasing
ADSCdata collection
REFMACrefinement
PHENIXrefinement
PDB_EXTRACTdata extraction
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-07-09
    Type: Initial release
  • Version 1.1: 2014-12-10
    Type: Other
  • Version 1.2: 2017-11-22
    Type: Refinement description