1Z7Q

Crystal structure of the 20s proteasome from yeast in complex with the proteasome activator PA26 from Trypanosome brucei at 3.2 angstroms resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.22 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.263 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The 1.9 A structure of a proteasome-11S activator complex and implications for proteasome-PAN/PA700 interactions.

Forster, A.Masters, E.I.Whitby, F.G.Robinson, H.Hill, C.P.

(2005) Mol.Cell 18: 589-599

  • DOI: 10.1016/j.molcel.2005.04.016
  • Primary Citation of Related Structures:  1YA7, 1YAR, 1YAU

  • PubMed Abstract: 
  • Proteasomes are cylindrical structures that function in multiple cellular processes by degrading a wide variety of cytosolic and nuclear proteins. Substrate access and product release from the enclosed catalytic chamber occurs through axial pores tha ...

    Proteasomes are cylindrical structures that function in multiple cellular processes by degrading a wide variety of cytosolic and nuclear proteins. Substrate access and product release from the enclosed catalytic chamber occurs through axial pores that are opened by activator complexes. Here, we report high-resolution structures of wild-type and mutant archaeal proteasomes bound to the activator PA26. These structures support the proposal that an ordered open conformation is required for proteolysis and that its formation can be triggered by outward displacement of surrounding residues. The structures and associated biochemical assays reveal the mechanism of binding, which involves an interaction between the PA26 C terminus and a conserved lysine. Surprisingly, biochemical observations implicate an equivalent interaction for the unrelated ATP-dependent activators PAN and PA700.


    Organizational Affiliation

    Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, Utah 84132, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proteasome component C7-alpha
A, O
252Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
B, P
250Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
C, Q
258Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
D, R
254Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
E, S
260Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
F, T
234Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
G, U
288Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
H, V
196Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
I, W
222Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
J, X
205Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
K, Y
198Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
L, Z
212Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
Potential proteasome component C5
M, a
222Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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
N, b
233Saccharomyces cerevisiae (strain ATCC 204508 / S288c)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 protein PA26
c, d, e, f, g, h, i, j, k, l, m, n, o, p
231Trypanosoma bruceiN/A
Find proteins for Q9U8G2 (Trypanosoma brucei)
Go to UniProtKB:  Q9U8G2
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.22 Å
  • R-Value Free: 0.308 
  • R-Value Work: 0.263 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 192.964α = 90.00
b = 232.127β = 90.00
c = 296.772γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-09
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2014-12-03
    Type: Other