1TYF image
Deposition Date 1997-10-13
Release Date 1998-06-17
Last Version Date 2024-02-14
Entry Detail
PDB ID:
1TYF
Keywords:
Title:
THE STRUCTURE OF CLPP AT 2.3 ANGSTROM RESOLUTION SUGGESTS A MODEL FOR ATP-DEPENDENT PROTEOLYSIS
Biological Source:
Source Organism:
Escherichia coli (Taxon ID: 562)
Method Details:
Experimental Method:
Resolution:
2.30 Å
R-Value Free:
0.29
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:CLP PEPTIDASE
Gene (Uniprot):clpP
Chain IDs:A, B, C, D, E, F, G, H, I, J, K, L, M, N
Chain Length:193
Number of Molecules:14
Biological Source:Escherichia coli
Primary Citation
The structure of ClpP at 2.3 A resolution suggests a model for ATP-dependent proteolysis.
Cell(Cambridge,Mass.) 91 447 456 (1997)
PMID: 9390554 DOI: 10.1016/S0092-8674(00)80431-6

Abstact

We have determined the crystal structure of the proteolytic component of the caseinolytic Clp protease (ClpP) from E. coli at 2.3 A resolution using an ab initio phasing procedure that exploits the internal 14-fold symmetry of the oligomer. The structure of a ClpP monomer has a distinct fold that defines a fifth structural family of serine proteases but a conserved catalytic apparatus. The active protease resembles a hollow, solid-walled cylinder composed of two 7-fold symmetric rings stacked back-to-back. Its 14 proteolytic active sites are located within a central, roughly spherical chamber approximately 51 A in diameter. Access to the proteolytic chamber is controlled by two axial pores, each having a minimum diameter of approximately 10 A. From the structural features of ClpP, we suggest a model for its action in degrading proteins.

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