Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 45.33 kDa 
• Atom Count: 3683 
• Residue Count: 412 
• Unique protein chains: 1

1IU8

The X-ray Crystal Structure of Pyrrolidone-Carboxylate Peptidase from Hyperthermophilic Archaeon Pyrococcus horikoshii

• DOI: 10.2210/pdb1IU8/pdb

• Classification: HYDROLASE
• Organism(s): Pyrococcus horikoshii
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2002-02-28 Released: 2002-03-20 
• Deposition Author(s): Sokabe, M., Kawamura, T., Sakai, N., Yao, M., Watanabe, N., Tanaka, I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.214 
• R-Value Work: 0.189 

Literature

The X-ray crystal structure of pyrrolidone-carboxylate peptidase from hyperthermophilic archaea Pyrococcus horikoshii

Sokabe, M., Kawamura, T., Sakai, N., Yao, M., Watanabe, N., Tanaka, I.

(2002) J Struct Funct Genomics 2: 145-154

• PubMed: 12836705 
• DOI: 10.1023/a:1021257701676
• Primary Citation of Related Structures:  
  1IU8


• PubMed Abstract: 
  

The crystal structure of pyrrolidone-carboxylate peptidase (PCP) from hyperthermophilic archaea Pyrococcus horikoshii (PhoPCP) has been determined at 1.6-A resolution by X-ray crystallography. PCP belongs to the C15 family of cysteine protease, and specifically removes the amino terminal pyroglutamate residue from a wide range of N-terminal-blocking peptides. The crystal structure is very similar to that of other hyperthermophiles, Pyrococcus furiosus and Thermococcus litoralis, and even that from the mesophile, Bacillus amyloliquefaciens. The inter-subunit disulfide bonds, which have been proposed as one of the thermostabilizing factors of the PCP from such hyperthermophiles, was not present in PhoPCP. The result suggests that the thermostability of PhoPCP may be obtained by the accumulation of many weak factors.

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Organizational Affiliation: 

Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060-0810, Japan.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Pyrrolidone-carboxylate peptidase	A, B	206	Pyrococcus horikoshii	Mutation(s): 0  Gene Names: PH0596 EC: 3.4.19.3
Find proteins for O58321 (Pyrococcus horikoshii (strain ATCC 700860 / DSM 12428 / JCM 9974 / NBRC 100139 / OT-3)) Explore O58321  Go to UniProtKB:  O58321

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.214 
• R-Value Work: 0.189 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.899	α = 90
b = 66.479	β = 128.68
c = 76.396	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing
CNS	refinement
CCP4	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-02-28 
• Released Date: 2002-03-20 
Deposition Author(s): Sokabe, M., Kawamura, T., Sakai, N., Yao, M., Watanabe, N., Tanaka, I.

Revision History 

• Version 1.0: 2002-03-20
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance