2NUL

PEPTIDYLPROLYL ISOMERASE FROM E. COLI

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.160 
  • R-Value Observed: 0.160 

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This is version 1.3 of the entry. See complete history. 


Literature

Crystal structure of cytoplasmic Escherichia coli peptidyl-prolyl isomerase: evidence for decreased mobility of loops upon complexation.

Edwards, K.J., Ollis, D.L., Dixon, N.E.

(1997) J Mol Biol 271: 258-265

  • DOI: 10.1006/jmbi.1997.1151
  • Primary Citation of Related Structures:  
    2NUL

  • PubMed Abstract: 

    • The structure of the unliganded form of the Escherichia coli cytoplasmic peptidyl-prolyl isomerase (ppiB gene product) in a new crystal form was determined by the molecular replacement method and refined to an R-factor of 16.1% at 2.1 A resolution. The enzyme crystallized in the orthorhombic C2221 space group with unit cell dimensions of a=44 ...

    The structure of the unliganded form of the Escherichia coli cytoplasmic peptidyl-prolyl isomerase (ppiB gene product) in a new crystal form was determined by the molecular replacement method and refined to an R-factor of 16.1% at 2.1 A resolution. The enzyme crystallized in the orthorhombic C2221 space group with unit cell dimensions of a=44.7 A, b=68.2 A and c=102.0 A. Comparison with the reported structure of the enzyme complexed with the tripeptide substrate succinyl-Ala-Pro-Ala-p-nitroanilide revealed subtle changes that occur upon complex formation. There is evidence to suggest that two surface loops have significantly reduced mobility in the complexed structure.

    Organizational Affiliation: 

    Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PEPTIDYLPROLYL ISOMERASE A164Escherichia coliMutation(s): 0 
EC: 5.2.1.8
Find proteins for P23869 (Escherichia coli (strain K12))
Explore P23869 
Go to UniProtKB:  P23869
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.160 
  • R-Value Observed: 0.160 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.7α = 90
b = 68.2β = 90
c = 102γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
RIGAKUdata reduction
RIGAKUdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-11-19
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model