1CPM

NATIVE-LIKE IN VIVO FOLDING OF A CIRCULARLY PERMUTED JELLYROLL PROTEIN SHOWN BY CRYSTAL STRUCTURE ANALYSIS

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.153 
  • R-Value Observed: 0.153 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history. 


Literature

Native-like in vivo folding of a circularly permuted jellyroll protein shown by crystal structure analysis.

Hahn, M., Piotukh, K., Borriss, R., Heinemann, U.

(1994) Proc Natl Acad Sci U S A 91: 10417-10421

  • DOI: 10.1073/pnas.91.22.10417
  • Primary Citation of Related Structures:  
    1CPN, 1CPM

  • PubMed Abstract: 

    • A jellyroll beta-sandwich protein, the Bacillus beta-glucanase H(A16-M), is used to probe the role of N-terminal peptide regions in protein folding in vivo. A gene encoding H(A16-M) is rearranged to place residues 1-58 of the protein behind a signal peptide and residues 59-214 ...

    A jellyroll beta-sandwich protein, the Bacillus beta-glucanase H(A16-M), is used to probe the role of N-terminal peptide regions in protein folding in vivo. A gene encoding H(A16-M) is rearranged to place residues 1-58 of the protein behind a signal peptide and residues 59-214. The rearranged gene is expressed in Escherichia coli. The resultant circularly permuted protein, cpA16M-59, is secreted into the periplasm, correctly processed, and folded into a stable and active enzyme. Crystal structure analysis at 2.0-A resolution, R = 15.3%, shows cpA16M-59 to have a three-dimensional structure nearly identical with that of the parent beta-glucanase. An analogous experiment based on the wild-type Bacillus macerans beta-glucanase, giving rise to the circularly permuted variant cpMAC-57, yields the same results. Folding of these proteins, therefore, is not a vectorial process depending on the conformation adopted by their native N-terminal oligopeptides after ribosomal synthesis and translocation through the cytoplasmic membrane.

    Related Citations: 
    • Molecular and Active-Site Structure of a Bacillus 1,3-1,4-Beta-Glucanase
      Keitel, T., Simon, O., Borriss, R., Heinemann, U.
      (1993) Proc Natl Acad Sci U S A 90: 5287
    Organizational Affiliation: 

    Max-Delbrück-Centrum für Molekulare Medizin, Berlin, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CIRCULARLY PERMUTEDA214Paenibacillus maceransMutation(s): 0 
EC: 3.2.1.73
UniProt
Find proteins for P23904 (Paenibacillus macerans)
Explore P23904 
Go to UniProtKB:  P23904
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA
Download Ideal Coordinates CCD File 
 B [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.153 
  • R-Value Observed: 0.153 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.43α = 90
b = 44.3β = 90
c = 128.34γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
TNTrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-06-22
    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: 2017-11-29
    Changes: Derived calculations, Other
  • Version 1.4: 2019-07-17
    Changes: Data collection, Refinement description
  • Version 1.5: 2019-08-14
    Changes: Data collection, Refinement description