1MPR

MALTOPORIN FROM SALMONELLA TYPHIMURIUM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of maltoporin from Salmonella typhimurium ligated with a nitrophenyl-maltotrioside.

Meyer, J.E.Hofnung, M.Schulz, G.E.

(1997) J Mol Biol 266: 761-775

  • DOI: 10.1006/jmbi.1996.0823
  • Primary Citation of Related Structures:  
    1MPR, 2MPR

  • PubMed Abstract: 
  • The maltodextrin-specific (malto-)porin from Salmonella typhimurium has been crystallized. Its three-dimensional structure was determined at 2.4 A resolution (1 A = 0.1 nm). A comparison with the structure of the homologous porin from Escherichia coli as well as with the sequences of other related porins showed that there are regions of appreciable sequence and structure variability, despite close overall similarity ...

    The maltodextrin-specific (malto-)porin from Salmonella typhimurium has been crystallized. Its three-dimensional structure was determined at 2.4 A resolution (1 A = 0.1 nm). A comparison with the structure of the homologous porin from Escherichia coli as well as with the sequences of other related porins showed that there are regions of appreciable sequence and structure variability, despite close overall similarity. The maltoporin structure was analyzed with a bound nitrophenyl-maltotrioside as well as without ligand. Maltotrioside binding had a negligible effect on the polypeptide structure. It binds at the pore eyelet assuming a conformation close to the natural amylose helix.


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie Albert-Ludwigs-Universität, Freiburg im Breisgau Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MALTOPORINA, B, C427Salmonella enterica subsp. enterica serovar TyphimuriumMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for P26466 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Explore P26466 
Go to UniProtKB:  P26466
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP26466
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 
D [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.183 
  • R-Value Observed: 0.183 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 124.5α = 90
b = 211.8β = 90
c = 184.3γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
RAVEmodel building
X-PLORmodel building
X-PLORrefinement
RAVEphasing
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-03-12
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance