1A0T

SUCROSE-SPECIFIC PORIN, WITH BOUND SUCROSE MOLECULES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the sucrose-specific porin ScrY from Salmonella typhimurium and its complex with sucrose.

Forst, D.Welte, W.Wacker, T.Diederichs, K.

(1998) Nat.Struct.Mol.Biol. 5: 37-46

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The X-ray structure of a sucrose-specific porin (ScrY) from Salmonella typhimurium has been determined by multiple isomorphous replacement at 2.4 A resolution both in its uncomplexed form and with bound sucrose. ScrY is a noncrystallographic trimer o ...

    The X-ray structure of a sucrose-specific porin (ScrY) from Salmonella typhimurium has been determined by multiple isomorphous replacement at 2.4 A resolution both in its uncomplexed form and with bound sucrose. ScrY is a noncrystallographic trimer of identical subunits, each with 413 structurally well-defined amino acids. A monomer is built up of 18 anti-parallel beta-strands surrounding a hydrophilic pore, with a topology closely similar to that of maltoporin. Two non-overlapping sucrose-binding sites were identified in difference Fourier maps. The higher permeability for sucrose of ScrY as compared to maltoporin is mainly accounted for by differences in their pore-lining residues.


    Related Citations: 
    • Crystallization and Preliminary X-Ray Diffraction Analysis of Scry, a Specific Bacterial Outer Membrane Porin
      Forst, D.,Schulein, K.,Wacker, T.,Diederichs, K.,Kreutz, W.,Benz, R.,Welte, W.
      (1993) J.Mol.Biol. 229: 258


    Organizational Affiliation

    Institut für Biophysik und Strahlenbiologie, Albert-Ludwigs-Universität, Freiburg im Breisgau, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SUCROSE-SPECIFIC PORIN
P, Q, R
413Salmonella typhimuriumGene Names: scrY
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL
Sub Group: 
Beta-Barrel Membrane Proteins: Porins and Relatives
Protein: 
ScrY sucrose-specific porin
Find proteins for P22340 (Salmonella typhimurium)
Go to UniProtKB:  P22340
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SUC
Query on SUC

Download SDF File 
Download CCD File 
P, Q, R
SUCROSE
C12 H22 O11
CZMRCDWAGMRECN-UGDNZRGBSA-N
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
P, Q, R
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
SUCKd: 50000000 nM BINDINGMOAD
SUCKd: 50000000 nM PDBBIND
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.207 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 111.800α = 90.00
b = 111.800β = 90.00
c = 147.800γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata reduction
X-PLORrefinement
X-PLORphasing
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-03-18
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-04-04
    Type: Data collection, Other