2KR2

Xenopus laevis malectin complexed with maltose (Glcalpha1-4Glc)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Analysis of the specific interactions between the lectin domain of malectin and diglucosides.

Schallus, T.Feher, K.Sternberg, U.Rybin, V.Muhle-Goll, C.

(2010) Glycobiology 20: 1010-1020

  • DOI: 10.1093/glycob/cwq059

  • PubMed Abstract: 
  • The endoplasmic reticulum malectin is a highly conserved protein in the animal kingdom that has no counterpart so far in lower organisms. We recently determined the structure of its conserved domain and found a highly selective binding to Glc(2)Man(9 ...

    The endoplasmic reticulum malectin is a highly conserved protein in the animal kingdom that has no counterpart so far in lower organisms. We recently determined the structure of its conserved domain and found a highly selective binding to Glc(2)Man(9)GlcNAc(2), an intermediate of N-glycosylation. In our quest for putative ligands during the initial characterization of the protein, we noticed that the malectin domain is highly specific for diglucosides but quite tolerant towards the linkage of the glucosidic bond. To understand the molecular requirements for the observed promiscuity of the malectin domain, here we analyze the binding to a range of diglucosides through comparison of the protein chemical shift perturbation patterns and the saturation transfer difference spectra of the ligands including two maltose-mimicking drugs. A comparison of the maltose-bound structure of the malectin domain with the complex of the native ligand nigerose reveals why malectin is able to tolerate such a diversity of ligands.


    Organizational Affiliation

    EMBL, Meyerhofstrasse 1, 69117 Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Malectin-A
A
190Xenopus laevisMutation(s): 0 
Gene Names: mlec-a
Find proteins for Q6INX3 (Xenopus laevis)
Go to UniProtKB:  Q6INX3
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BGC
Query on BGC

Download SDF File 
Download CCD File 
A
BETA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-VFUOTHLCSA-N
 Ligand Interaction
GLC
Query on GLC

Download SDF File 
Download CCD File 
A
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-07-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance