1LOF

X-RAY STRUCTURE OF A BIANTENNARY OCTASACCHARIDE-LECTIN COMPLEX AT 2.3 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray structure of a biantennary octasaccharide-lectin complex refined at 2.3-A resolution.

Bourne, Y.Rouge, P.Cambillau, C.

(1992) J.Biol.Chem. 267: 197-203


  • PubMed Abstract: 
  • The structure and flexibility of saccharides have a profound and specific influence in several biological processes such as protein protection and the maintenance of conformational integrity, and in recognition events involving viruses, enzymes, and ...

    The structure and flexibility of saccharides have a profound and specific influence in several biological processes such as protein protection and the maintenance of conformational integrity, and in recognition events involving viruses, enzymes, and lectins. To establish the structural bases of these phenomena, we describe herein the extensively refined 2.3-A resolution x-ray structure of a biantennary octasaccharide of the N-acetyllactosamine type, complexed to isolectin I from Lathyrus ochrus. The two octasaccharides are located in clefts at each end of the long axis of the lectin. The conformations of both the lectin and the saccharide are slightly modified upon binding. The complex is stabilized by numerous hydrogen bonds, many of them involving water molecules. It is also stabilized by van der Waals interactions, including some with aromatic residues. A more general model of a possible lectin-glycoprotein interaction is also proposed.


    Organizational Affiliation

    Laboratoire de Cristallographie et de Cristallisation des Macromolécules Biologiques, Faculté de Médecine Secteur-Nord, Marseille, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LEGUME ISOLECTIN I (ALPHA CHAIN)
A
181Lathyrus ochrusN/A
Find proteins for P04122 (Lathyrus ochrus)
Go to UniProtKB:  P04122
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
LEGUME ISOLECTIN I (BETA CHAIN)
B
52Lathyrus ochrusN/A
Find proteins for P12306 (Lathyrus ochrus)
Go to UniProtKB:  P12306
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
LEGUME ISOLECTIN I (ALPHA CHAIN)
C
181Lathyrus ochrusN/A
Find proteins for P04122 (Lathyrus ochrus)
Go to UniProtKB:  P04122
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
LEGUME ISOLECTIN I (BETA CHAIN)
D
52Lathyrus ochrusN/A
Find proteins for P12306 (Lathyrus ochrus)
Go to UniProtKB:  P12306
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

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A, C
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

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A, C
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
MAN
Query on MAN

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A, C
ALPHA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-PQMKYFCFSA-N
 Ligand Interaction
GAL
Query on GAL

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A
BETA-D-GALACTOSE
C6 H12 O6
WQZGKKKJIJFFOK-FPRJBGLDSA-N
 Ligand Interaction
BMA
Query on BMA

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A
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

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A, C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.190 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 78.300α = 90.00
b = 75.400β = 92.00
c = 103.900γ = 90.00
Software Package:
Software NamePurpose
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-04-30
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance