1CFB | pdb_00001cfb

CRYSTAL STRUCTURE OF TANDEM TYPE III FIBRONECTIN DOMAINS FROM DROSOPHILA NEUROGLIAN AT 2.0 ANGSTROMS

• PDB DOI: https://doi.org/10.2210/pdb1CFB/pdb

• Classification: NEURAL ADHESION MOLECULE
• Organism(s): Drosophila melanogaster
• Mutation(s): No 


• Deposited: 1994-08-27 Released: 1994-11-30 
• Deposition Author(s): Huber, A.H., Wang, Y.E., Bieber, A.J., Bjorkman, P.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.202 (Depositor) 
• R-Value Observed: 
  0.202 (Depositor) 

Literature

Crystal structure of tandem type III fibronectin domains from Drosophila neuroglian at 2.0 A.

Huber, A.H., Wang, Y.M., Bieber, A.J., Bjorkman, P.J.

(1994) Neuron 12: 717-731

• PubMed: 7512815 
• DOI: https://doi.org/10.1016/0896-6273(94)90326-3
• Primary Citation Related Structures: 
  1CFB


• PubMed Abstract: 
  

  We report the crystal structure of two adjacent fibronectin type III repeats from the Drosophila neural cell adhesion molecule neuroglian. Each domain consists of two antiparallel beta sheets and is folded topologically identically to single fibronectin type III domains from the extracellular matrix proteins tenascin and fibronectin. beta bulges and left-handed polyproline II helices disrupt the regular beta sheet structure of both neuroglian domains. The hydrophobic interdomain interface includes a metal-binding site, presumably involved in stabilizing the relative orientation between domains and predicted by sequence comparision to be present in the vertebrate homolog molecule L1. The neuroglian domains are related by a near perfect 2-fold screw axis along the longest molecular dimension. Using this relationship, a model for arrays of tandem fibronectin type III repeats in neuroglian and other molecules is proposed.

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Organizational Affiliation: 
• Division of Biology, California Institute of Technology, Pasadena 91125.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 2 generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 23.81 kDa 
• Atom Count: 1,915 
• Modeled Residue Count: 205 
• Deposited Residue Count: 205 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DROSOPHILA NEUROGLIAN	A	205	Drosophila melanogaster	Mutation(s): 0  Gene Names: POTENTIAL
UniProt
Find proteins for P20241 (Drosophila melanogaster) Explore P20241  Go to UniProtKB:  P20241
Glycosylation
Glycosylation Sites: 2		Go to GlyGen: P20241-1

Oligosaccharides

Help  

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	2		N-Glycosylation
Glycosylation Resources
GlyTouCan: G42666HT GlyCosmos: G42666HT GlyGen: G42666HT

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
SO4	D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
NA	E [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.202 (Depositor) 
• R-Value Observed: 0.202 (Depositor) 

Space Group: F 4 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 241.8	α = 90
b = 241.8	β = 90
c = 241.8	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-11-30 
Deposition Author(s): Huber, A.H., Wang, Y.E., Bieber, A.J., Bjorkman, P.J.

Revision History  

• Version 1.0: 1994-11-30
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2017-11-29
  Changes: Advisory, Derived calculations, Other
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary
• Version 2.1: 2024-10-30
  Changes: Advisory, Data collection, Database references, Structure summary