1O70

Novel Fold Revealed by the Structure of a FAS1 Domain Pair from the Insect Cell Adhesion Molecule Fasciclin I

• PDB DOI: https://doi.org/10.2210/pdb1O70/pdb

• Classification: CELL ADHESION
• Organism(s): Drosophila melanogaster
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2002-10-23 Released: 2003-02-13 
• Deposition Author(s): Clout, N.J., Tisi, D., Hohenester, E.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.259 
• R-Value Work: 0.225 
• R-Value Observed: 0.225 

Literature

Novel Fold Revealed by the Structure of a Fas1 Domain Pair from the Insect Cell Adhesion Molecule Fasciclin I

Clout, N.J., Tisi, D., Hohenester, E.

(2003) Structure 11: 197

• PubMed: 12575939 
• DOI: https://doi.org/10.1016/s0969-2126(03)00002-9
• Primary Citation of Related Structures:  
  1O70


• PubMed Abstract: 
  

  Fasciclin I is an insect neural cell adhesion molecule consisting of four FAS1 domains, homologs of which are present in many bacterial, plant, and animal proteins. The crystal structure of FAS1 domains 3 and 4 of Drosophila fasciclin I reveals a novel domain fold, consisting of a seven-stranded beta wedge and a number of alpha helices. The two domains are arranged in a linear fashion and interact through a substantial polar interface. Missense mutations in the FAS1 domains of the human protein betaig-h3 cause corneal dystrophies. Many mutations alter highly conserved core residues, but the two most common mutations, affecting Arg-124 and Arg-555, map to exposed alpha-helical regions, suggesting reduced protein solubility as the disease mechanism.

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Organizational Affiliation: 

Biophysics Section, Department of Biological Sciences, Imperial College, SW7 2AZ, London, United Kingdom.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 37.3 kDa 
• Atom Count: 2,505 
• Modelled Residue Count: 297 
• Deposited Residue Count: 324 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FASCICLIN I	A	324	Drosophila melanogaster	Mutation(s): 0
UniProt
Find proteins for P10674 (Drosophila melanogaster) Explore P10674  Go to UniProtKB:  P10674
Glycosylation
Glycosylation Sites: 1		Go to GlyGen: P10674-1

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D 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 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth A], E [auth A], F [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Free: 0.259 
• R-Value Work: 0.225 
• R-Value Observed: 0.225 
• Space Group: P 4₃ 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 150.806	α = 90
b = 150.806	β = 90
c = 150.806	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling
MLPHARE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2003-02-13 
Deposition Author(s): Clout, N.J., Tisi, D., Hohenester, E.

Revision History  

• Version 1.0: 2003-02-13
  Type: Initial release
  
• Version 1.1: 2012-01-18
  Changes: Derived calculations, Non-polymer description, Other, Refinement description, Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Other, Structure summary