4OFK

Crystal Structure of SYG-2 D4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.192 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Extracellular Architecture of the SYG-1/SYG-2 Adhesion Complex Instructs Synaptogenesis.

Ozkan, E.Chia, P.H.Wang, R.R.Goriatcheva, N.Borek, D.Otwinowski, Z.Walz, T.Shen, K.Garcia, K.C.

(2014) Cell 156: 482-494

  • DOI: 10.1016/j.cell.2014.01.004
  • Primary Citation of Related Structures:  
    4OFD, 4OFI, 4OF3, 4OF6, 4OF7, 4OF8, 4OF0, 4OFY, 4OFK, 4OFP

  • PubMed Abstract: 
  • SYG-1 and SYG-2 are multipurpose cell adhesion molecules (CAMs) that have evolved across all major animal taxa to participate in diverse physiological functions, ranging from synapse formation to formation of the kidney filtration barrier. In the crystal ...

    SYG-1 and SYG-2 are multipurpose cell adhesion molecules (CAMs) that have evolved across all major animal taxa to participate in diverse physiological functions, ranging from synapse formation to formation of the kidney filtration barrier. In the crystal structures of several SYG-1 and SYG-2 orthologs and their complexes, we find that SYG-1 orthologs homodimerize through a common, bispecific interface that similarly mediates an unusual orthogonal docking geometry in the heterophilic SYG-1/SYG-2 complex. C. elegans SYG-1's specification of proper synapse formation in vivo closely correlates with the heterophilic complex affinity, which appears to be tuned for optimal function. Furthermore, replacement of the interacting domains of SYG-1 and SYG-2 with those from CAM complexes that assume alternative docking geometries or the introduction of segmental flexibility compromised synaptic function. These results suggest that SYG extracellular complexes do not simply act as "molecular velcro" and that their distinct structural features are important in instructing synaptogenesis. PAPERFLICK:


    Organizational Affiliation

    Department of Molecular and Cellular Physiology and Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA; Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA. Electronic address: kcgarcia@stanford.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein SYG-2 AB108Caenorhabditis elegansMutation(s): 0 
Gene Names: C26G2.1CELE_C26G2.1syg-2
Find proteins for Q9U3P2 (Caenorhabditis elegans)
Explore Q9U3P2 
Go to UniProtKB:  Q9U3P2
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
A, B
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
EDO
Query on EDO

Download Ideal Coordinates CCD File 
A, B
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.192 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.812α = 90
b = 54.131β = 104.61
c = 63.623γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
SHELXmodel building
PHASERphasing
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
SHELXphasing
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary