5L1M

CASKIN2 SAM domain tandem

• PDB DOI: https://doi.org/10.2210/pdb5L1M/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2016-07-29 Released: 2016-08-10 
• Deposition Author(s): Donaldson, L.W., Kwan, J.J., Saridakis, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.265 
• R-Value Work: 0.245 
• R-Value Observed: 0.247 

Literature

A new mode of SAM domain mediated oligomerization observed in the CASKIN2 neuronal scaffolding protein.

Smirnova, E., Kwan, J.J., Siu, R., Gao, X., Zoidl, G., Demeler, B., Saridakis, V., Donaldson, L.W.

(2016) Cell Commun Signal 14: 17-17

• PubMed: 27549312 
• DOI: https://doi.org/10.1186/s12964-016-0140-3
• Primary Citation of Related Structures:  
  5L1M


• PubMed Abstract: 
  

  CASKIN2 is a homolog of CASKIN1, a scaffolding protein that participates in a signaling network with CASK (calcium/calmodulin-dependent serine kinase). Despite a high level of homology between CASKIN2 and CASKIN1, CASKIN2 cannot bind CASK due to the absence of a CASK Interaction Domain and consequently, may have evolved undiscovered structural and functional distinctions.

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Organizational Affiliation: 

Department of Biology, York University, 4700 Keele Street, Toronto, ON, M3J 1P3, Canada.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 20.31 kDa 
• Atom Count: 1,100 
• Modelled Residue Count: 140 
• Deposited Residue Count: 184 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Caskin-2	A	184	Homo sapiens	Mutation(s): 0  Gene Names: CASKIN2, KIAA1139
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WXE0 (Homo sapiens) Explore Q8WXE0  Go to UniProtKB:  Q8WXE0
PHAROS:  Q8WXE0 GTEx:  ENSG00000177303

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.265 
• R-Value Work: 0.245 
• R-Value Observed: 0.247 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 96.46	α = 90
b = 96.46	β = 90
c = 119.17	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
PHENIX	phasing
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-08-10 
Deposition Author(s): Donaldson, L.W., Kwan, J.J., Saridakis, V.

Revision History  

• Version 1.0: 2016-08-10
  Type: Initial release
  
• Version 1.1: 2016-09-07
  Changes: Database references
• Version 1.2: 2017-11-01
  Changes: Advisory, Author supporting evidence, Derived calculations
• Version 1.3: 2023-02-08
  Changes: Advisory, Database references
• Version 1.4: 2023-10-04
  Changes: Data collection