Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 20984.66 
• Atom Count: 1481 
• Residue Count: 180 
• Unique protein chains: 1

1KGD

Crystal Structure of the Guanylate Kinase-like Domain of Human CASK

• DOI: 10.2210/pdb1KGD/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli


• Deposited: 2001-11-26 Released: 2001-12-19 
• Deposition Author(s): Li, Y., Spangenberg, O., Paarmann, I., Konrad, M., Lavie, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.314 Å
• R-Value Free: 0.212 
• R-Value Work: 0.186 

Literature

Structural basis for nucleotide-dependent regulation of membrane-associated guanylate kinase-like domains.

Li, Y., Spangenberg, O., Paarmann, I., Konrad, M., Lavie, A.

(2002) J.Biol.Chem. 277: 4159-4165

• PubMed: 11729206 
• DOI: 10.1074/jbc.M110792200


• PubMed Abstract: 
  

CASK is a member of the membrane-associated guanylate kinases (MAGUK) homologs, a family of proteins that scaffold protein complexes at particular regions of the plasma membrane by utilizing multiple protein-binding domains. The GK domain of MAGUKs, which shares high similarity in amino acid sequence with yeast guanylate kinase (yGMPK), is the least characterized MAGUK domain both in structure and function. In addition to its scaffolding function, the GK domain of hCASK has been shown to be involved in transcription regulation. Here we report the crystal structure of the GK domain of human CASK (hCASK-GK) at 1.3-A resolution. The structure rationalizes the inability of the GK domain to catalyze phosphoryl transfer and strongly supports its new function as a protein-binding module. Comparison of the hCASK-GK structure with the available crystal structures of yGMPK provides insight into possible conformational changes that occur in hCASK upon GMP binding. These conformational changes may act to regulate hCASK-GK function in a nucleotide-dependent manner.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Biology, University of Illinois at Chicago, 60607, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PERIPHERAL PLASMA MEMBRANE CASK	A	180	Homo sapiens	Mutation(s): 0  Gene Names: CASK (LIN2) EC: 2.7.11.1
Find proteins for O14936 (Homo sapiens) Go to Gene View: CASK Go to UniProtKB:  O14936

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
FMT	A	FORMIC ACID C H2 O2 BDAGIHXWWSANSR-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.314 Å
• R-Value Free: 0.212 
• R-Value Work: 0.186 
• Space Group: P 3₂ 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 70.341	α = 90.00
b = 70.341	β = 90.00
c = 74.861	γ = 120.00

Software Package:

Software Name	Purpose
SOLVE	phasing
SCALEPACK	data scaling
REFMAC	refinement
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-11-26 
• Released Date: 2001-12-19 
• Deposition Author(s): Li, Y., Spangenberg, O., Paarmann, I., Konrad, M., Lavie, A.

Revision History 

• Version 1.0: 2001-12-19
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance