Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 32.86 kDa 
• Atom Count: 2212 
• Modelled Residue Count: 259 
• Deposited Residue Count: 289 
• Unique protein chains: 1

1X8B

Structure of human Wee1A kinase: kinase domain complexed with inhibitor PD0407824

• PDB DOI: 10.2210/pdb1X8B/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2004-08-17 Released: 2005-06-07 
• Deposition Author(s): Squire, C.J., Dickson, J.M., Ivanovic, I., Baker, E.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.81 Å
• R-Value Free: 0.237 
• R-Value Work: 0.218 
• R-Value Observed: 0.219 

Literature

Structure and inhibition of the human cell cycle checkpoint kinase, Wee1A kinase: an atypical tyrosine kinase with a key role in CDK1 regulation

Squire, C.J., Dickson, J.M., Ivanovic, I., Baker, E.N.

(2005) Structure 13: 541-550

• PubMed: 15837193 
• DOI: 10.1016/j.str.2004.12.017
• Primary Citation of Related Structures:  
  1X8B


• PubMed Abstract: 
  

Phosphorylation is critical to regulation of the eukaryotic cell cycle. Entry to mitosis is triggered by the cyclin-dependent kinase CDK1 (Cdc2), which is inactivated during the preceding S and G2 phases by phosphorylation of T14 and Y15. Two homologous kinases, Wee1, which phosphorylates Y15, and Myt1, which phosphorylates both T14 and Y15, mediate this inactivation. We have determined the crystal structure of the catalytic domain of human somatic Wee1 (Wee1A) complexed with an active-site inhibitor at 1.8 A resolution. Although Wee1A is functionally a tyrosine kinase, in sequence and structure it most closely resembles serine/threonine kinases such as Chk1 and cAMP kinases. The crystal structure shows that although the catalytic site closely resembles that of other protein kinases, the activation segment contains Wee1-specific features that maintain it in an active conformation and, together with a key substitution in its glycine-rich loop, help determine its substrate specificity.

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Organizational Affiliation: 

School of Biological Sciences and Centre for Molecular Biodiscovery, University of Auckland, Auckland 1001, New Zealand.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Wee1-like protein kinase	A	289	Homo sapiens	Mutation(s): 0  Gene Names: WEE1 EC: 2.7.1.112 (PDB Primary Data), 2.7.10.2 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P30291 (Homo sapiens) Explore P30291  Go to UniProtKB:  P30291
PHAROS:  P30291

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
824	D [auth A]	9-HYDROXY-4-PHENYLPYRROLO[3,4-C]CARBAZOLE-1,3(2H,6H)-DIONE C20 H12 N2 O3 IAUZTOZLTFSMIE-UHFFFAOYSA-N
MG	B [auth A], C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
824	Binding MOAD:  1X8B	IC50: 97 (nM) from 1 assay(s)
	BindingDB:  1X8B	IC50: 97 (nM) from 1 assay(s)
	PDBBind:  1X8B	IC50: 97 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.81 Å
• R-Value Free: 0.237 
• R-Value Work: 0.218 
• R-Value Observed: 0.219 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.782	α = 90
b = 69.782	β = 90
c = 157.017	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
SOLVE	phasing
REFMAC	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-08-17 
• Released Date: 2005-06-07 
Deposition Author(s): Squire, C.J., Dickson, J.M., Ivanovic, I., Baker, E.N.

Revision History  

• Version 1.0: 2005-06-07
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance