Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Standalone Viewers  
Protein Workshop | Ligand Explorer

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 32861.95 
• Atom Count: 2068 
• Residue Count: 289 
• Unique protein chains: 1

1X8B

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

• DOI: 10.2210/pdb1X8B/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda


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

---

Experimental Data Snapshot

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

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
• Also Cited By: 2IO6, 2IN6


• 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.

---

Organizational Affiliation: 

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

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Wee1-like protein kinase	A	289	Homo sapiens	Mutation(s): 0  Gene Names: WEE1 EC: 2.7.10.2
Find proteins for P30291 (Homo sapiens) Go to Gene View: WEE1 Go to UniProtKB:  P30291

Small Molecules

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

External Ligand Annotations
ID	Binding Affinity (Sequence Identity %)
824	IC50: 97 nM (100) BINDINGDB
824	IC50: 97 nM BINDINGMOAD
824	IC50: 97 nM PDBBIND

Experimental Data & Validation

Experimental Data

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

Unit Cell:

Length (Å)	Angle (°)
a = 69.782	α = 90.00
b = 69.782	β = 90.00
c = 157.017	γ = 90.00

Software Package:

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

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
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance