Biological Assembly 1  

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

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

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

Macromolecule Content

• Total Structure Weight: 37.89 kDa 
• Atom Count: 2448 
• Modelled Residue Count: 288 
• Deposited Residue Count: 325 
• Unique protein chains: 1

2J51

Crystal structure of Human STE20-like kinase bound to 5-Amino-3-((4-(aminosulfonyl)phenyl)amino) -N-(2,6-difluorophenyl)-1H-1,2,4-triazole- 1-carbothioamide

• PDB DOI: 10.2210/pdb2J51/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2006-09-08 Released: 2006-10-03 
• Deposition Author(s): Pike, A.C.W., Rellos, P., Fedorov, O., Keates, T., Salah, E., Savitsky, P., Papagrigoriou, E., Turnbull, A.P., Debreczeni, J.E., von Delft, F., Arrowsmith, C., Edwards, A., Weigelt, J., Sundstrom, M., Knapp, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.233 
• R-Value Work: 0.201 
• R-Value Observed: 0.202 

Literature

Activation Segment Dimerization: A Mechanism for Kinase Autophosphorylation of Non-Consensus Sites.

Pike, A.C.W., Rellos, P., Niesen, F.H., Turnbull, A., Oliver, A.W., Parker, S.A., Turk, B.E., Pearl, L.H., Knapp, S.

(2008) EMBO J 27: 704

• PubMed: 18239682 
• DOI: 10.1038/emboj.2008.8
• Primary Citation of Related Structures:  
  2J51, 2J7T, 2J90, 2JFL, 2JFM, 2UV2


• PubMed Abstract: 
  

Protein kinase autophosphorylation of activation segment residues is a common regulatory mechanism in phosphorylation-dependent signalling cascades. However, the molecular mechanisms that guarantee specific and efficient phosphorylation of these sites have not been elucidated. Here, we report on three novel and diverse protein kinase structures that reveal an exchanged activation segment conformation. This dimeric arrangement results in an active kinase conformation in trans, with activation segment phosphorylation sites in close proximity to the active site of the interacting protomer. Analytical ultracentrifugation and chemical cross-linking confirmed the presence of dimers in solution. Consensus substrate sequences for each kinase showed that the identified activation segment autophosphorylation sites are non-consensus substrate sites. Based on the presented structural and functional data, a model for specific activation segment phosphorylation at non-consensus substrate sites is proposed that is likely to be common to other kinases from diverse subfamilies.

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Organizational Affiliation: 

Structural Genomics Consortium, Botnar Research Centre, University of Oxford, Oxford, UK.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
STE20-LIKE SERINE/THREONINE-PROTEIN KINASE	A	325	Homo sapiens	Mutation(s): 0  Gene Names: SLK, KIAA0204, STK2 EC: 2.7.11.1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9H2G2 (Homo sapiens) Explore Q9H2G2  Go to UniProtKB:  Q9H2G2
PHAROS:  Q9H2G2 GTEx:  ENSG00000065613

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DKI	G [auth A]	5-AMINO-3-{[4-(AMINOSULFONYL)PHENYL]AMINO}-N-(2,6-DIFLUOROPHENYL)-1H-1,2,4-TRIAZOLE-1-CARBOTHIOAMIDE C15 H13 F2 N7 O2 S2 ARIOBGGRZJITQX-UHFFFAOYSA-N
EDO	B [auth A], C [auth A], D [auth A], E [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
SCN	F [auth A]	THIOCYANATE ION C N S ZMZDMBWJUHKJPS-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.233 
• R-Value Work: 0.201 
• R-Value Observed: 0.202 
• Space Group: P 6₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 101.195	α = 90
b = 101.195	β = 90
c = 177.173	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-09-08 
• Released Date: 2006-10-03 
Deposition Author(s): Pike, A.C.W., Rellos, P., Fedorov, O., Keates, T., Salah, E., Savitsky, P., Papagrigoriou, E., Turnbull, A.P., Debreczeni, J.E., von Delft, F., Arrowsmith, C., Edwards, A., Weigelt, J., Sundstrom, M., Knapp, S.

Revision History  

• Version 1.0: 2006-10-03
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance