1ZYS

Co-crystal structure of Checkpoint Kinase Chk1 with a pyrrolo-pyridine inhibitor

• PDB DOI: https://doi.org/10.2210/pdb1ZYS/pdb

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


• Deposited: 2005-06-10 Released: 2006-06-13 
• Deposition Author(s): Stavenger, R.A., Zhao, B., Zhou, B.-B.S., Brown, M.J., Lee, D., Holt, D.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.260 
• R-Value Work: 0.227 

Literature

Pyrrolo[2,3-b]pyridines Inhibit the Checkpoint Kinase Chk1

Stavenger, R.A., Zhao, B., Zhou, B.-B.S., Brown, M.J., Lee, D., Holt, D.A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 32.34 kDa 
• Atom Count: 2,598 
• Modelled Residue Count: 276 
• Deposited Residue Count: 278 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein kinase Chk1	A	273	Homo sapiens	Mutation(s): 0  Gene Names: CHEK1, CHK1 EC: 2.7.1.37 (PDB Primary Data), 2.7.11.1 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for O14757 (Homo sapiens) Explore O14757  Go to UniProtKB:  O14757
PHAROS:  O14757 GTEx:  ENSG00000149554

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
pentapeptide fragment	B	5	N/A	Mutation(s): 0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
199	D [auth A]	N-{5-[4-(4-METHYLPIPERAZIN-1-YL)PHENYL]-1H-PYRROLO[2,3-B]PYRIDIN-3-YL}NICOTINAMIDE C24 H24 N6 O YJWJKKXGAPWLGT-UHFFFAOYSA-N
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.260 
• R-Value Work: 0.227 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 44.901	α = 90
b = 66.056	β = 94.6
c = 58.135	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	model building
CNS	refinement
HKL-2000	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-06-13 
Deposition Author(s): Stavenger, R.A., Zhao, B., Zhou, B.-B.S., Brown, M.J., Lee, D., Holt, D.A.

Revision History  

• Version 1.0: 2006-06-13
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-11
  Changes: Refinement description
• Version 1.4: 2024-02-14
  Changes: Data collection, Database references, Derived calculations