1ZLT

Crystal Structure of Chk1 Complexed with a Hymenaldisine Analog

• PDB DOI: https://doi.org/10.2210/pdb1ZLT/pdb

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


• Deposited: 2005-05-09 Released: 2006-06-27 
• Deposition Author(s): Lee, C.C., Ng, K., Wan, Y., Gray, N., Spraggon, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.74 Å
• R-Value Free: 0.265 
• R-Value Work: 0.227 

Starting Model: experimental

Literature

Crystal Structure of Chk1 Complexed with a Hymenaldisine Analog

Lee, C.C., Ng, K., Wan, Y., Gray, N., Spraggon, G.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 34.28 kDa 
• Atom Count: 2,438 
• Modelled Residue Count: 272 
• Deposited Residue Count: 295 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein kinase Chk1	A	295	Homo sapiens	Mutation(s): 0  Gene Names: CHEK1, CHK1 EC: 2.7.1.37
UniProt & NIH Common Fund Data Resources
Find proteins for O14757 (Homo sapiens) Explore O14757  Go to UniProtKB:  O14757
PHAROS:  O14757 GTEx:  ENSG00000149554

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HYM	C [auth A]	(4Z)-4-(2-AMINO-5-OXO-3,5-DIHYDRO-4H-IMIDAZOL-4-YLIDENE)-2,3-DICHLORO-4,5,6,7-TETRAHYDROPYRROLO[2,3-C]AZEPIN-8(1H)-ONE C11 H9 Cl2 N5 O2 WMIYIBXBFBOKCT-UTCJRWHESA-N
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.74 Å
• R-Value Free: 0.265 
• R-Value Work: 0.227 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45	α = 90
b = 65.643	β = 94.71
c = 58.112	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-06-27 
Deposition Author(s): Lee, C.C., Ng, K., Wan, Y., Gray, N., Spraggon, G.

Revision History  

• Version 1.0: 2006-06-27
  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: 2018-02-07
  Changes: Experimental preparation
• Version 1.4: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description