1FIN

CYCLIN A-CYCLIN-DEPENDENT KINASE 2 COMPLEX

• PDB DOI: https://doi.org/10.2210/pdb1FIN/pdb

• Classification: COMPLEX (TRANSFERASE/CYCLIN)
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda, Escherichia coli
• Mutation(s): No 


• Deposited: 1996-07-14 Released: 1997-01-27 
• Deposition Author(s): Jeffrey, P.D., Russo, A.A., Pavletich, N.P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Work: 0.208 

Literature

Mechanism of CDK activation revealed by the structure of a cyclinA-CDK2 complex.

Jeffrey, P.D., Russo, A.A., Polyak, K., Gibbs, E., Hurwitz, J., Massague, J., Pavletich, N.P.

(1995) Nature 376: 313-320

• PubMed: 7630397 
• DOI: https://doi.org/10.1038/376313a0
• Primary Citation of Related Structures:  
  1FIN


• PubMed Abstract: 
  

  The crystal structure of the human cyclinA-cyclin-dependent kinase2 (CDK2)-ATP complex has been determined at 2.3 A resolution. CyclinA binds to one side of CDK2's catalytic cleft, inducing large conformational changes in its PSTAIRE helix and T-loop. These changes activate the kinase by realigning active site residues and relieving the steric blockade at the entrance of the catalytic cleft.

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Organizational Affiliation: 

Cellular Biochemistry and Biophysics Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 128.7 kDa 
• Atom Count: 9,476 
• Modelled Residue Count: 1,116 
• Deposited Residue Count: 1,116 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYCLIN-DEPENDENT KINASE 2	A, C	298	Homo sapiens	Mutation(s): 0  EC: 2.7.1
UniProt & NIH Common Fund Data Resources
Find proteins for P24941 (Homo sapiens) Go to UniProtKB:  P24941
PHAROS:  P24941 GTEx:  ENSG00000123374

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
CYCLIN A	B, D	260	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P20248 (Homo sapiens) Explore P20248  Go to UniProtKB:  P20248
PHAROS:  P20248 GTEx:  ENSG00000145386

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ATP	E [auth A], F [auth C]	ADENOSINE-5'-TRIPHOSPHATE C10 H16 N5 O13 P3 ZKHQWZAMYRWXGA-KQYNXXCUSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Work: 0.208 
• Space Group: P 6₂ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 185.1	α = 90
b = 185.1	β = 90
c = 214.4	γ = 120

Software Package:

Software Name	Purpose
TNT	refinement
HKL	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-01-27 
Deposition Author(s): Jeffrey, P.D., Russo, A.A., Pavletich, N.P.

Revision History  

• Version 1.0: 1997-01-27
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references, Derived calculations, Other