8OY2

Human cyclin-dependent kinase 2 in complex with inhibitor HB-29260


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.62 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.223 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Resistance gene-guided genome mining reveals the roseopurpurins as inhibitors of cyclin-dependent kinases.

Dunbar, K.L.Perlatti, B.Liu, N.Cornelius, A.Mummau, D.Chiang, Y.M.Hon, L.Nimavat, M.Pallas, J.Kordes, S.Ng, H.L.Harvey, C.J.B.

(2023) Proc Natl Acad Sci U S A 120: e2310522120-e2310522120

  • DOI: https://doi.org/10.1073/pnas.2310522120
  • Primary Citation of Related Structures:  
    8OY2

  • PubMed Abstract: 

    With the significant increase in the availability of microbial genome sequences in recent years, resistance gene-guided genome mining has emerged as a powerful approach for identifying natural products with specific bioactivities. Here, we present the use of this approach to reveal the roseopurpurins as potent inhibitors of cyclin-dependent kinases (CDKs), a class of cell cycle regulators implicated in multiple cancers. We identified a biosynthetic gene cluster (BGC) with a putative resistance gene with homology to human CDK2. Using targeted gene disruption and transcription factor overexpression in Aspergillus uvarum , and heterologous expression of the BGC in Aspergillus nidulans, we demonstrated that roseopurpurin C ( 1 ) is produced by this cluster and characterized its biosynthesis. We determined the potency, specificity, and mechanism of action of 1 as well as multiple intermediates and shunt products produced from the BGC. We show that 1 inhibits human CDK2 with a K iapp of 44 nM, demonstrates selectivity for clinically relevant members of the CDK family, and induces G1 cell cycle arrest in HCT116 cells. Structural analysis of 1 complexed with CDK2 revealed the molecular basis of ATP-competitive inhibition.


  • Organizational Affiliation

    Hexagon Bio, Menlo Park, CA 94025.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cyclin-dependent kinase 2300Homo sapiensMutation(s): 0 
Gene Names: CDK2CDKN2
EC: 2.7.11.22
UniProt & NIH Common Fund Data Resources
Find proteins for P24941 (Homo sapiens)
Explore P24941 
Go to UniProtKB:  P24941
PHAROS:  P24941
GTEx:  ENSG00000123374 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP24941
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
W5W (Subject of Investigation/LOI)
Query on W5W

Download Ideal Coordinates CCD File 
B [auth A](1S,2S,11aS)-1-methoxy-1,4,7,10-tetramethyl-2,9-bis(oxidanyl)-2,11a-dihydrobenzo[b][1,4]benzodioxepine-3,6-dione
C18 H20 O7
KMXWTZIYEQGIFH-RYRKJORJSA-N
GOL
Query on GOL

Download Ideal Coordinates CCD File 
C [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.62 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.36α = 90
b = 72.685β = 90
c = 72.959γ = 90
Software Package:
Software NamePurpose
autoPROCdata reduction
XDSdata reduction
MOSFLMdata reduction
autoPROCdata scaling
Aimlessdata scaling
REFMACrefinement
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-29
    Type: Initial release
  • Version 1.1: 2023-12-06
    Changes: Database references