ISDA

Deposition Date 2009-12-31

Release Date 2010-02-16

Last Version Date 2023-12-20

Entry Detail

PDB ID:

2X1N

Keywords:

CELL CYCLE

Title:

Truncation and Optimisation of Peptide Inhibitors of CDK2, Cyclin A Through Structure Guided Design

Biological Source:

Source Organism:

HOMO SAPIENS (Taxon ID: 9606)
SYNTHETIC CONSTRUCT (Taxon ID: 32630)

Host Organism:

SPODOPTERA FRUGIPERDA

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.75 Å

R-Value Free:

0.25

R-Value Work:

0.19

R-Value Observed:

0.20

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CELL DIVISION PROTEIN KINASE 2
Gene (Uniprot):CDK2
Chain IDs:A, C
Chain Length:298
Number of Molecules:2
Biological Source:HOMO SAPIENS

UniProt ID:P24941 Pfam ID:PF00069 EC:2.7.11.22

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CYCLIN-A2
Gene (Uniprot):CCNA2
Chain IDs:B, D
Chain Length:261
Number of Molecules:2
Biological Source:HOMO SAPIENS

UniProt ID:P20248 Pfam ID:PF00134, PF02984

Polymer Type:polypeptide(L)
Molecule:ACE-LEU-ASN-PFF-NH2
Chain IDs:E (auth: H)
Chain Length:5
Number of Molecules:1
Biological Source:SYNTHETIC CONSTRUCT

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
PFF	E	PHE	4-FLUORO-L-PHENYLALANINE

Ligand Molecules

X1N

Primary Citation

Design, Synthesis, and Evaluation of 2-Methyl- and 2-Amino-N-Aryl-4,5-Dihydrothiazolo[4,5-H]Quinazolin-8-Amines as Ring-Constrained 2-Anilino-4-(Thiazol-5-Yl)Pyrimidine Cyclin-Dependent Kinase Inhibitors.

Mcintyre, N.A, Mcinnes, C, Griffiths, G, Barnett, A.L, Kontopidis, G, Slawin, A.M.Z, Jackson, W, Thomas, M, Zheleva, D.I, Wang, S, Blake, D.G, Westwood, N.J, Fischer, P.M, Kontopidis, G, Andrews, M.J, Mcinnes, C, Plater, A, Innes, L, Renachowski, S, Cowan, A, Fischer, P.M.Show

J.Med.Chem. 53 2136 ? (2010)

PMID: 20146435 DOI: 10.1021/JM901660C

Abstact

Following the recent discovery and development of 2-anilino-4-(thiazol-5-yl)pyrimidine cyclin dependent kinase (CDK) inhibitors, a program was initiated to evaluate related ring-constrained analogues, specifically, 2-methyl- and 2-amino-N-aryl-4,5-dihydrothiazolo[4,5-h]quinazolin-8-amines for inhibition of CDKs. Here we report the rational design, synthesis, structure-activity relationships (SARs), and cellular mode-of-action profile of these second generation CDK inhibitors. Many of the analogues from this chemical series inhibit CDKs with very low nanomolar K(i) values. The most potent compound reported in this study inhibits CDK2 with an IC(50) of 0.7 nM ([ATP] = 100 microM). Furthermore, an X-ray crystal structure of 2-methyl-N-(3-(nitro)phenyl)-4,5-dihydrothiazolo[4,5-h]quinazolin-8-amine (11g), a representative from the chemical series in complex with cyclin A-CDK2, is reported, confirming the design rationale and expected binding mode within the CDK2 ATP binding pocket.

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Primary Citation of related structures