ISDA: 2CJM

Deposition Date 2006-04-05

Release Date 2006-04-24

Last Version Date 2024-10-23

Entry Detail

PDB ID:

2CJM

Keywords:

CELL CYCLE

Title:

Mechanism of CDK inhibition by active site phosphorylation: CDK2 Y15p T160p in complex with cyclin A structure

Biological Source:

Source Organism:

HOMO SAPIENS (Taxon ID: 9606)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.30 Å

R-Value Free:

0.26

R-Value Work:

0.20

R-Value Observed:

0.20

Space Group:

P 21 21 21

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Macromolecular Entities

Structures with similar UniProt ID

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

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:CYCLIN A2
Gene (Uniprot):CCNA2
Chain IDs:B, D
Chain Length:258
Number of Molecules:2
Biological Source:HOMO SAPIENS

UniProt ID:P20248 Pfam ID:PF00134, PF02984

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
PTR	A	TYR	O-PHOSPHOTYROSINE
TPO	A	THR	PHOSPHOTHREONINE

Ligand Molecules

ATP

Primary Citation

How Tyrosine 15 Phosphorylation Inhibits the Activity of Cyclin-Dependent Kinase 2-Cyclin A.

Welburn, J.P.I, Tucker, J, Johnson, T, Lindert, L, Morgan, M, Willis, A, Noble, M.E.M, Endicott, J.A.Show

J.Biol.Chem. 282 3173 ? (2007)

PMID: 17095507 DOI: 10.1074/JBC.M609151200

Abstact

Inhibition of cyclin-dependent kinase 1 (CDK1) activity by Tyr-15 phosphorylation directly regulates entry into mitosis and is an important element in the control of the unperturbed cell cycle. Active site phosphorylation of other members of the CDK family that regulate cell cycle progression instates checkpoints that are fundamental to eukaryotic cell cycle regulation. Kinetic and crystallographic analyses of CDK2-cyclin A complexes reveal that this inhibitory mechanism operates through steric blockade of peptide substrate binding and through the creation of an environment that favors a non-productive conformation of the terminal group of ATP. By contrast, tyrosine phosphorylation of CDK2 alters neither its Km for ATP nor its significant intrinsic ATPase activity. Tyr-15-phosphorylated CDK2 retains trace protein phosphorylation activity that should be considered in quantitative and qualitative cell cycle models.

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Protein

Chemical

Disease

Primary Citation of related structures

Abstact

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