1jst
From Proteopedia
| Line 4: | Line 4: | ||
|PDB= 1jst |SIZE=350|CAPTION= <scene name='initialview01'>1jst</scene>, resolution 2.6Å | |PDB= 1jst |SIZE=350|CAPTION= <scene name='initialview01'>1jst</scene>, resolution 2.6Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene> and <scene name='pdbligand=ATP:ADENOSINE-5 | + | |LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene> and <scene name='pdbligand=ATP:ADENOSINE-5'-TRIPHOSPHATE'>ATP</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= | |GENE= | ||
| Line 32: | Line 32: | ||
[[Category: phosphorylation]] | [[Category: phosphorylation]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 23 12:23:36 2008'' |
Revision as of 10:23, 23 March 2008
| |||||||
| , resolution 2.6Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
PHOSPHORYLATED CYCLIN-DEPENDENT KINASE-2 BOUND TO CYCLIN A
Overview
Cyclin-dependent kinase (CDK)-cyclin complexes require phosphorylation on the CDK subunit for full activation of their Ser/Thr protein kinase activity. The crystal structure of the phosphorylated CDK2-CyclinA-ATP gamma S complex has been determined at 2.6 A resolution. The phosphate group, which is on the regulatory T-loop of CDK2, is mostly buried, its charge being neutralized by three Arg side chains. The arginines help extend the influence of the phosphate group through a network of hydrogen bonds to both CDK2 and cyclinA. Comparison with the unphosphorylated CDK2-CyclinA complex shows that the T-loop moves by as much as 7 A, and this affects the putative substrate binding site as well as resulting in additional CDK2-CyclinA contacts. The phosphate group thus acts as a major organizing centre in the CDK2-CyclinA complex.
About this Structure
1JST is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structural basis of cyclin-dependent kinase activation by phosphorylation., Russo AA, Jeffrey PD, Pavletich NP, Nat Struct Biol. 1996 Aug;3(8):696-700. PMID:8756328
Page seeded by OCA on Sun Mar 23 12:23:36 2008
