Low-density crystal packing of human protein kinase CK2 catalytic subunit in complex with resorufin or other ligands: a tool to study the unique hinge-region plasticity of the enzyme without packing bias.Klopffleisch, K., Issinger, O.G., Niefind, K.
(2012) Acta Crystallogr D Biol Crystallogr 68: 883-892
- PubMed: 22868753
- DOI: 10.1107/S0907444912016587
- Structures With Same Primary Citation
- PubMed Abstract:
- Enzymatic activity with an incomplete catalytic spine - insights from a comparative structural analysis of human CK2alpha and its paralogous isoform CK2alpha'
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- GTP plus water mimic ATP in the active site of protein kinase CK2.
Niefind, K., Putter, M., Guerra, B., Issinger, O.G., Schomburg, D.
(1999) Nat Struct Biol 6: 1100
- Structure of the human protein kinase CK2 catalytic subunit CK2alpha' and interaction thermodynamics with the regulatory subunit CK2beta
Bischoff, N., Olsen, B., Raaf, J., Bretner, M., Issinger, O.G., Niefind, K.
(2011) J Mol Biol 407: 1
- Crystal structure of human protein kinase CK2: insights into basic properties of the CK2 holoenzyme.
Niefind, K., Guerra, B., Ermakowa, I., Issinger, O.G.
(2001) EMBO J 20: 5320
- Crystal structure of a C-terminal deletion mutant of human protein kinase CK2 catalytic subunit.
Ermakova, I., Boldyreff, B., Issinger, O.G., Niefind, K.
(2003) J Mol Biol 330: 925
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Yde, C.W., Ermakova, I., Issinger, O.G., Niefind, K.
(2005) J Mol Biol 347: 399
- Evolved to be active: sulfate ions define substrate recognition sites of CK2alpha and emphasise its exceptional role within the CMGC family of eukaryotic protein kinases.
Niefind, K., Yde, C.W., Ermakova, I., Issinger, O.G.
(2007) J Mol Biol 370: 427
- Protein kinase CK2: from structures to insights
Niefind, K., Raaf, J., Issinger, O.-G.
(2009) Cell Mol Life Sci 66: 1800
- First inactive conformation of CK2alpha, the catalytic subunit of protein kinase CK2
Raaf, J., Issinger, O.-G., Niefind, K.
(2009) J Mol Biol 386: 1212
- The CK2alpha/CK2beta interface of human protein kinase CK2 harbors a binding pocket for small molecules
Raaf, J., Brunstein, E., Issinger, O.-G., Niefind, K.
(2008) Chem Biol 15: 111
- The catalytic subunit of human protein kinase CK2 structurally deviates from its maize homologue in complex with the mucleotide competitive inhibitor emodin
Raaf, J., Klopffleisch, K., Issinger, O.-G., Niefind, K.
(2008) J Mol Biol 377: 1
A low-resolution structure of the catalytic subunit CK2α of human protein kinase CK2 (formerly known as casein kinase 2) in complex with the ATP-competitive inhibitor resorufin is presented. The structure supplements previous human CK2α structures in ...
A low-resolution structure of the catalytic subunit CK2α of human protein kinase CK2 (formerly known as casein kinase 2) in complex with the ATP-competitive inhibitor resorufin is presented. The structure supplements previous human CK2α structures in which the interdomain hinge/helix αD region adopts a closed conformation correlating to a canonically established catalytic spine as is typical for eukaryotic protein kinases. In the corresponding crystal packing the hinge/helix αD region is nearly unaffected by crystal contacts, so that largely unbiased conformational adaptions are possible. This is documented by published human CK2α structures with the same crystal packing but with an open hinge/helix αD region, one of which has been redetermined here with a higher symmetry. An overview of all published human CK2α crystal packings serves as the basis for a discussion of the factors that determine whether the open or the closed hinge/helix αD conformation is adopted. Lyotropic salts in crystallization support the closed conformation, in which the Phe121 side chain complements the hydrophobic catalytic spine ensemble. Consequently, genuine ligand effects on the hinge/helix αD conformation can be best studied under moderate salt conditions. Ligands that stabilize either the open or the closed conformation by hydrogen bonds are known, but a general rule is not yet apparent.
Department für Chemie, Institut für Biochemie, Universität zu Köln, Otto-Fischer-Strasse 12-14, D-50674 Köln, Germany.