Proteopedia

4a07

Human PDK1 Kinase Domain in Complex with Allosteric Activator PS171 Bound to the PIF-PocketHuman PDK1 Kinase Domain in Complex with Allosteric Activator PS171 Bound to the PIF-Pocket

Structural highlights

4a07 is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.85Å
Ligands:, , , , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PDPK1_HUMAN Serine/threonine kinase which acts as a master kinase, phosphorylating and activating a subgroup of the AGC family of protein kinases. Its targets include: protein kinase B (PKB/AKT1, PKB/AKT2, PKB/AKT3), p70 ribosomal protein S6 kinase (RPS6KB1), p90 ribosomal protein S6 kinase (RPS6KA1, RPS6KA2 and RPS6KA3), cyclic AMP-dependent protein kinase (PRKACA), protein kinase C (PRKCD and PRKCZ), serum and glucocorticoid-inducible kinase (SGK1, SGK2 and SGK3), p21-activated kinase-1 (PAK1), protein kinase PKN (PKN1 and PKN2). Plays a central role in the transduction of signals from insulin by providing the activating phosphorylation to PKB/AKT1, thus propagating the signal to downstream targets controlling cell proliferation and survival, as well as glucose and amino acid uptake and storage. Negatively regulates the TGF-beta-induced signaling by: modulating the association of SMAD3 and SMAD7 with TGF-beta receptor, phosphorylating SMAD2, SMAD3, SMAD4 and SMAD7, preventing the nuclear translocation of SMAD3 and SMAD4 and the translocation of SMAD7 from the nucleus to the cytoplasm in response to TGF-beta. Activates PPARG transcriptional activity and promotes adipocyte differentiation. Activates the NF-kappa-B pathway via phosphorylation of IKKB. The tyrosine phosphorylated form is crucial for the regulation of focal adhesions by angiotensin II. Controls proliferation, survival, and growth of developing pancreatic cells. Participates in the regulation of Ca(2+) entry and Ca(2+)-activated K(+) channels of mast cells. Essential for the motility of vascular endothelial cells (ECs) and is involved in the regulation of their chemotaxis. Plays a critical role in cardiac homeostasis by serving as a dual effector for cell survival and beta-adrenergic response. Plays an important role during thymocyte development by regulating the expression of key nutrient receptors on the surface of pre-T cells and mediating Notch-induced cell growth and proliferative responses. Provides negative feedback inhibition to toll-like receptor-mediated NF-kappa-B activation in macrophages. Isoform 3 is catalytically inactive.[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]

Publication Abstract from PubMed

Protein kinases are key mediators of cellular signaling, and therefore, their activities are tightly controlled. AGC kinases are regulated by phosphorylation and by N- and C-terminal regions. Here, we studied the molecular mechanism of inhibition of atypical PKCzeta and found that the inhibition by the N-terminal region cannot be explained by a simple pseudosubstrate inhibitory mechanism. Notably, we found that the C1 domain allosterically inhibits PKCzeta activity and verified an allosteric communication between the PIF-pocket of atypical PKCs and the binding site of the C1 domain. Finally, we developed low-molecular-weight compounds that bind to the PIF-pocket and allosterically inhibit PKCzeta activity. This work establishes a central role for the PIF-pocket on the regulation of PKCzeta and allows us to envisage development of drugs targeting the PIF-pocket that can either activate or inhibit AGC kinases.

Allosteric Regulation of Protein Kinase PKCzeta by the N-Terminal C1 Domain and Small Compounds to the PIF-Pocket.,Lopez-Garcia LA, Schulze JO, Frohner W, Zhang H, Suss E, Weber N, Navratil J, Amon S, Hindie V, Zeuzem S, Jorgensen TJ, Alzari PM, Neimanis S, Engel M, Biondi RM Chem Biol. 2011 Nov 23;18(11):1463-1473. PMID:22118680[16]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Alessi DR, James SR, Downes CP, Holmes AB, Gaffney PR, Reese CB, Cohen P. Characterization of a 3-phosphoinositide-dependent protein kinase which phosphorylates and activates protein kinase Balpha. Curr Biol. 1997 Apr 1;7(4):261-9. PMID:9094314
  2. ↑ Chou MM, Hou W, Johnson J, Graham LK, Lee MH, Chen CS, Newton AC, Schaffhausen BS, Toker A. Regulation of protein kinase C zeta by PI 3-kinase and PDK-1. Curr Biol. 1998 Sep 24;8(19):1069-77. PMID:9768361
  3. ↑ Cheng X, Ma Y, Moore M, Hemmings BA, Taylor SS. Phosphorylation and activation of cAMP-dependent protein kinase by phosphoinositide-dependent protein kinase. Proc Natl Acad Sci U S A. 1998 Aug 18;95(17):9849-54. PMID:9707564
  4. ↑ Pullen N, Dennis PB, Andjelkovic M, Dufner A, Kozma SC, Hemmings BA, Thomas G. Phosphorylation and activation of p70s6k by PDK1. Science. 1998 Jan 30;279(5351):707-10. PMID:9445476
  5. ↑ Jensen CJ, Buch MB, Krag TO, Hemmings BA, Gammeltoft S, Frodin M. 90-kDa ribosomal S6 kinase is phosphorylated and activated by 3-phosphoinositide-dependent protein kinase-1. J Biol Chem. 1999 Sep 17;274(38):27168-76. PMID:10480933
  6. ↑ King CC, Gardiner EM, Zenke FT, Bohl BP, Newton AC, Hemmings BA, Bokoch GM. p21-activated kinase (PAK1) is phosphorylated and activated by 3-phosphoinositide-dependent kinase-1 (PDK1). J Biol Chem. 2000 Dec 29;275(52):41201-9. PMID:10995762 doi:10.1074/jbc.M006553200
  7. ↑ Scheid MP, Marignani PA, Woodgett JR. Multiple phosphoinositide 3-kinase-dependent steps in activation of protein kinase B. Mol Cell Biol. 2002 Sep;22(17):6247-60. PMID:12167717
  8. ↑ Taniyama Y, Weber DS, Rocic P, Hilenski L, Akers ML, Park J, Hemmings BA, Alexander RW, Griendling KK. Pyk2- and Src-dependent tyrosine phosphorylation of PDK1 regulates focal adhesions. Mol Cell Biol. 2003 Nov;23(22):8019-29. PMID:14585963
  9. ↑ Nilsen T, Slagsvold T, Skjerpen CS, Brech A, Stenmark H, Olsnes S. Peroxisomal targeting as a tool for assaying potein-protein interactions in the living cell: cytokine-independent survival kinase (CISK) binds PDK-1 in vivo in a phosphorylation-dependent manner. J Biol Chem. 2004 Feb 6;279(6):4794-801. Epub 2003 Nov 6. PMID:14604990 doi:10.1074/jbc.M309653200
  10. ↑ Balendran A, Casamayor A, Deak M, Paterson A, Gaffney P, Currie R, Downes CP, Alessi DR. PDK1 acquires PDK2 activity in the presence of a synthetic peptide derived from the carboxyl terminus of PRK2. Curr Biol. 1999 Apr 22;9(8):393-404. PMID:10226025
  11. ↑ Tanaka H, Fujita N, Tsuruo T. 3-Phosphoinositide-dependent protein kinase-1-mediated IkappaB kinase beta (IkkB) phosphorylation activates NF-kappaB signaling. J Biol Chem. 2005 Dec 9;280(49):40965-73. Epub 2005 Oct 5. PMID:16207722 doi:10.1074/jbc.M506235200
  12. ↑ Seong HA, Jung H, Choi HS, Kim KT, Ha H. Regulation of transforming growth factor-beta signaling and PDK1 kinase activity by physical interaction between PDK1 and serine-threonine kinase receptor-associated protein. J Biol Chem. 2005 Dec 30;280(52):42897-908. Epub 2005 Oct 26. PMID:16251192 doi:10.1074/jbc.M507539200
  13. ↑ Seong HA, Jung H, Kim KT, Ha H. 3-Phosphoinositide-dependent PDK1 negatively regulates transforming growth factor-beta-induced signaling in a kinase-dependent manner through physical interaction with Smad proteins. J Biol Chem. 2007 Apr 20;282(16):12272-89. Epub 2007 Feb 27. PMID:17327236 doi:10.1074/jbc.M609279200
  14. ↑ Primo L, di Blasio L, Roca C, Droetto S, Piva R, Schaffhausen B, Bussolino F. Essential role of PDK1 in regulating endothelial cell migration. J Cell Biol. 2007 Mar 26;176(7):1035-47. Epub 2007 Mar 19. PMID:17371830 doi:10.1083/jcb.200607053
  15. ↑ Lim WG, Chen X, Liu JP, Tan BJ, Zhou S, Smith A, Lees N, Hou L, Gu F, Yu XY, Du Y, Smith D, Verma C, Liu K, Duan W. The C-terminus of PRK2/PKNgamma is required for optimal activation by RhoA in a GTP-dependent manner. Arch Biochem Biophys. 2008 Nov 15;479(2):170-8. doi: 10.1016/j.abb.2008.09.008., Epub 2008 Sep 22. PMID:18835241 doi:10.1016/j.abb.2008.09.008
  16. ↑ Lopez-Garcia LA, Schulze JO, Frohner W, Zhang H, Suss E, Weber N, Navratil J, Amon S, Hindie V, Zeuzem S, Jorgensen TJ, Alzari PM, Neimanis S, Engel M, Biondi RM. Allosteric Regulation of Protein Kinase PKCzeta by the N-Terminal C1 Domain and Small Compounds to the PIF-Pocket. Chem Biol. 2011 Nov 23;18(11):1463-1473. PMID:22118680 doi:10.1016/j.chembiol.2011.08.010

4a07, resolution 1.85Å

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