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==beta PIX-SH3 complexed with an atypical peptide from alpha-PAK==
==beta PIX-SH3 complexed with an atypical peptide from alpha-PAK==
<StructureSection load='1zsg' size='340' side='right' caption='[[1zsg]], [[NMR_Ensembles_of_Models | 30 NMR models]]' scene=''>
<StructureSection load='1zsg' size='340' side='right' caption='[[1zsg]], [[NMR_Ensembles_of_Models | 30 NMR models]]' scene=''>
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</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ARHGEF7, COOL1, KIAA0142, P85SPR, PAK3BP, PIXB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ARHGEF7, COOL1, KIAA0142, P85SPR, PAK3BP, PIXB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Transferase Transferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1, 2.7.11.8, 2.7.11.9, 2.7.11.10, 2.7.11.11, 2.7.11.12, 2.7.11.13, 2.7.11.21, 2.7.11.22, 2.7.11.24, 2.7.11.25, 2.7.11.30 and 2.7.12.1 2.7.11.1, 2.7.11.8, 2.7.11.9, 2.7.11.10, 2.7.11.11, 2.7.11.12, 2.7.11.13, 2.7.11.21, 2.7.11.22, 2.7.11.24, 2.7.11.25, 2.7.11.30 and 2.7.12.1] </span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Transferase Transferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.11.1, 2.7.11.8, 2.7.11.9, 2.7.11.10, 2.7.11.11, 2.7.11.12, 2.7.11.13, 2.7.11.21, 2.7.11.22, 2.7.11.24, 2.7.11.25, 2.7.11.30 and 2.7.12.1 2.7.11.1, 2.7.11.8, 2.7.11.9, 2.7.11.10, 2.7.11.11, 2.7.11.12, 2.7.11.13, 2.7.11.21, 2.7.11.22, 2.7.11.24, 2.7.11.25, 2.7.11.30 and 2.7.12.1] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1zsg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zsg OCA], [http://pdbe.org/1zsg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1zsg RCSB], [http://www.ebi.ac.uk/pdbsum/1zsg PDBsum]</span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1zsg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zsg OCA], [http://pdbe.org/1zsg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1zsg RCSB], [http://www.ebi.ac.uk/pdbsum/1zsg PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1zsg ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zs/1zsg_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zs/1zsg_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
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</div>
</div>
<div class="pdbe-citations 1zsg" style="background-color:#fffaf0;"></div>
<div class="pdbe-citations 1zsg" style="background-color:#fffaf0;"></div>
==See Also==
*[[Rho guanine nucleotide exchange factor|Rho guanine nucleotide exchange factor]]
== References ==
== References ==
<references/>
<references/>

Revision as of 12:16, 2 May 2018

beta PIX-SH3 complexed with an atypical peptide from alpha-PAKbeta PIX-SH3 complexed with an atypical peptide from alpha-PAK

Structural highlights

1zsg is a 2 chain structure with sequence from Human. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:ARHGEF7, COOL1, KIAA0142, P85SPR, PAK3BP, PIXB (HUMAN)
Activity:Transferase, with EC number 2.7.11.8, 2.7.11.9, 2.7.11.10, 2.7.11.11, 2.7.11.12, 2.7.11.13, 2.7.11.21, 2.7.11.22, 2.7.11.24, 2.7.11.25, 2.7.11.30 and 2.7.12.1 2.7.11.1, 2.7.11.8, 2.7.11.9, 2.7.11.10, 2.7.11.11, 2.7.11.12, 2.7.11.13, 2.7.11.21, 2.7.11.22, 2.7.11.24, 2.7.11.25, 2.7.11.30 and 2.7.12.1
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ARHG7_HUMAN] Acts as a RAC1 guanine nucleotide exchange factor (GEF) and can induce membrane ruffling. Functions in cell migration, attachment and cell spreading. Promotes targeting of RAC1 to focal adhesions (By similarity). May function as a positive regulator of apoptosis. Downstream of NMDA receptors and CaMKK-CaMK1 signaling cascade, promotes the formation of spines and synapses in hippocampal neurons.[1] [2] [3] [PAK1_HUMAN] Protein kinase involved in intracellular signaling pathways downstream of integrins and receptor-type kinases that plays an important role in cytoskeleton dynamics, in cell adhesion, migration, proliferation, apoptosis, mitosis, and in vesicle-mediated transport processes. Can directly phosphorylate BAD and protects cells against apoptosis. Activated by interaction with CDC42 and RAC1. Functions as GTPase effector that links the Rho-related GTPases CDC42 and RAC1 to the JNK MAP kinase pathway. Phosphorylates and activates MAP2K1, and thereby mediates activation of downstream MAP kinases. Involved in the reorganization of the actin cytoskeleton, actin stress fibers and of focal adhesion complexes. Phosphorylates the tubulin chaperone TBCB and thereby plays a role in the regulation of microtubule biogenesis and organization of the tubulin cytoskeleton. Plays a role in the regulation of insulin secretion in response to elevated glucose levels. Part of a ternary complex that contains PAK1, DVL1 and MUSK that is important for MUSK-dependent regulation of AChR clustering during the formation of the neuromuscular junction (NMJ). Activity is inhibited in cells undergoing apoptosis, potentially due to binding of CDC2L1 and CDC2L2. Phosphorylates MYL9/MLC2. Phosphorylates RAF1 at 'Ser-338' and 'Ser-339' resulting in: activation of RAF1, stimulation of RAF1 translocation to mitochondria, phosphorylation of BAD by RAF1, and RAF1 binding to BCL2.[4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The PAK Ser/Thr kinases are important downstream effectors of the Rho family GTPases Cdc42 and Rac, partly mediating the role of these G proteins in cell proliferation and cytoskeletal rearrangements. As well as small G proteins, PAK interacts with the Cdc42/Rac exchange factor beta-PIX via the PIX SH3 domain and a nontypical Pro-rich region in PAK. This interaction is thought to affect the localization of PAK, as well as increased GTP/GDP exchange of Rac and Cdc42. We have determined the structure of the PIX-SH3/PAK peptide complex and shown that it differs from typical Src-like SH3/peptide complexes. The peptide makes contacts through the Pro-rich sequence in a similar way to standard SH3/peptide complexes, even though the Pro residue positions are not conserved. In addition, there are interactions with a Pro and Lys in the PAK, which are C-terminal to the conserved Arg found in all SH3-binding sequences. These contact a fourth binding pocket on the SH3 domain. We have measured the affinity of PIX-SH3 for the PAK peptide and found that it is of intermediate affinity. When PAK is activated, Ser-199 in the PIX-binding site is phosphorylated. This phosphorylation is sufficient to reduce the affinity for PIX 6-fold.

Structural analysis of the SH3 domain of beta-PIX and its interaction with alpha-p21 activated kinase (PAK).,Mott HR, Nietlispach D, Evetts KA, Owen D Biochemistry. 2005 Aug 23;44(33):10977-83. PMID:16101281[19]

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

References

  1. ↑ Zhan L, Rosenberg A, Bergami KC, Yu M, Xuan Z, Jaffe AB, Allred C, Muthuswamy SK. Deregulation of scribble promotes mammary tumorigenesis and reveals a role for cell polarity in carcinoma. Cell. 2008 Nov 28;135(5):865-78. doi: 10.1016/j.cell.2008.09.045. PMID:19041750 doi:10.1016/j.cell.2008.09.045
  2. ↑ Nola S, Sebbagh M, Marchetto S, Osmani N, Nourry C, Audebert S, Navarro C, Rachel R, Montcouquiol M, Sans N, Etienne-Manneville S, Borg JP, Santoni MJ. Scrib regulates PAK activity during the cell migration process. Hum Mol Genet. 2008 Nov 15;17(22):3552-65. doi: 10.1093/hmg/ddn248. Epub 2008 Aug, 20. PMID:18716323 doi:10.1093/hmg/ddn248
  3. ↑ Saneyoshi T, Wayman G, Fortin D, Davare M, Hoshi N, Nozaki N, Natsume T, Soderling TR. Activity-dependent synaptogenesis: regulation by a CaM-kinase kinase/CaM-kinase I/betaPIX signaling complex. Neuron. 2008 Jan 10;57(1):94-107. doi: 10.1016/j.neuron.2007.11.016. PMID:18184567 doi:http://dx.doi.org/10.1016/j.neuron.2007.11.016
  4. ↑ Brown JL, Stowers L, Baer M, Trejo J, Coughlin S, Chant J. Human Ste20 homologue hPAK1 links GTPases to the JNK MAP kinase pathway. Curr Biol. 1996 May 1;6(5):598-605. PMID:8805275
  5. ↑ Sells MA, Knaus UG, Bagrodia S, Ambrose DM, Bokoch GM, Chernoff J. Human p21-activated kinase (Pak1) regulates actin organization in mammalian cells. Curr Biol. 1997 Mar 1;7(3):202-10. PMID:9395435
  6. ↑ Manser E, Huang HY, Loo TH, Chen XQ, Dong JM, Leung T, Lim L. Expression of constitutively active alpha-PAK reveals effects of the kinase on actin and focal complexes. Mol Cell Biol. 1997 Mar;17(3):1129-43. PMID:9032240
  7. ↑ Zhao ZS, Manser E, Chen XQ, Chong C, Leung T, Lim L. A conserved negative regulatory region in alphaPAK: inhibition of PAK kinases reveals their morphological roles downstream of Cdc42 and Rac1. Mol Cell Biol. 1998 Apr;18(4):2153-63. PMID:9528787
  8. ↑ Zenke FT, King CC, Bohl BP, Bokoch GM. Identification of a central phosphorylation site in p21-activated kinase regulating autoinhibition and kinase activity. J Biol Chem. 1999 Nov 12;274(46):32565-73. PMID:10551809
  9. ↑ Zang M, Hayne C, Luo Z. Interaction between active Pak1 and Raf-1 is necessary for phosphorylation and activation of Raf-1. J Biol Chem. 2002 Feb 8;277(6):4395-405. Epub 2001 Nov 30. PMID:11733498 doi:10.1074/jbc.M110000200
  10. ↑ Chen S, Yin X, Zhu X, Yan J, Ji S, Chen C, Cai M, Zhang S, Zong H, Hu Y, Yuan Z, Shen Z, Gu J. The C-terminal kinase domain of the p34cdc2-related PITSLRE protein kinase (p110C) associates with p21-activated kinase 1 and inhibits its activity during anoikis. J Biol Chem. 2003 May 30;278(22):20029-36. Epub 2003 Mar 6. PMID:12624090 doi:10.1074/jbc.M300818200
  11. ↑ Slack-Davis JK, Eblen ST, Zecevic M, Boerner SA, Tarcsafalvi A, Diaz HB, Marshall MS, Weber MJ, Parsons JT, Catling AD. PAK1 phosphorylation of MEK1 regulates fibronectin-stimulated MAPK activation. J Cell Biol. 2003 Jul 21;162(2):281-91. PMID:12876277 doi:10.1083/jcb.200212141
  12. ↑ Zhou GL, Zhuo Y, King CC, Fryer BH, Bokoch GM, Field J. Akt phosphorylation of serine 21 on Pak1 modulates Nck binding and cell migration. Mol Cell Biol. 2003 Nov;23(22):8058-69. PMID:14585966
  13. ↑ Zhou H, Kramer RH. Integrin engagement differentially modulates epithelial cell motility by RhoA/ROCK and PAK1. J Biol Chem. 2005 Mar 18;280(11):10624-35. Epub 2004 Dec 17. PMID:15611088 doi:10.1074/jbc.M411900200
  14. ↑ Vadlamudi RK, Barnes CJ, Rayala S, Li F, Balasenthil S, Marcus S, Goodson HV, Sahin AA, Kumar R. p21-activated kinase 1 regulates microtubule dynamics by phosphorylating tubulin cofactor B. Mol Cell Biol. 2005 May;25(9):3726-36. PMID:15831477 doi:25/9/3726
  15. ↑ Talukder AH, Meng Q, Kumar R. CRIPak, a novel endogenous Pak1 inhibitor. Oncogene. 2006 Mar 2;25(9):1311-9. PMID:16278681 doi:1209172
  16. ↑ Rider L, Shatrova A, Feener EP, Webb L, Diakonova M. JAK2 tyrosine kinase phosphorylates PAK1 and regulates PAK1 activity and functions. J Biol Chem. 2007 Oct 19;282(42):30985-96. Epub 2007 Aug 28. PMID:17726028 doi:10.1074/jbc.M701794200
  17. ↑ Mayhew MW, Jeffery ED, Sherman NE, Nelson K, Polefrone JM, Pratt SJ, Shabanowitz J, Parsons JT, Fox JW, Hunt DF, Horwitz AF. Identification of phosphorylation sites in betaPIX and PAK1. J Cell Sci. 2007 Nov 15;120(Pt 22):3911-8. PMID:17989089 doi:10.1242/jcs.008177
  18. ↑ Nie J, Sun C, Faruque O, Ye G, Li J, Liang Q, Chang Z, Yang W, Han X, Shi Y. Synapses of amphids defective (SAD-A) kinase promotes glucose-stimulated insulin secretion through activation of p21-activated kinase (PAK1) in pancreatic beta-Cells. J Biol Chem. 2012 Jul 27;287(31):26435-44. doi: 10.1074/jbc.M112.378372. Epub, 2012 Jun 5. PMID:22669945 doi:10.1074/jbc.M112.378372
  19. ↑ Mott HR, Nietlispach D, Evetts KA, Owen D. Structural analysis of the SH3 domain of beta-PIX and its interaction with alpha-p21 activated kinase (PAK). Biochemistry. 2005 Aug 23;44(33):10977-83. PMID:16101281 doi:10.1021/bi050374a
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