2zfd

From Proteopedia

(Difference between revisions)

Revision as of 06:57, 18 October 2018

The crystal structure of plant specific calcium binding protein AtCBL2 in complex with the regulatory domain of AtCIPK14

Structural highlights

2zfd is a 2 chain structure with sequence from Arath. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	1uhn
Gene:	CBL2 (ARATH), CIPK14 (ARATH)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[CNBL2_ARATH] Acts as a calcium sensor. CBL proteins interact with CIPK serine-threonine protein kinases. Binding of a CBL protein to the regulatory NAF domain of a CIPK protein lead to the activation of the kinase in a calcium-dependent manner. Binds four calcium ions per subunit. Mediates the activation of AKT1 by CIPK proteins (CIPK6, CIPK16, and CIPK23) in response to low potassium conditions and in the context of stomatal movement. Mediates the inactivation of the proton pump AHA2 by CIPK11. Probably involved in regulating signaling responses to abscisic acid.^[1] ^[2] ^[3] [CIPKE_ARATH] CIPK serine-threonine protein kinases interact with CBL proteins. Binding of a CBL protein to the regulatory NAF domain of CIPK protein lead to the activation of the kinase in a calcium-dependent manner (By similarity).

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

Calcium signals mediate a multitude of plant responses to external stimuli. Calcineurin B-like (CBL) proteins and their target kinases, CBL-interacting protein kinases (CIPKs), represent important relays in plant calcium signaling. CBL interacts with CIPK through a conserved motif (NAF/FISL motif) within the C-terminal regulatory domain. To better understand the functional role of the CBL-CIPK system, we determined the crystal structure of AtCBL2 in complex with the regulatory domain of AtCIPK14 at 1.2 A resolution. The NAF/FISL motif is inserted into a hydrophobic crevice within AtCBL2, accompanied by a large displacement of the helices and loop on the opposite side of the NAF/FISL motif from the C-terminal region, which shields the hydrophobic crevice in free form. Ca(2+) are coordinated within four EF hands in AtCBL2 in bound form. This calcium coordination pattern differs from that in the structure of the SOS3-SOS2 complex previously reported. Structural comparison of the two structures shows that the recognition of CBL by CIPK is performed in a similar manner, but inherent interactions confer binding affinity and specificity.

The crystal structure of plant-specific calcium-binding protein AtCBL2 in complex with the regulatory domain of AtCIPK14.,Akaboshi M, Hashimoto H, Ishida H, Saijo S, Koizumi N, Sato M, Shimizu T J Mol Biol. 2008 Mar 14;377(1):246-57. Epub 2008 Jan 11. PMID:18237745^[4]

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

References

↑ Fuglsang AT, Guo Y, Cuin TA, Qiu Q, Song C, Kristiansen KA, Bych K, Schulz A, Shabala S, Schumaker KS, Palmgren MG, Zhu JK. Arabidopsis protein kinase PKS5 inhibits the plasma membrane H+ -ATPase by preventing interaction with 14-3-3 protein. Plant Cell. 2007 May;19(5):1617-34. Epub 2007 May 4. PMID:17483306 doi:http://dx.doi.org/10.1105/tpc.105.035626
↑ Lee SC, Lan WZ, Kim BG, Li L, Cheong YH, Pandey GK, Lu G, Buchanan BB, Luan S. A protein phosphorylation/dephosphorylation network regulates a plant potassium channel. Proc Natl Acad Sci U S A. 2007 Oct 2;104(40):15959-64. Epub 2007 Sep 26. PMID:17898163 doi:http://dx.doi.org/0707912104
↑ Batistic O, Rehers M, Akerman A, Schlucking K, Steinhorst L, Yalovsky S, Kudla J. S-acylation-dependent association of the calcium sensor CBL2 with the vacuolar membrane is essential for proper abscisic acid responses. Cell Res. 2012 Jul;22(7):1155-68. doi: 10.1038/cr.2012.71. Epub 2012 May 1. PMID:22547024 doi:http://dx.doi.org/10.1038/cr.2012.71
↑ Akaboshi M, Hashimoto H, Ishida H, Saijo S, Koizumi N, Sato M, Shimizu T. The crystal structure of plant-specific calcium-binding protein AtCBL2 in complex with the regulatory domain of AtCIPK14. J Mol Biol. 2008 Mar 14;377(1):246-57. Epub 2008 Jan 11. PMID:18237745 doi:http://dx.doi.org/10.1016/j.jmb.2008.01.006

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2zfd"

@@ Line 1: / Line 1: @@
 ==The crystal structure of plant specific calcium binding protein AtCBL2 in complex with the regulatory domain of AtCIPK14==
 <StructureSection load='2zfd' size='340' side='right' caption='[[2zfd]], [[Resolution|resolution]] 1.20&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1uhn|1uhn]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CBL2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH]), CIPK14 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH])</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=2zfd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zfd OCA], [http://pdbe.org/2zfd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zfd RCSB], [http://www.ebi.ac.uk/pdbsum/2zfd 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=2zfd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2zfd OCA], [http://pdbe.org/2zfd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2zfd RCSB], [http://www.ebi.ac.uk/pdbsum/2zfd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2zfd ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 14: / Line 15: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zf/2zfd_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/zf/2zfd_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>

2zfd

From Proteopedia

Revision as of 06:57, 18 October 2018

The crystal structure of plant specific calcium binding protein AtCBL2 in complex with the regulatory domain of AtCIPK14

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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