2p1q

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==Mechanism of Auxin Perception by the TIR1 ubiquitin ligase==
==Mechanism of Auxin Perception by the TIR1 ubiquitin ligase==
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<StructureSection load='2p1q' size='340' side='right' caption='[[2p1q]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
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<StructureSection load='2p1q' size='340' side='right'caption='[[2p1q]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[2p1q]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Arath Arath]. The February 2009 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Auxin and TIR1 Ubiquitin Ligase'' by David Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2009_2 10.2210/rcsb_pdb/mom_2009_2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2P1Q OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2P1Q FirstGlance]. <br>
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<table><tr><td colspan='2'>[[2p1q]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Arabidopsis_thaliana Arabidopsis thaliana]. The February 2009 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Auxin and TIR1 Ubiquitin Ligase'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2009_2 10.2210/rcsb_pdb/mom_2009_2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2P1Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2P1Q FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=IAC:1H-INDOL-3-YLACETIC+ACID'>IAC</scene>, <scene name='pdbligand=IHP:INOSITOL+HEXAKISPHOSPHATE'>IHP</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.91&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2p1m|2p1m]], [[2p1n|2p1n]], [[2p1o|2p1o]], [[2p1p|2p1p]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IAC:1H-INDOL-3-YLACETIC+ACID'>IAC</scene>, <scene name='pdbligand=IHP:INOSITOL+HEXAKISPHOSPHATE'>IHP</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SKP1A, ASK1, SKP1, UIP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH]), TIR1, FBL1, WEI1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=3702 ARATH])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2p1q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2p1q OCA], [https://pdbe.org/2p1q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2p1q RCSB], [https://www.ebi.ac.uk/pdbsum/2p1q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2p1q ProSAT]</span></td></tr>
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<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=2p1q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2p1q OCA], [http://pdbe.org/2p1q PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2p1q RCSB], [http://www.ebi.ac.uk/pdbsum/2p1q PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2p1q ProSAT]</span></td></tr>
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</table>
</table>
== Function ==
== Function ==
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[[http://www.uniprot.org/uniprot/SKP1A_ARATH SKP1A_ARATH]] Involved in ubiquitination and subsequent proteasomal degradation of target proteins. Together with CUL1, RBX1 and a F-box protein, it forms a SCF E3 ubiquitin ligase complex. The functional specificity of this complex depends of the type of F-box protein. In the SCF complex, it serves as an adapter that links the F-box protein to CUL1. SCF(UFO) is required for vegetative and floral organ development as well as for male gametogenesis. SCF(TIR1) is involved in auxin signaling pathway. SCF(COI1) regulates responses to jasmonates. SCF(EID1) and SCF(AFR) are implicated in phytochrome A light signaling. SCF(ADO1), SCF(ADO2), SCF(ADO3) are related to the circadian clock. SCF(ORE9) seems to be involved in senescence. SCF(EBF1/EBF2) may regulate ethylene signaling. Plays a role during embryogenesis and early postembryonic development, especially during cell elongation and division. Contributes to the correct chromosome segregation during tetrad formation.<ref>PMID:10528262</ref> <ref>PMID:10398681</ref> <ref>PMID:10500191</ref> <ref>PMID:11526079</ref> <ref>PMID:12970487</ref> <ref>PMID:14688296</ref> [[http://www.uniprot.org/uniprot/IAA7_ARATH IAA7_ARATH]] Aux/IAA proteins are short-lived transcriptional factors that function as repressors of early auxin response genes at low auxin concentrations. Repression is thought to result from the interaction with auxin response factors (ARFs), proteins that bind to the auxin-responsive promoter element (AuxRE). Formation of heterodimers with ARF proteins may alter their ability to modulate early auxin response genes expression.<ref>PMID:12036262</ref> [[http://www.uniprot.org/uniprot/TIR1_ARATH TIR1_ARATH]] Auxin receptor that mediates Aux/IAA proteins proteasomal degradation and auxin-regulated transcription. The SCF(TIR1) E3 ubiquitin ligase complex is involved in auxin-mediated signaling pathway that regulate root and hypocotyl growth, lateral root formation, cell elongation, and gravitropism. Appears to allow pericycle cells to overcome G2 arrest prior to lateral root development. Plays a role in ethylene signaling in roots. Confers sensitivity to the virulent bacterial pathogen P.syringae.<ref>PMID:9436980</ref> <ref>PMID:10398681</ref> <ref>PMID:12606727</ref> <ref>PMID:15992545</ref> <ref>PMID:15917797</ref> <ref>PMID:15917798</ref> <ref>PMID:16627744</ref> <ref>PMID:18391211</ref>
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[https://www.uniprot.org/uniprot/IAA7_ARATH IAA7_ARATH] Aux/IAA proteins are short-lived transcriptional factors that function as repressors of early auxin response genes at low auxin concentrations. Repression is thought to result from the interaction with auxin response factors (ARFs), proteins that bind to the auxin-responsive promoter element (AuxRE). Formation of heterodimers with ARF proteins may alter their ability to modulate early auxin response genes expression.<ref>PMID:12036262</ref>
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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==See Also==
==See Also==
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*[[TIR1 ubiquitin ligase|TIR1 ubiquitin ligase]]
 
*[[Transport inhibitor response 1|Transport inhibitor response 1]]
*[[Transport inhibitor response 1|Transport inhibitor response 1]]
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*[[Ubiquitin protein ligase|Ubiquitin protein ligase]]
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*[[Ubiquitin protein ligase 3D structures|Ubiquitin protein ligase 3D structures]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Arath]]
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[[Category: Arabidopsis thaliana]]
[[Category: Auxin and TIR1 Ubiquitin Ligase]]
[[Category: Auxin and TIR1 Ubiquitin Ligase]]
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[[Category: Large Structures]]
[[Category: RCSB PDB Molecule of the Month]]
[[Category: RCSB PDB Molecule of the Month]]
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[[Category: Calderon-Villalobos, L I.A]]
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[[Category: Calderon-Villalobos LIA]]
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[[Category: Estelle, M]]
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[[Category: Estelle M]]
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[[Category: Robinson, C V]]
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[[Category: Robinson CV]]
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[[Category: Sharon, M]]
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[[Category: Sharon M]]
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[[Category: Tan, X]]
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[[Category: Tan X]]
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[[Category: Zheng, N]]
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[[Category: Zheng N]]
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[[Category: F-box]]
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[[Category: Leucine rich repeat]]
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[[Category: Signaling protein]]
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Current revision

Mechanism of Auxin Perception by the TIR1 ubiquitin ligase

PDB ID 2p1q

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