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| | ==GIP/Glutaminase L peptide complex== | | ==GIP/Glutaminase L peptide complex== |
| - | <StructureSection load='2l4t' size='340' side='right' caption='[[2l4t]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | + | <StructureSection load='2l4t' size='340' side='right'caption='[[2l4t]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2l4t]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2L4T OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2L4T FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2l4t]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2L4T OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2L4T FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2l4s|2l4s]]</td></tr> | + | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2l4s|2l4s]]</div></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TAX1BP3, TIP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TAX1BP3, TIP1 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=2l4t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2l4t OCA], [http://pdbe.org/2l4t PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2l4t RCSB], [http://www.ebi.ac.uk/pdbsum/2l4t PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2l4t ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2l4t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2l4t OCA], [https://pdbe.org/2l4t PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2l4t RCSB], [https://www.ebi.ac.uk/pdbsum/2l4t PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2l4t ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/TX1B3_HUMAN TX1B3_HUMAN]] May regulate a number of protein-protein interactions by competing for PDZ domain binding sites. Binds CTNNB1 and may thereby act as an inhibitor of the Wnt signaling pathway. Competes with LIN7A for KCNJ4 binding, and thereby promotes KCNJ4 internalization. May play a role in the Rho signaling pathway. May play a role in activation of CDC42 by the viral protein HPV16 E6.<ref>PMID:10940294</ref> <ref>PMID:16855024</ref> <ref>PMID:21139582</ref> | + | [[https://www.uniprot.org/uniprot/TX1B3_HUMAN TX1B3_HUMAN]] May regulate a number of protein-protein interactions by competing for PDZ domain binding sites. Binds CTNNB1 and may thereby act as an inhibitor of the Wnt signaling pathway. Competes with LIN7A for KCNJ4 binding, and thereby promotes KCNJ4 internalization. May play a role in the Rho signaling pathway. May play a role in activation of CDC42 by the viral protein HPV16 E6.<ref>PMID:10940294</ref> <ref>PMID:16855024</ref> <ref>PMID:21139582</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Human]] | | [[Category: Human]] |
| | + | [[Category: Large Structures]] |
| | [[Category: Banerjee, M]] | | [[Category: Banerjee, M]] |
| | [[Category: Bhaskaran, R]] | | [[Category: Bhaskaran, R]] |
| Structural highlights
Function
[TX1B3_HUMAN] May regulate a number of protein-protein interactions by competing for PDZ domain binding sites. Binds CTNNB1 and may thereby act as an inhibitor of the Wnt signaling pathway. Competes with LIN7A for KCNJ4 binding, and thereby promotes KCNJ4 internalization. May play a role in the Rho signaling pathway. May play a role in activation of CDC42 by the viral protein HPV16 E6.[1] [2] [3]
Publication Abstract from PubMed
Glutaminase Interacting Protein (GIP) is composed of a single PDZ domain that interacts with a growing list of partner proteins, including Glutaminase L, that are involved in a number of cell signaling and cancer pathways. Therefore, GIP makes a good target for structure-based drug design. Here we report the solution structures of both free GIP and GIP bound to the C-terminal peptide analog of Glutaminase L. This is the first reported NMR structure of GIP in a complex with one of its binding partners. Our analysis of both free GIP and GIP complexed with the Glutaminase L peptide provides important insights into how a promiscuous binding domain can have affinity for multiple binding partners. Through a detailed chemical shift perturbation analysis and backbone dynamics studies, we demonstrate here that the binding of the Glutaminase L peptide to GIP is an allosteric event. Taken together, the insights reported here lay the groundwork for the future development of a specific inhibitor for GIP.
Promiscuous Binding at the Crossroads of Numerous Cancer Pathways: Insight from the Binding of GIP with Glutaminase L.,Zoetewey DL, Ovee M, Banerjee M, Bhaskaran R, Mohanty S Biochemistry. 2011 Mar 18. PMID:21417405[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Reynaud C, Fabre S, Jalinot P. The PDZ protein TIP-1 interacts with the Rho effector rhotekin and is involved in Rho signaling to the serum response element. J Biol Chem. 2000 Oct 27;275(43):33962-8. PMID:10940294 doi:10.1074/jbc.M000465200
- ↑ Alewine C, Olsen O, Wade JB, Welling PA. TIP-1 has PDZ scaffold antagonist activity. Mol Biol Cell. 2006 Oct;17(10):4200-11. Epub 2006 Jul 19. PMID:16855024 doi:10.1091/mbc.E06-02-0129
- ↑ Oliver AW, He X, Borthwick K, Donne AJ, Hampson L, Hampson IN. The HPV16 E6 binding protein Tip-1 interacts with ARHGEF16, which activates Cdc42. Br J Cancer. 2011 Jan 18;104(2):324-31. doi: 10.1038/sj.bjc.6606026. Epub 2010, Dec 7. PMID:21139582 doi:10.1038/sj.bjc.6606026
- ↑ Zoetewey DL, Ovee M, Banerjee M, Bhaskaran R, Mohanty S. Promiscuous Binding at the Crossroads of Numerous Cancer Pathways: Insight from the Binding of GIP with Glutaminase L. Biochemistry. 2011 Mar 18. PMID:21417405 doi:10.1021/bi102055y
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