This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

5hfc

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:03, 20 May 2020

The third PDZ domain from the synaptic protein PSD-95 (H372A mutant) in complex with a mutant C-terminal peptide derived from CRIPT (T-2F)

Structural highlights

5hfc is a 2 chain structure with sequence from Buffalo rat. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1be9, 5hdy, 5heb, 5hed, 5het, 5hey, 5hf1, 5hf4, 5hfb, 5hfd, 5hfe, 5hff
Gene:	Dlg4, Dlgh4, Psd95 (Buffalo rat)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[DLG4_RAT] Interacts with the cytoplasmic tail of NMDA receptor subunits and shaker-type potassium channels. Required for synaptic plasticity associated with NMDA receptor signaling. Overexpression or depletion of DLG4 changes the ratio of excitatory to inhibitory synapses in hippocampal neurons. May reduce the amplitude of ASIC3 acid-evoked currents by retaining the channel intracellularly. May regulate the intracellular trafficking of ADR1B.^[1] ^[2] [CRIPT_RAT] Involved in the cytoskeletal anchoring of DLG4 in excitatory synapses.^[3] ^[4]

Publication Abstract from PubMed

Proteins display the capacity for adaptation to new functions, a property critical for evolvability. But what structural principles underlie the capacity for adaptation? Here, we show that adaptation to a physiologically distinct class of ligand specificity in a PSD95, DLG1, ZO-1 (PDZ) domain preferentially occurs through class-bridging intermediate mutations located distant from the ligand-binding site. These mutations provide a functional link between ligand classes and demonstrate the principle of "conditional neutrality" in mediating evolutionary adaptation. Structures show that class-bridging mutations work allosterically to open up conformational plasticity at the active site, permitting novel functions while retaining existing function. More generally, the class-bridging phenotype arises from mutations in an evolutionarily conserved network of coevolving amino acids in the PDZ family (the sector) that connects the active site to distant surface sites. These findings introduce the concept that allostery in proteins could have its origins not in protein function but in the capacity to adapt.

Origins of Allostery and Evolvability in Proteins: A Case Study.,Raman AS, White KI, Ranganathan R Cell. 2016 Jul 14;166(2):468-80. doi: 10.1016/j.cell.2016.05.047. Epub 2016 Jun, 16. PMID:27321669^[5]

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

References

↑ Hruska-Hageman AM, Benson CJ, Leonard AS, Price MP, Welsh MJ. PSD-95 and Lin-7b interact with acid-sensing ion channel-3 and have opposite effects on H+- gated current. J Biol Chem. 2004 Nov 5;279(45):46962-8. Epub 2004 Aug 17. PMID:15317815 doi:10.1074/jbc.M405874200
↑ Prange O, Wong TP, Gerrow K, Wang YT, El-Husseini A. A balance between excitatory and inhibitory synapses is controlled by PSD-95 and neuroligin. Proc Natl Acad Sci U S A. 2004 Sep 21;101(38):13915-20. Epub 2004 Sep 9. PMID:15358863 doi:10.1073/pnas.0405939101
↑ Passafaro M, Sala C, Niethammer M, Sheng M. Microtubule binding by CRIPT and its potential role in the synaptic clustering of PSD-95. Nat Neurosci. 1999 Dec;2(12):1063-9. PMID:10570482 doi:http://dx.doi.org/10.1038/15990
↑ Niethammer M, Valtschanoff JG, Kapoor TM, Allison DW, Weinberg RJ, Craig AM, Sheng M. CRIPT, a novel postsynaptic protein that binds to the third PDZ domain of PSD-95/SAP90. Neuron. 1998 Apr;20(4):693-707. PMID:9581762
↑ Raman AS, White KI, Ranganathan R. Origins of Allostery and Evolvability in Proteins: A Case Study. Cell. 2016 Jul 14;166(2):468-80. doi: 10.1016/j.cell.2016.05.047. Epub 2016 Jun, 16. PMID:27321669 doi:http://dx.doi.org/10.1016/j.cell.2016.05.047

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5hfc"

@@ Line 1: / Line 1: @@
 ==The third PDZ domain from the synaptic protein PSD-95 (H372A mutant) in complex with a mutant C-terminal peptide derived from CRIPT (T-2F)==
-<StructureSection load='5hfc' size='340' side='right' caption='[[5hfc]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
+<StructureSection load='5hfc' size='340' side='right'caption='[[5hfc]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5hfc]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5HFC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5HFC FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5hfc]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5HFC OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5HFC FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1be9|1be9]], [[5hdy|5hdy]], [[5heb|5heb]], [[5hed|5hed]], [[5het|5het]], [[5hey|5hey]], [[5hf1|5hf1]], [[5hf4|5hf4]], [[5hfb|5hfb]], [[5hfd|5hfd]], [[5hfe|5hfe]], [[5hff|5hff]]</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=5hfc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5hfc OCA], [http://pdbe.org/5hfc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5hfc RCSB], [http://www.ebi.ac.uk/pdbsum/5hfc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5hfc ProSAT]</span></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Dlg4, Dlgh4, Psd95 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10116 Buffalo rat])</td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5hfc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5hfc OCA], [http://pdbe.org/5hfc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5hfc RCSB], [http://www.ebi.ac.uk/pdbsum/5hfc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5hfc ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 19: @@
 </div>
 <div class="pdbe-citations 5hfc" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Glycoprotein GP 3D structures|Glycoprotein GP 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Buffalo rat]]
+[[Category: Large Structures]]
 [[Category: Raman, A S]]
 [[Category: Ranganathan, R]]

5hfc

From Proteopedia

Revision as of 07:03, 20 May 2020

The third PDZ domain from the synaptic protein PSD-95 (H372A mutant) in complex with a mutant C-terminal peptide derived from CRIPT (T-2F)

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox