2r1b: Difference between revisions
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==Crystal Structure of rat neurexin 1beta with a splice insert at SS#4== | ==Crystal Structure of rat neurexin 1beta with a splice insert at SS#4== | ||
<StructureSection load='2r1b' size='340' side='right' caption='[[2r1b]], [[Resolution|resolution]] 1.72Å' scene=''> | <StructureSection load='2r1b' size='340' side='right'caption='[[2r1b]], [[Resolution|resolution]] 1.72Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2r1b]] 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=2R1B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2R1B FirstGlance]. <br> | <table><tr><td colspan='2'>[[2r1b]] 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=2R1B OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2R1B FirstGlance]. <br> | ||
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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/r1/2r1b_consurf.spt"</scriptWhenChecked> | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/r1/2r1b_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 2r1b" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 2r1b" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Neurexin|Neurexin]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Buffalo rat]] | [[Category: Buffalo rat]] | ||
[[Category: Large Structures]] | |||
[[Category: Rudenko, G]] | [[Category: Rudenko, G]] | ||
[[Category: Beta-sandwich]] | [[Category: Beta-sandwich]] | ||
[[Category: Cell adhesion]] | [[Category: Cell adhesion]] | ||
[[Category: Splicing]] | [[Category: Splicing]] | ||
Revision as of 10:32, 24 July 2019
Crystal Structure of rat neurexin 1beta with a splice insert at SS#4Crystal Structure of rat neurexin 1beta with a splice insert at SS#4
Structural highlights
Function[NRX1B_RAT] Neuronal cell surface protein that may be involved in cell recognition and cell adhesion by forming intracellular junctions through binding to neuroligins. May play a role in formation or maintenance of synaptic junctions. May mediate intracellular signaling. May play a role in angiogenesis (By similarity).[1] 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 PubMedNeurexins and neuroligins play an essential role in synapse function, and their alterations are linked to autistic spectrum disorder. Interactions between neurexins and neuroligins regulate inhibitory and excitatory synaptogenesis in vitro through a "splice-insert signaling code." In particular, neurexin 1beta carrying an alternative splice insert at site SS#4 interacts with neuroligin 2 (found predominantly at inhibitory synapses) but much less so with other neuroligins (those carrying an insert at site B and prevalent at excitatory synapses). The structure of neurexin 1beta+SS#4 reveals dramatic rearrangements to the "hypervariable surface," the binding site for neuroligins. The splice insert protrudes as a long helix into space, triggers conversion of loop beta10-beta11 into a helix rearranging the binding site for neuroligins, and rearranges the Ca(2+)-binding site required for ligand binding, increasing its affinity. Our structures reveal the mechanism by which neurexin 1beta isoforms acquire neuroligin splice isoform selectivity. Regulation of neurexin 1beta tertiary structure and ligand binding through alternative splicing.,Shen KC, Kuczynska DA, Wu IJ, Murray BH, Sheckler LR, Rudenko G Structure. 2008 Mar;16(3):422-31. PMID:18334217[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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