4e50: Difference between revisions
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<StructureSection load='4e50' size='340' side='right'caption='[[4e50]], [[Resolution|resolution]] 2.70Å' scene=''> | <StructureSection load='4e50' size='340' side='right'caption='[[4e50]], [[Resolution|resolution]] 2.70Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4e50]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4E50 OCA]. For a <b>guided tour on the structure components</b> use [ | <table><tr><td colspan='2'>[[4e50]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4E50 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4E50 FirstGlance]. <br> | ||
</td></tr> | </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=4e50 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4e50 OCA], [https://pdbe.org/4e50 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4e50 RCSB], [https://www.ebi.ac.uk/pdbsum/4e50 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4e50 ProSAT]</span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | |||
[[https://www.uniprot.org/uniprot/CALM1_MOUSE CALM1_MOUSE]] Calmodulin mediates the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis. Is a regulator of voltage-dependent L-type calcium channels. Mediates calcium-dependent inactivation of CACNA1C. Positively regulates calcium-activated potassium channel activity of KCNN2. Forms a potassium channel complex with KCNQ1 and regulates electrophysiological activity of the channel via calcium-binding. Acts as a sensor to modulate the endoplasmic reticulum contacts with other organelles mediated by VMP1:ATP2A2 (By similarity).[UniProtKB:P0DP23][[https://www.uniprot.org/uniprot/NEUG_MOUSE NEUG_MOUSE]] Regulates the affinity of calmodulin for calcium. Involved in synaptic plasticity and spatial learning.<ref>PMID:11016969</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: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Mus musculus]] | ||
[[Category: | [[Category: Kumar V]] | ||
[[Category: | [[Category: Sivaraman J]] | ||
Revision as of 09:50, 28 September 2022
Calmodulin and Ng peptide complexCalmodulin and Ng peptide complex
Structural highlights
Function[CALM1_MOUSE] Calmodulin mediates the control of a large number of enzymes, ion channels, aquaporins and other proteins through calcium-binding. Among the enzymes to be stimulated by the calmodulin-calcium complex are a number of protein kinases and phosphatases. Together with CCP110 and centrin, is involved in a genetic pathway that regulates the centrosome cycle and progression through cytokinesis. Is a regulator of voltage-dependent L-type calcium channels. Mediates calcium-dependent inactivation of CACNA1C. Positively regulates calcium-activated potassium channel activity of KCNN2. Forms a potassium channel complex with KCNQ1 and regulates electrophysiological activity of the channel via calcium-binding. Acts as a sensor to modulate the endoplasmic reticulum contacts with other organelles mediated by VMP1:ATP2A2 (By similarity).[UniProtKB:P0DP23][NEUG_MOUSE] Regulates the affinity of calmodulin for calcium. Involved in synaptic plasticity and spatial learning.[1] Publication Abstract from PubMedNeuromodulin (Nm) and neurogranin (Ng) are neuron-specific substrates of protein kinase C (PKC). Their interactions with Calmodulin (CaM) are crucial for learning and memory formation in neurons. Here, we report the structure of IQ peptides (24aa) of Nm/Ng complexed with CaM and their functional studies with full-length proteins. Nm/Ng and their respective IQ peptides are intrinsically unstructured; however, upon binding with CaM, IQ motifs adopt a helical conformation. Ser41 (Ser36) of Nm (Ng) is located in a negatively charged pocket in the apo CaM and, when phosphorylated, it will repel Nm/Ng from CaM. These observations explain the mechanism by which PKC-induced Ser phosphorylation blocks the association of Nm/Ng with CaM and interrupts several learning- and memory-associated functions. Moreover, the present study identified Arg as a key CaM interacting residue from Nm/Ng. This residue is crucial for CaM-mediated function, as evidenced by the inability of the Ng mutant (Arg-to-Ala) to potentiate synaptic transmission in CA1 hippocampal neurons. Structural basis for the interaction of unstructured neuron specific substrates neuromodulin and neurogranin with calmodulin.,Kumar V, Chichili VP, Zhong L, Tang X, Velazquez-Campoy A, Sheu FS, Seetharaman J, Gerges NZ, Sivaraman J Sci Rep. 2013 Mar 6;3:1392. doi: 10.1038/srep01392. PMID:23462742[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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