8gmp: Difference between revisions
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==Cryo-EM structure of octameric human CALHM1 with a I109W point mutation== | |||
<StructureSection load='8gmp' size='340' side='right'caption='[[8gmp]], [[Resolution|resolution]] 2.80Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8gmp]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8GMP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8GMP FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.8Å</td></tr> | |||
[[Category: | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=POV:(2S)-3-(HEXADECANOYLOXY)-2-[(9Z)-OCTADEC-9-ENOYLOXY]PROPYL+2-(TRIMETHYLAMMONIO)ETHYL+PHOSPHATE'>POV</scene></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=8gmp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8gmp OCA], [https://pdbe.org/8gmp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8gmp RCSB], [https://www.ebi.ac.uk/pdbsum/8gmp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8gmp ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CAHM1_HUMAN CAHM1_HUMAN] Pore-forming subunit of a voltage-gated ion channel required for sensory perception of sweet, bitter and umami tastes (By similarity). Specifically present in type II taste bud cells, where it plays a central role in sweet, bitter and umami taste perception by inducing ATP release from the cell, ATP acting as a neurotransmitter to activate afferent neural gustatory pathways (By similarity). Together with CALHM3, forms a fast-activating voltage-gated ATP-release channel in type II taste bud cells (TBCs) (By similarity). Acts both as a voltage-gated and calcium-activated ion channel: mediates neuronal excitability in response to changes in extracellular Ca(2+) concentration (PubMed:22711817, PubMed:23300080). Has poor ion selectivity and forms a wide pore (around 14 Angstroms) that mediates permeation of Ca(2+), Na(+) and K(+), as well as permeation of monovalent anions (PubMed:22711817). Acts as an activator of the ERK1 and ERK2 cascade (PubMed:23345406). Triggers endoplasmic reticulum stress by reducing the calcium content of the endoplasmic reticulum (PubMed:21574960). May indirectly control amyloid precursor protein (APP) proteolysis and aggregated amyloid-beta (Abeta) peptides levels in a Ca(2+) dependent manner (PubMed:18585350).[UniProtKB:D3Z291]<ref>PMID:18585350</ref> <ref>PMID:21574960</ref> <ref>PMID:22711817</ref> <ref>PMID:23300080</ref> <ref>PMID:23345406</ref> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Furukawa H]] | |||
[[Category: Syrjanen JL]] | |||