7rtm

<table><tr><td colspan='2'>[[7rtm]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7RTM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7RTM FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CO3:CARBONATE+ION'>CO3</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>

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== Publication Abstract from PubMed ==

SLC4 transporters play significant roles in pH regulation and cellular sodium transport. The previously solved structures of the outward facing (OF) conformation for AE1 (SLC4A1) and NBCe1 (SLC4A4) transporters revealed an identical overall fold despite their different transport modes (chloride/bicarbonate exchange versus sodium-carbonate cotransport). However, the exact mechanism determining the different transport modes in the SLC4 family remains unknown. In this work, we report the cryo-EM 3.4 A structure of the OF conformation of NDCBE (SLC4A8), which shares transport properties with both AE1 and NBCe1 by mediating the electroneutral exchange of sodium-carbonate with chloride. This structure features a fully resolved extracellular loop 3 and well-defined densities corresponding to sodium and carbonate ions in the tentative substrate binding pocket. Further, we combine computational modeling with functional studies to unravel the molecular determinants involved in NDCBE and SLC4 transport.

 

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== References ==

[[Category: Abuladze, N]]

[[Category: Azimov, R]]

[[Category: Kao, L]]

[[Category: Kayik, G]]

[[Category: Kurtz, I]]

[[Category: Muhammad-Khan, H]]

[[Category: Newman, D]]

[[Category: Noskov, S Y]]

[[Category: Pushkin, A]]

[[Category: Tsirulnikov, K]]

[[Category: Wang, W G]]

[[Category: Zhekova, H]]

[[Category: Zhou, Z H]]

[[Category: Sodium-driven chloride/bicarbonate exchanger]]