6rvy: Difference between revisions
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==Inward-open structure of the ASCT2 (SLC1A5) mutant C467R in absence of substrate== | |||
<SX load='6rvy' size='340' side='right' viewer='molstar' caption='[[6rvy]], [[Resolution|resolution]] 4.13Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6rvy]] is a 3 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=6RVY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6RVY 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]] 4.13Å</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=6rvy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6rvy OCA], [https://pdbe.org/6rvy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6rvy RCSB], [https://www.ebi.ac.uk/pdbsum/6rvy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6rvy ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/AAAT_HUMAN AAAT_HUMAN] Sodium-dependent amino acids transporter that has a broad substrate specificity, with a preference for zwitterionic amino acids. It accepts as substrates all neutral amino acids, including glutamine, asparagine, and branched-chain and aromatic amino acids, and excludes methylated, anionic, and cationic amino acids (PubMed:8702519). Through binding of the fusogenic protein syncytin-1/ERVW-1 may mediate trophoblasts syncytialization, the spontaneous fusion of their plasma membranes, an essential process in placental development (PubMed:10708449, PubMed:23492904).<ref>PMID:10708449</ref> <ref>PMID:23492904</ref> <ref>PMID:8702519</ref> (Microbial infection) Acts as a cell surface receptor for Feline endogenous virus RD114.<ref>PMID:10051606</ref> <ref>PMID:10196349</ref> (Microbial infection) Acts as a cell surface receptor for Baboon M7 endogenous virus.<ref>PMID:10196349</ref> (Microbial infection) Acts as a cell surface receptor for type D simian retroviruses.<ref>PMID:10196349</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The human Alanine Serine Cysteine Transporter 2 (ASCT2) is a neutral amino acid exchanger that belongs to the solute carrier family 1 (SLC1A). SLC1A structures have revealed an elevator-type mechanism, in which the substrate is translocated across the cell membrane by a large displacement of the transport domain, whereas a small movement of hairpin 2 (HP2) gates the extracellular access to the substrate-binding site. However, it has remained unclear how substrate binding and release is gated on the cytoplasmic side. Here, we present an inward-open structure of the human ASCT2, revealing a hitherto elusive SLC1A conformation. Strikingly, the same structural element (HP2) serves as a gate in the inward-facing as in the outward-facing state. The structures reveal that SLC1A transporters work as one-gate elevators. Unassigned densities near the gate and surrounding the scaffold domain, may represent potential allosteric binding sites, which could guide the design of lipidic-inhibitors for anticancer therapy. | |||
A one-gate elevator mechanism for the human neutral amino acid transporter ASCT2.,Garaeva AA, Guskov A, Slotboom DJ, Paulino C Nat Commun. 2019 Jul 31;10(1):3427. doi: 10.1038/s41467-019-11363-x. PMID:31366933<ref>PMID:31366933</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 6rvy" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</SX> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Garaeva AA]] | |||
[[Category: Guskov A]] | |||
[[Category: Paulino C]] | |||
[[Category: Slotboom DJ]] | |||
Latest revision as of 10:13, 22 May 2024
Inward-open structure of the ASCT2 (SLC1A5) mutant C467R in absence of substrate
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