7epz

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[7epz]] is a 2 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=7EPZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7EPZ FirstGlance]. <br>
<table><tr><td colspan='2'>[[7epz]] is a 2 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=7EPZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7EPZ FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=J9O:2-[(1S)-1-[4-[2-(4-chloranylphenoxy)ethanoyl]piperazin-1-yl]ethyl]-3-(2-ethoxyphenyl)quinazolin-4-one'>J9O</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PX8:1,2-DISTEAROYL-SN-GLYCERO-3-PHOSPHATE'>PX8</scene></td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.4&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=J9O:2-[(1~{S})-1-[4-[2-(4-chloranylphenoxy)ethanoyl]piperazin-1-yl]ethyl]-3-(2-ethoxyphenyl)quinazolin-4-one'>J9O</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PX8:1,2-DISTEAROYL-SN-GLYCERO-3-PHOSPHATE'>PX8</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=7epz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7epz OCA], [https://pdbe.org/7epz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7epz RCSB], [https://www.ebi.ac.uk/pdbsum/7epz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7epz ProSAT]</span></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=7epz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7epz OCA], [https://pdbe.org/7epz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7epz RCSB], [https://www.ebi.ac.uk/pdbsum/7epz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7epz ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
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[[https://www.uniprot.org/uniprot/XCT_HUMAN XCT_HUMAN]] Sodium-independent, high-affinity exchange of anionic amino acids with high specificity for anionic form of cystine and glutamate.<ref>PMID:15151999</ref>
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[https://www.uniprot.org/uniprot/4F2_HUMAN 4F2_HUMAN] Required for the function of light chain amino-acid transporters. Involved in sodium-independent, high-affinity transport of large neutral amino acids such as phenylalanine, tyrosine, leucine, arginine and tryptophan. Involved in guiding and targeting of LAT1 and LAT2 to the plasma membrane. When associated with SLC7A6 or SLC7A7 acts as an arginine/glutamine exchanger, following an antiport mechanism for amino acid transport, influencing arginine release in exchange for extracellular amino acids. Plays a role in nitric oxide synthesis in human umbilical vein endothelial cells (HUVECs) via transport of L-arginine. Required for normal and neoplastic cell growth. When associated with SLC7A5/LAT1, is also involved in the transport of L-DOPA across the blood-brain barrier, and that of thyroid hormones triiodothyronine (T3) and thyroxine (T4) across the cell membrane in tissues such as placenta. Involved in the uptake of methylmercury (MeHg) when administered as the L-cysteine or D,L-homocysteine complexes, and hence plays a role in metal ion homeostasis and toxicity. When associated with SLC7A5 or SLC7A8, involved in the cellular activity of small molecular weight nitrosothiols, via the stereoselective transport of L-nitrosocysteine (L-CNSO) across the transmembrane. Together with ICAM1, regulates the transport activity LAT2 in polarized intestinal cells, by generating and delivering intracellular signals. When associated with SLC7A5, plays an important role in transporting L-leucine from the circulating blood to the retina across the inner blood-retinal barrier.<ref>PMID:11557028</ref> <ref>PMID:9829974</ref> <ref>PMID:9751058</ref> <ref>PMID:9878049</ref> <ref>PMID:10903140</ref> <ref>PMID:11311135</ref> <ref>PMID:11389679</ref> <ref>PMID:11564694</ref> <ref>PMID:11742812</ref> <ref>PMID:12117417</ref> <ref>PMID:12225859</ref> <ref>PMID:14603368</ref> <ref>PMID:12716892</ref> <ref>PMID:15980244</ref> <ref>PMID:15769744</ref>
== References ==
== References ==
<references/>
<references/>

Current revision

Overall structure of Erastin-bound xCT-4F2hc complex

PDB ID 7epz

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