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| | ==Cryo EM structure of human SEIPIN== | | ==Cryo EM structure of human SEIPIN== |
| - | <StructureSection load='6ds5' size='340' side='right' caption='[[6ds5]], [[Resolution|resolution]] 3.80Å' scene=''> | + | <SX load='6ds5' size='340' side='right' viewer='molstar' caption='[[6ds5]], [[Resolution|resolution]] 3.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6ds5]] is a 11 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6DS5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6DS5 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6ds5]] is a 11 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=6DS5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6DS5 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.8Å</td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6ds5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ds5 OCA], [http://pdbe.org/6ds5 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6ds5 RCSB], [http://www.ebi.ac.uk/pdbsum/6ds5 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6ds5 ProSAT]</span></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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=6ds5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6ds5 OCA], [https://pdbe.org/6ds5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6ds5 RCSB], [https://www.ebi.ac.uk/pdbsum/6ds5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6ds5 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Disease == | | == Disease == |
| - | [[http://www.uniprot.org/uniprot/BSCL2_HUMAN BSCL2_HUMAN]] Autosomal dominant spastic paraplegia type 17;Severe neurodegenerative syndrome with lipodystrophy;Distal hereditary motor neuropathy type 5;Berardinelli-Seip congenital lipodystrophy. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. | + | [https://www.uniprot.org/uniprot/BSCL2_HUMAN BSCL2_HUMAN] Autosomal dominant spastic paraplegia type 17;Severe neurodegenerative syndrome with lipodystrophy;Distal hereditary motor neuropathy type 5;Berardinelli-Seip congenital lipodystrophy. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/BSCL2_HUMAN BSCL2_HUMAN]] Is a regulator of lipid catabolism essential for adipocyte differentiation. May also be involved in the central regulation of energy homeostasis (By similarity). Necessary for correct lipid storage and lipid droplets maintenance; may play a tissue-autonomous role in controlling lipid storage in adipocytes and in preventing ectopic lipid droplet formation in non-adipose tissues.<ref>PMID:19278620</ref> <ref>PMID:21533227</ref> | + | [https://www.uniprot.org/uniprot/BSCL2_HUMAN BSCL2_HUMAN] Is a regulator of lipid catabolism essential for adipocyte differentiation. May also be involved in the central regulation of energy homeostasis (By similarity). Necessary for correct lipid storage and lipid droplets maintenance; may play a tissue-autonomous role in controlling lipid storage in adipocytes and in preventing ectopic lipid droplet formation in non-adipose tissues.<ref>PMID:19278620</ref> <ref>PMID:21533227</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| - | </StructureSection> | + | </SX> |
| - | [[Category: Qian, H W]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Yan, N]] | + | [[Category: Large Structures]] |
| - | [[Category: Yan, R H]] | + | [[Category: Qian HW]] |
| - | [[Category: Yang, H Y]] | + | [[Category: Yan N]] |
| - | [[Category: Adipogenesis]] | + | [[Category: Yan RH]] |
| - | [[Category: Lipid binding protein]] | + | [[Category: Yang HY]] |
| - | [[Category: Lipid droplet]]
| + | |
| Structural highlights
Disease
BSCL2_HUMAN Autosomal dominant spastic paraplegia type 17;Severe neurodegenerative syndrome with lipodystrophy;Distal hereditary motor neuropathy type 5;Berardinelli-Seip congenital lipodystrophy. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by mutations affecting the gene represented in this entry.
Function
BSCL2_HUMAN Is a regulator of lipid catabolism essential for adipocyte differentiation. May also be involved in the central regulation of energy homeostasis (By similarity). Necessary for correct lipid storage and lipid droplets maintenance; may play a tissue-autonomous role in controlling lipid storage in adipocytes and in preventing ectopic lipid droplet formation in non-adipose tissues.[1] [2]
Publication Abstract from PubMed
The biogenesis of lipid droplets (LDs) and the development of adipocytes are two key aspects of mammalian fat storage. SEIPIN, an integral membrane protein of the endoplasmic reticulum (ER), plays a critical role in both LD formation and adipogenesis. The molecular function of SEIPIN, however, has yet to be elucidated. Here, we report the cryogenic electron microscopy structure of human SEIPIN at 3.8 A resolution. SEIPIN exists as an undecamer, and this oligomerization state is critical for its physiological function. The evolutionarily conserved lumenal domain of SEIPIN forms an eight-stranded beta sandwich fold. Both full-length SEIPIN and its lumenal domain can bind anionic phospholipids including phosphatidic acid. Our results suggest that SEIPIN forms a scaffold that helps maintain phospholipid homeostasis and surface tension of the ER.
Human SEIPIN Binds Anionic Phospholipids.,Yan R, Qian H, Lukmantara I, Gao M, Du X, Yan N, Yang H Dev Cell. 2018 Oct 22;47(2):248-256.e4. doi: 10.1016/j.devcel.2018.09.010. Epub, 2018 Oct 4. PMID:30293840[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Boutet E, El Mourabit H, Prot M, Nemani M, Khallouf E, Colard O, Maurice M, Durand-Schneider AM, Chretien Y, Gres S, Wolf C, Saulnier-Blache JS, Capeau J, Magre J. Seipin deficiency alters fatty acid Delta9 desaturation and lipid droplet formation in Berardinelli-Seip congenital lipodystrophy. Biochimie. 2009 Jun;91(6):796-803. doi: 10.1016/j.biochi.2009.01.011. Epub 2009, Feb 6. PMID:19278620 doi:http://dx.doi.org/10.1016/j.biochi.2009.01.011
- ↑ Tian Y, Bi J, Shui G, Liu Z, Xiang Y, Liu Y, Wenk MR, Yang H, Huang X. Tissue-autonomous function of Drosophila seipin in preventing ectopic lipid droplet formation. PLoS Genet. 2011 Apr;7(4):e1001364. doi: 10.1371/journal.pgen.1001364. Epub 2011 , Apr 14. PMID:21533227 doi:http://dx.doi.org/10.1371/journal.pgen.1001364
- ↑ Yan R, Qian H, Lukmantara I, Gao M, Du X, Yan N, Yang H. Human SEIPIN Binds Anionic Phospholipids. Dev Cell. 2018 Oct 22;47(2):248-256.e4. doi: 10.1016/j.devcel.2018.09.010. Epub, 2018 Oct 4. PMID:30293840 doi:http://dx.doi.org/10.1016/j.devcel.2018.09.010
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