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| | ==The crystal structure of Mu homology domain of SGIP1== | | ==The crystal structure of Mu homology domain of SGIP1== |
| - | <StructureSection load='6a9y' size='340' side='right' caption='[[6a9y]], [[Resolution|resolution]] 2.70Å' scene=''> | + | <StructureSection load='6a9y' size='340' side='right'caption='[[6a9y]], [[Resolution|resolution]] 2.70Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6a9y]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6A9Y OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6A9Y FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6a9y]] is a 1 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=6A9Y OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6A9Y FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SGIP1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7Å</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=6a9y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6a9y OCA], [http://pdbe.org/6a9y PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6a9y RCSB], [http://www.ebi.ac.uk/pdbsum/6a9y PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6a9y 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=6a9y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6a9y OCA], [https://pdbe.org/6a9y PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6a9y RCSB], [https://www.ebi.ac.uk/pdbsum/6a9y PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6a9y ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SGIP1_HUMAN SGIP1_HUMAN]] May function in clathrin-mediated endocytosis. Has both a membrane binding/tubulating activity and the ability to recruit proteins essential to the formation of functional clathrin-coated pits. Has a preference for membranes enriched in phosphatidylserine and phosphoinositides and is required for the endocytosis of the transferrin receptor. May also bind tubulin. May play a role in the regulation of energy homeostasis (By similarity). | + | [https://www.uniprot.org/uniprot/SGIP1_HUMAN SGIP1_HUMAN] May function in clathrin-mediated endocytosis. Has both a membrane binding/tubulating activity and the ability to recruit proteins essential to the formation of functional clathrin-coated pits. Has a preference for membranes enriched in phosphatidylserine and phosphoinositides and is required for the endocytosis of the transferrin receptor. May also bind tubulin. May play a role in the regulation of energy homeostasis (By similarity). |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| - | [[Category: Feng, Y]] | + | [[Category: Large Structures]] |
| - | [[Category: Liu, X]] | + | [[Category: Feng Y]] |
| - | [[Category: Dimer]] | + | [[Category: Liu X]] |
| - | [[Category: Disulfide bond]]
| + | |
| - | [[Category: Endocytosis]]
| + | |
| - | [[Category: Sgip1]]
| + | |
| Structural highlights
Function
SGIP1_HUMAN May function in clathrin-mediated endocytosis. Has both a membrane binding/tubulating activity and the ability to recruit proteins essential to the formation of functional clathrin-coated pits. Has a preference for membranes enriched in phosphatidylserine and phosphoinositides and is required for the endocytosis of the transferrin receptor. May also bind tubulin. May play a role in the regulation of energy homeostasis (By similarity).
Publication Abstract from PubMed
Along with its homologs FCHo1 and FCHo2, SGIP1 plays an important role in clathrin-mediated endocytosis. The highly conserved C-terminal muHD domains in these proteins are the critical regions interacting with adapter molecules such as Eps15. The crystal structure of muHD domain of SGIP1 has been reported previously. In this study, we found that muHD domain of SGIP1 is capable of forming a stable dimer by an intermolecular disulfide bond formed by C632 in our crystal structure. The mutational study of C632 revealed that this residue is important for the function of SGIP1 during cellular endocytosis. Our study revealed a new dimerization and/or oligomerization manner in theses adaptor proteins, which is a critical prerequisite for their proper function.
SGIP1 dimerizes via intermolecular disulfide bond in muHD domain during cellular endocytosis.,Zhang Y, Feng Y, Xin Y, Liu X Biochem Biophys Res Commun. 2018 Sep 18. pii: S0006-291X(18)32000-X. doi:, 10.1016/j.bbrc.2018.09.075. PMID:30236986[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Zhang Y, Feng Y, Xin Y, Liu X. SGIP1 dimerizes via intermolecular disulfide bond in muHD domain during cellular endocytosis. Biochem Biophys Res Commun. 2018 Sep 18. pii: S0006-291X(18)32000-X. doi:, 10.1016/j.bbrc.2018.09.075. PMID:30236986 doi:http://dx.doi.org/10.1016/j.bbrc.2018.09.075
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