View source for 8hna


==Crystal structure of N-terminal fragment (20-221aa) of human SCARF1==
<StructureSection load='8hna' size='340' side='right'caption='[[8hna]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8hna]] 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=8HNA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8HNA FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.6&#8491;</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=8hna FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8hna OCA], [https://pdbe.org/8hna PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8hna RCSB], [https://www.ebi.ac.uk/pdbsum/8hna PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8hna ProSAT]</span></td></tr>
</table>
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== Publication Abstract from PubMed ==
SCARF1 (scavenger receptor class F member 1, SREC-1 or SR-F1) is a type I transmembrane protein that recognizes multiple endogenous and exogenous ligands such as modified low-density lipoproteins (LDLs) and is important for maintaining homeostasis and immunity. But the structural information and the mechanisms of ligand recognition of SCARF1 are largely unavailable. Here, we solve the crystal structures of the N-terminal fragments of human SCARF1, which show that SCARF1 forms homodimers and its epidermal growth factor (EGF)-like domains adopt a long-curved conformation. Then, we examine the interactions of SCARF1 with lipoproteins and are able to identify a region on SCARF1 for recognizing modified LDLs. The mutagenesis data show that the positively charged residues in the region are crucial for the interaction of SCARF1 with modified LDLs, which is confirmed by making chimeric molecules of SCARF1 and SCARF2. In addition, teichoic acids, a cell wall polymer expressed on the surface of gram-positive bacteria, are able to inhibit the interactions of modified LDLs with SCARF1, suggesting the ligand binding sites of SCARF1 might be shared for some of its scavenging targets. Overall, these results provide mechanistic insights into SCARF1 and its interactions with the ligands, which are important for understanding its physiological roles in homeostasis and the related diseases.

Structure of scavenger receptor SCARF1 and its interaction with lipoproteins.,Wang Y, Xu F, Li G, Cheng C, Yu B, Zhang Z, Kong D, Chen F, Liu Y, Fang Z, Cao L, Yu Y, Gu Y, He Y Elife. 2024 Nov 14;13:RP93428. doi: 10.7554/eLife.93428. PMID:39541158<ref>PMID:39541158</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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== References ==
<references/>
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: He Y]]
[[Category: Li G]]
[[Category: Wang Y]]