8rki
From Proteopedia
(Difference between revisions)
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=8rki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8rki OCA], [https://pdbe.org/8rki PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8rki RCSB], [https://www.ebi.ac.uk/pdbsum/8rki PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8rki 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=8rki FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8rki OCA], [https://pdbe.org/8rki PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8rki RCSB], [https://www.ebi.ac.uk/pdbsum/8rki PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8rki ProSAT]</span></td></tr> | ||
</table> | </table> | ||
| - | == | + | <div style="background-color:#fffaf0;"> |
| - | + | == Publication Abstract from PubMed == | |
| + | Following the fertilization of an egg by a single sperm, the egg coat or zona pellucida (ZP) hardens and polyspermy is irreversibly blocked. These events are associated with the cleavage of the N-terminal region (NTR) of glycoprotein ZP2, a major subunit of ZP filaments. ZP2 processing is thought to inactivate sperm binding to the ZP, but its molecular consequences and connection with ZP hardening are unknown. Biochemical and structural studies show that cleavage of ZP2 triggers its oligomerization. Moreover, the structure of a native vertebrate egg coat filament, combined with AlphaFold predictions of human ZP polymers, reveals that two protofilaments consisting of type I (ZP3) and type II (ZP1/ZP2/ZP4) components interlock into a left-handed double helix from which the NTRs of type II subunits protrude. Together, these data suggest that oligomerization of cleaved ZP2 NTRs extensively cross-links ZP filaments, rigidifying the egg coat and making it physically impenetrable to sperm. | ||
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| + | ZP2 cleavage blocks polyspermy by modulating the architecture of the egg coat.,Nishio S, Emori C, Wiseman B, Fahrenkamp D, Dioguardi E, Zamora-Caballero S, Bokhove M, Han L, Stsiapanava A, Algarra B, Lu Y, Kodani M, Bainbridge RE, Komondor KM, Carlson AE, Landreh M, de Sanctis D, Yasumasu S, Ikawa M, Jovine L Cell. 2024 Mar 14;187(6):1440-1459.e24. doi: 10.1016/j.cell.2024.02.013. PMID:38490181<ref>PMID:38490181</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 8rki" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Molecular basis of ZP3/ZP1 heteropolymerization: crystal structure of a native vertebrate egg coat filament fragment
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