Products/Services Used | Details | Operation |
---|---|---|
Gene Synthesis> | cDNA fragments encoding 6His-tagged hZP1 and hZP1Mut (M1- S389 followed by the sequence TPIACSYDPARPPAA), Myc-tagged hZP2, FLAG- tagged hZP3 and HA-tagged hZP4 were synthesised (GenScript; GeneArt/Thermo Fisher Scientific) and subcloned into pHLsec329. | Get A Quote |
Mammalian fertilisation begins when sperm interacts with the egg zona pellucida (ZP), whose ZP1 subunit is important for fertility by covalently cross-linking ZP filaments into a three-dimensional matrix. Like ZP4, a structurally-related component absent in the mouse, ZP1 is predicted to contain an N-terminal ZP-N domain of unknown function. Here we report a characterisation of ZP1 proteins carrying mutations from infertile patients, which suggests that, in human, filament cross-linking by ZP1 is crucial to form a stable ZP. We map the function of ZP1 to its ZP-N1 domain and determine crystal structures of ZP-N1 homodimers from a chicken homolog of ZP1. These reveal that ZP filament cross-linking is... More