The 4 subunits that make up an oocyte's zona peculida. Something seems to be up with the mRNA atlas entries for ZP3:r.

#ZP1, #ZP2, #ZP3, #ZP4 (zona pellucida glycoprotein 1, 2, 3 & 4): Human Protein Atlas Concensus mRNA tissue distributions & GPMDB protein tissue tabbulations. #proteomics

After a chase that lasted more than 10 years, finally here it is:

Architecture of the Vertebrate Egg Coat and Structural Basis of the ZP2 Block to Polyspermy
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4470110

#fertilization #oocyte #sperm #zonapellucida #zp_domain #zp_module #zp1 #zp2 #zp3 #infertility