Purity > 90% as determined by SDS-PAGE. MW: 72.4kDa. Full Length of Mature Protein: 24-633aa. N-terminal 6xHis-tagged. Gallus gallus (Chicken). Precursor of the egg-yolk proteins that are sources of nutrients during early development of oviparous organisms.Phosvitin is believed to be of importance in sequestering calcium, iron and other cations for the developing bryo.