Egg white must provide nutrients and protection to the developing avian embryo. One way in which this is achieved is an arsenal of antimicrobial proteins and peptides which are essentially extensions of the innate immune system. Gallin is a recently identified member of a family of peptides that are found in egg white.
The function of this peptide family has not been identified and they are potentially antimicrobial.
The article was contributed by The University of Edinburgh, previously published by BioMed Central.