Involved in disease resistance. Expressed in hypocotyls and leaves. Induced by salicylate, methyl viologen, chitosan, hydrogen peroxide and sodium phosphate. Causes an allergic reaction in human (PubMed:12417891, PubMed:14713921). Gly m 4 is the major soy allergen for patients allergic to birch pollen with soy allergy (PubMed:12417891, PubMed:14713921). Binds to IgE (PubMed:12417891, PubMed:14713921). Belongs to the BetVI family.