i molecular structure protective antigen that mediates entry of lf or ef into eukaryotic cells: lethal Anthraxtoxin factor, edema factor(an adenylate cyclase): Genes pXO1: 184.kbp, coding for three to like lethal factor, oedema factor protective antigen causing haemorrhage, oedema, and necrosIs XO2: 95.3 kbp encoding three genes(cap B, cap C, cap A)involved in the synthesis of the polyglutamyl capsule that inhibits host phagocytosis of B anthracisi molecular structure polypeptide, antiphagocytic, immunogenic; protective antigen that mediates entry of LF or EF into eukaryotic cells; lethal factor, edema factor(an adenylate cyclase); • pXO1: 184.5kbp, coding for three toxins like lethal factor, oedema factor, protective antigen causing haemorrhage, oedema, and necrosis; • pXO2: 95.3 kbp encoding three genes (cap B, cap C, cap A) involved in the synthesis of the polyglutamyl capsule that inhibits host phagocytosis of B anthracis;