Describe the roles of antimicrobial proteins in innate immunity.

The larger antimicrobial proteins, containing more than 100 amino acids, are often lytic enzymes. The smaller antimicrobial peptides act largely by disrupting the structure or function of microbial cell membranes. They have a net positive charge. The positive charge makes antimicrobial peptides selective, so they only adhere to negatively-charged bacterial cell membranes instead of host cell membranes.The most important antimicrobial proteins are Interferon and Complement proteins

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.