1. A method for treating an autoimmune or inflammatory disease in a mammal, the method comprising administering to the mammal an effective amount of a polymer protein containing five, six or seven polypeptide monomeric units, wherein each polypeptide monomeric unit contains an Fc receptor binding site containing two constant regions of an immunoglobulin heavy chain G； in this case, each constant region of the heavy chain of immunoglobulin G contains a cysteine residue, which is linked through a disulfide bond to the cyst new residue heavy chain constant region polypeptide immunoglobulin G adjacent monomeric unit； wherein the protein polymer contains additional immunomodulatory portion or portion of the antigen, which causes antigen-specific immunosuppression when administered to a subject-mlekopitayuschemu.2. The method of claim 1, wherein each polypeptide monomeric unit comprises a tail region fused to each of two constant regions of an immunoglobulin G heavy chain； while the tail portion of each polypeptide monomeric unit facilitates the assembly of monomeric units into a polymer. 3. The method of claim 2, wherein the tail portion is a tail portion of IgM or IgA, or a fragment thereof, or variant. The method according to claim 1, wherein each of the constant regions of the heavy chain of an immunoglobulin G contains an amino acid sequence having at least 90% identity with the sequence of the constant region of the heavy chain of a native human immunoglobulin G1. The method of claim 1, wherein each of the constant regions of the immunoglobulin G heavy chain contains an amino acid1. Способ лечения аутоиммунного или воспалительного заболевания млекопитающего, при этом способ включаетвведение млекопитающему эффективного количества полимерного белка, содержащего пять, шесть или семь полипептидных мономерных звеньев；при этом каждое полипептидное мономерное звено содержит участок связывания Fc-рецептора, содержащий две константные области тяжелой цепи иммуноглобулина G；п
