>d1hezd2 b.1.1.2 (D:122-224) Immunoglobulin (constant domains of L and H chains) {Fab of human IgM RF 2A2} gsasaptlfplvscenstvavgclaqdflpdsitfswkyknnsdisstrgfpsvlrggky aatsqvllpsnehvvckvqhpngnkekdvplp