>d1hezb2 b.1.1.2 (B:122-224) Immunoglobulin (constant domains of L and H chains) {Fab of human IgM RF 2A2} gsasaptlfplvscensnpsstvavgclaqdflpdsitfswkyknnsdisstrgfpsvlr ggkyaatsqvllpskdvaqgtnehvvckvqhpngnkekdvplp