The transgene comprises the rearranged IGKV3-2*01 (formerly Vk21C)/Jk2 immunoglobulin kappa light chain from a hybridoma cell line. It encodes the light chain of antibodies generated in C57BL/6 mice against the antigenic NC1 domain from collagen type IV, alpha 3 (anti-alpha3(IV)NC1). (J:140740, J:261505)