>2r1d_C mol:protein length:226 Neurexin-1-beta GSSLGAHHIHHFHGSSKHHSVPIAIYRSPASLRGGHAGTTYIFSKGGGQITYKWPPNDR PSTRADRLAIGFSTVQKEAVLVRVDSSSGLGDYLELHIHQGKIGVKFNVGTDDIAIEES NAIINDGKYHVVRFTRSGGNATLQVDSWPVIERYPAGRQLTIFNSQATIIIGGKEQGQP FQGQLSGLYYNGLKVLNMAAENDANIAIVGNVRLVGEVPSSMTTESTAT