>2r1b_B mol:protein length:220 Neurexin-1-beta GSSLRGGHAGTTYIFSKGGGQITYKWPPNDRPSTRADRLAIGFSTVQKEAVLVRVDSSS GLGDYLELHIHQGKIGVKFNVGTDDIAIEESNAIINDGKYHVVRFTRSGGNATLQVDSW PVIERYPAGNNDNERLAIARQRIPYRLGRVVDEWLLDKGRQLTIFNSQATIIIGGKEQG QPFQGQLSGLYYNGLKVLNMAAENDANIAIVGNVRLVGEVPSS