>5xjc_p mol:protein length:225 U2 small nuclear ribonucleoprotein B'' MDIRPNHTIYINNMNDKIKKEELKRSLYALFSQFGHVVDIVALKTMKMRGQAFVIFKEL GSSTNALRQLQGFPFYGKPMRIQYAKTDSDIISKMRGTFADKEKKKEKKKAKTVEQTAT TTNKKPGQGTPNSANTQGNSTPNPQVPDYPPNYILFLNNLPEETNEMMLSMLFNQFPGF KEVRLVPGRHDIAFVEFENDGQAGAARDALQGFKITPSHAMKITYAKK