>2XBP_1|Chain A|NITROGEN REGULATORY PROTEIN P-II|SYNECHOCOCCUS ELONGATUS (1140) MKKIEAIIRPFKLDEVKIALVNAGIVGMTVSEVRGFGRQKGQTERYRGSEYTVEFLQKLKLEIVVEDAQVDTVIDKIVAAARTGENGDGKIFVSPVDQTIRIRTGEKNADAIS