250 purC PUR7_BIFLD Phosphoribosylaminoimidazole-succinocarboxamide synthase BLD_0860 MEKLEKLYEGKAKQLYATDDPEVLWVEYKNTATAGDGEKKEDFTGKGRLNNLITTIIFDLLKKRGIDSHLIKRVDDTGQLVRKVNMFPLEIVLRNVAAGHFCSRLGVEEGLPLKEPVLEYFLKNDDLHDPFVNDDDLVALGVCTREDLAEIAPLARKINEALIEIFAKIDVKLVDFKIEMGRATDGTLLLADEITPDSCRLWDQKDHSGKVEHLDKDLFRRGLGSIIPAYEEIEERLAELAKSEGIEVAE SAICAR synthetase