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Molecular Mass of both SAS-1 and SAS-2 Is ∼74.5 kD as Indicated by Mass Spectrometry.
Spectrograph of purified SAS-1 (top spectrograph) and SAS-2 (bottom spectrograph) were individually analyzed by MOLDI-TOF mass spectrometry. First peak is the doubly charged ion, and the second peak is the singly charged ion.
