STRUCTURAL AND BIOCHEMICAL STUDIES IDENTIFY TOBACCO SABP2 AS A METHYLSALICYLATE ESTERASE AND FURTHER IMPLICATE IT IN PLANT INNATE IMMUNITY, NORTHEAST STRUCTURAL GENOMICS TARGET AR2241 STRUCTURAL GENOMICS, UNKNOWN FUNCTION, ALPHA-BETA PROTEIN, PSI, PROTEIN STRUCTURE INITIATIVE, NORTHEAST STRUCTURAL GENOMICS CONSORTIUM, NESG 1Y7I