title: Absence of carbohydrate in crystalline Fraction I protein isolated from tobacco leaves.
mesh_terms: D002241:Carbohydrates / Q000032:analysis; D002849:Chromatography, Gas; D002850:Chromatography, Gel; D003460:Crystallization; D013058:Mass Spectrometry; D010940:Plant Proteins / Q000032:analysis* / Q000302:isolation & purification; D010947:Plants, Toxic; D013045:Species Specificity; D014026:Nicotiana; D014461:Ultracentrifugation; D014462:Ultrafiltration
chemical_list: D002241:Carbohydrates; D010940:Plant Proteins