Claim · model-written summary
The authors suggest that the arginine incorporated into cotyledonary protein indicates rapid protein turnover.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Verbatim
e0“pumpkin seedlings”
e1“The amounts of arginine incorporated into cotyledonary protein suggests that turnover was occurring at a rapid rate”
Title
Arginine metabolism by pumpkin seedlings. Separation of plant extracts by ion exchange resins
WALTER E. SPLITTSTOESSER Plant and Cell Physiology 1969. doi:10.1093/oxfordjournals.pcp.a074401
Other claims from this paper (5)
- Observation At most 24% of the 14C administered to the cotyledons as arginine was transported to the axis tissue.
- Observation After 96 hr, 50% of the administered 14C had been released as 14CO2, showing extensive arginine metabolism.
- Observation The remaining label was mainly in unmetabolized arginine, protein or the axis tissue, with little label in other amino acids.
- Mechanism The authors suggest that arginine carbon goes into protein or is catabolized to CO2, while the carbon for new amino acid skeletons comes from sugar.
- Method / resource A simple, reproducible method is reported for the quantitative fractionation of plant extracts or hydrolysates into basic, acidic and neutral amino acids, organic acids and sugars.