Claim · model-written summary
Barley scutella took up Gly-Pro.
- Taxon
- barley
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Hordeum vulgaree1 - Outcome
- Gly-Proe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“The three dipeptides tested for uptake, Ala-Gly, Pro-Gly, and Gly-Pro, were all taken up by the scutella”
e1“germinating barley grains”
Title
Uptake of Glycylglycine by the Scutellum of Germinating Barley Grain
Tuomas Sopanen; David Burston; Elizabeth Taylor; et al. PLANT PHYSIOLOGY 1978. doi:10.1104/pp.61.4.630
Other claims from this paper (19)
- Observation Barley scutella rapidly took up labeled glycylglycine.
- Observation Gly-Gly uptake had a pH optimum near 4.5.
- Observation Gly-Gly uptake followed Michaelis-Menten kinetics with apparent Km of 2.3 mm.
- Observation Gly-Gly uptake had Vmax of 41 mumole gram(-1) hour(-1).
- Intervention effect Dinitrophenol strongly inhibited Gly-Gly uptake.
- Intervention effect Cyanide strongly inhibited Gly-Gly uptake.
- Intervention effect Lack of oxygen strongly inhibited Gly-Gly uptake.
- Observation No intact Gly-Gly was detectable in scutella after incubation.
- Intervention effect Free glycine increased in scutella after incubation with Gly-Gly.
- Intervention effect Glycylsarcosine competitively inhibited Gly-Gly uptake.
- Intervention effect At infinitely high inhibitor concentration, glycylsarcosine completely inhibited Gly-Gly uptake.
- Mechanism Gly-Gly was inferred to enter as an intact dipeptide and then be hydrolyzed to glycine.
- Intervention effect Glycine did not affect Gly-Gly uptake.
- Intervention effect Leucine did not affect Gly-Gly uptake.
- Intervention effect All ten tested dipeptides strongly inhibited Gly-Gly uptake.
- Observation Barley scutella took up Ala-Gly.
- Observation Barley scutella took up Pro-Gly.
- Mechanism Dipeptide uptake appeared nonspecific to amino acid side chains.
- Mechanism High dipeptide uptake rates suggest a role in reserve protein mobilization.