What question did this study set out to answer?

To determine whether the GDP-bound form of the small G-protein ARF1 interacts directly with transducin subunits.

April 10, 1995FEBS Letters

The small G‐protein ARF1GDP binds to the Gtβγ subunit of transducin, but not to GtαGDP‐Gtβγ

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Authors

MFMichel FrancoCentre National de la Recherche Scientifique SPS ParisThe Honourable Society of Lincoln's Inn MCMarc ChabreCentre National de la Recherche Scientifique

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Implication

Biochemical analysis demonstrates competitive binding of ARF1 to transducin beta-gamma subunits in retinal membranes, highlighting a conserved motif shared across G-protein families.

Key Points

To determine whether the GDP-bound form of the small G-protein ARF1 interacts directly with transducin subunits.
Retinal membranes containing holotransducin were incubated with ARF1-GDP alongside aluminum fluoride to induce subunit dissociation.
Binding interactions were evaluated using phospholipid vesicles reconstituted with isolated transducin beta-gamma subunits in the presence and absence of alpha subunits.
Aluminum fluoride induced transducin alpha subunit release while enabling ARF1-GDP to bind the membrane-retained beta-gamma subunits.
ARF1-GDP bound to reconstituted phospholipid vesicles in direct proportion to beta-gamma concentration and was displaced upon the addition of transducin alpha-GDP.

Cite This Study

Franco et al. (1995) studied this question.

synapsesocial.com/papers/6a83fa746eaad3b729ee980f https://doi.org/10.1016/0014-5793(95)00258-b

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Implication

Biochemical analysis demonstrates competitive binding of ARF1 to transducin beta-gamma subunits in retinal membranes, highlighting a conserved motif shared across G-protein families.

The small G‐protein ARF1GDP binds to the Gtβγ subunit of transducin, but not to GtαGDP‐Gtβγ

Discussion

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Implication

Key Points

Cite This Study

The small G‐protein ARF1GDP binds to the Gtβγ subunit of transducin, but not to GtαGDP‐Gtβγ

Discussion

Member takes

Implication

Key Points

Cite This Study

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