Cited by 44Receptor Mechanisms and SignalingPhotoreceptor and optogenetics researchProtein Kinase Regulation and GTPase Signaling

The rhodopsin-transducin complex houses two distinct rhodopsin molecules

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Jastrzebska, Beata, Ringler, Philippe, Palczewski, Krzysztof, Engel, Andreas·2013·Journal of Structural Biology

Abstract

Upon illumination the visual receptor rhodopsin (Rho) transitions to the activated form Rho(∗), which binds the heterotrimeric G protein, transducin (Gt) causing GDP to GTP exchange and Gt dissociation. Using succinylated concanavalin A (sConA) as a probe, we visualized native Rho dimers solubilized in 1mM n-dodecyl-β-d-maltoside (DDM) and Rho monomers in 5mM DDM. By nucleotide depletion and affinity chromatography together with crosslinking and size exclusion chromatography, we trapped and purified nucleotide-free Rho(∗)·Gt and sConA-Rho(∗)·Gt complexes kept in solution by either DDM or lauryl-maltose-neopentyl-glycol (LMNG). The 3 D envelope calculated from projections of negatively stained Rho(∗)·Gt-LMNG complexes accommodated two Rho molecules, one Gt heterotrimer and a detergent belt. Visualization of triple sConA-Rho(∗)·Gt complexes unequivocally demonstrated a pentameric assembly of the Rho(∗)·Gt complex in which the photoactivated Rho(∗) dimer serves as a platform for binding the Gt heterotrimer. Importantly, individual monomers of the Rho(∗) dimer in the heteropentameric complex exhibited different capabilities for regeneration with either 11-cis or 9-cis-retinal.

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Crossref · 10.1016/j.jsb.2013.02.014

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  • The dimeric structure of rhodopsin in the complex was confirmed using succinylated concanavalin A as a labeling probe.

    “The dimeric structure of rhodopsin in the complex was confirmed using succinylated concanavalin A as a labeling probe.”

    From Chemistry of the Retinoid (Visual) Cycle (2014) · cites this paper as [345]

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  1. Jastrzebska B Orban T Golczak M Engel A Palczewski K 2012 Asymmetry of the rhodopsin dimer in complex with transducin FASEB J submitted PMC3606538 23303210

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Authors
Jastrzebska, B., Ringler, P., Palczewski, K., & Engel, A.
Affiliations
  • University of Basel (CH)
  • Case Western Reserve University (US)
Corresponding author
  • Palczewski, Krzysztof
  • Engel, Andreas
Venue
Journal of Structural Biology
Publisher
Elsevier BV
Published
2013-05
Volume
182
Issue
2
Pages
164-172
ISSN
1047-8477 (ISSN-L)
OpenAlex
W2105192362
Cited by
42
References
57
Citations by year
2026: 1 · 2022: 2 · 2021: 1 · 2019: 2 · 2018: 2 · 2017: 4 · 2016: 5 · 2015: 5 · 2014: 7 · 2013: 13
FWCI
4.48
Type
journal article
Language
en
Open access
Locations
  • Journal of Structural Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • edoc (University of Basel) (submittedVersion)
Funders
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (3100A0-108299)
  • National Institutes of Health (EY019478, EY008061, U54GM094598)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Photoreceptor and optogenetics research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
Keywords
rhodopsin, transducin, G protein activation, pentameric complex, retinal isomerization, detergent solubilization, concanavalin A binding
MeSH terms
Chromatography, Affinity, Chromatography, Gel, Concanavalin A, Glucosides, Models, Molecular, Protein Conformation, Rhodopsin, Immunoblotting, Transducin, Dimerization, Macromolecular Substances

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