Evidence map›Paper›PMID 23831552›Full record

ReviewBiochimica et biophysica acta2014

Mechanism divergence in microbial rhodopsins.

John L Spudich, Oleg A Sineshchekov, Elena G Govorunova

Abstract readReview
In one paragraph

Review in Biochimica et biophysica acta, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
3.7field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 69 citations in OpenAlex.

  1. Article
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  6. KInternational journal of molecular sciences · 2023
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  14. Signal transduction in photoreceptor histidine kinases.Protein science : a publication of the Protein Society · 2019
    Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Molecular properties of a DTD channelrhodopsin fromBiophysics and physicobiology · 2017
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

John L SpudichCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, University of Texas Medical School, 6431 Fannin St., MSB6.130, Houston, TX 77030, USA. Electronic address: john.l.spudich@uth.tmc.edu.
Oleg A SineshchekovCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, University of Texas Medical School, 6431 Fannin St., MSB6.130, Houston, TX 77030, USA.
Elena G GovorunovaCenter for Membrane Biology, Department of Biochemistry and Molecular Biology, University of Texas Medical School, 6431 Fannin St., MSB6.130, Houston, TX 77030, USA.
The University of Texas Health Science Center at Houston · US

Funding

Structure/Function of Microbial Sensory RhodopsinsR01GM027750 · NIGMS · YESHIVA UNIVERSITY · PI SPUDICH, JOHN LEE · 1985 to 2020
$6.6M
Channelrhodopsin-Calcium Channel Complexes for Ultrasensitive OptogeneticsR21MH098288 · NIMH · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI SINESHCHEKOV, OLEG A, SPUDICH, JOHN LEE · 2012 to 2013
$410k
NIGMS NIH HHS R01 GM027750NIGMS NIH HHS R01GM027750NIMH NIH HHS R21 MH098288NIMH NIH HHS R21MH098288
6 · The paper itself

Abstract

A fundamental design principle of microbial rhodopsins is that they share the same basic light-induced conversion between two conformers. Alternate access of the Schiff base to the outside and to the cytoplasm in the outwardly open "E" conformer and cytoplasmically open "C" conformer, respectively, combined with appropriate timing of pKa changes controlling Schiff base proton release and uptake make the proton path through the pumps vectorial. Phototaxis receptors in prokaryotes, sensory rhodopsins I and II, have evolved new chemical processes not found in their proton pump ancestors, to alter the consequences of the conformational change or modify the change itself. Like proton pumps, sensory rhodopsin II undergoes a photoinduced E→C transition, with the C conformer a transient intermediate in the photocycle. In contrast, one light-sensor (sensory rhodopsin I bound to its transducer HtrI) exists in the dark as the C conformer and undergoes a light-induced C→E transition, with the E conformer a transient photocycle intermediate. Current results indicate that algal phototaxis receptors channelrhodopsins undergo redirected Schiff base proton transfers and a modified E→C transition which, contrary to the proton pumps and other sensory rhodopsins, is not accompanied by the closure of the external half-channel. The article will review our current understanding of how the shared basic structure and chemistry of microbial rhodopsins have been modified during evolution to create diverse molecular functions: light-driven ion transport and photosensory signaling by protein-protein interaction and light-gated ion channel activity. This article is part of a Special Issue entitled: Retinal Proteins - You can teach an old dog new tricks.

Indexed as

ProtonsArchaeaBacteriorhodopsinsChlorophytaEuryarchaeotaHalorhodopsinsIon Channel GatingIon TransportLightLight Signal TransductionModels, MolecularProtein ConformationSchiff BasesSensory RhodopsinsBacteriorhodopsinsHalorhodopsinsProtonsSchiff BasesSensory RhodopsinsMicrobial rhodopsinsOptogeneticsPhotosensory transductionPhototaxisProton transferSchiff base connectivity

Identifiers

PMID23831552
PMCPMC3844102
OpenAlexW2117387235

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.