Evidence map›Paper›PMID 27851937›Full record

ArticleBiophysical journal2016

Bacteriophytochrome Photoisomerization Proceeds Homogeneously Despite Heterogeneity in Ground State.

Cheng Wang, Moira L Flanagan, Ryan D McGillicuddy, Haibin Zheng, Alan Ruvim Ginzburg, Xiaojing Yang, Keith Moffat, Gregory S Engel

Abstract read
In one paragraph

Article in Biophysical journal, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
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

17 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Ultrafast Photoconversion Dynamics of the Knotless PhytochromeInternational journal of molecular sciences · 2021
    Article
  6. Article
  7. Effect of the PHY Domain on the Photoisomerization Step of the Forward PChemistry (Weinheim an der Bergstrasse, Germany) · 2020
    Article
  8. Article
  9. Revealing the origin of multiphasic dynamic behaviors in cyanobacteriochrome.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  10. Article
  11. The interplay between chromophore and protein determines the extended excited state dynamics in a single-domain phytochrome.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Cheng WangDepartment of Chemistry, The James Franck Institute, Institute for Biophysical Dyanmics, The University of Chicago, Chicago, Illinois.
Moira L FlanaganGraduate Program in Biophysical Science, The James Franck Institute, Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois.
Ryan D McGillicuddyDepartment of Chemistry, The James Franck Institute, Institute for Biophysical Dyanmics, The University of Chicago, Chicago, Illinois.
Haibin ZhengDepartment of Chemistry, The James Franck Institute, Institute for Biophysical Dyanmics, The University of Chicago, Chicago, Illinois.
Alan Ruvim GinzburgDepartment of Chemistry, The James Franck Institute, Institute for Biophysical Dyanmics, The University of Chicago, Chicago, Illinois.
Xiaojing YangDepartment of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois.
Keith MoffatDepartment of Biochemistry and Molecular Biology, and Institute for Biophysical Dynamics, The University of Chicago, Chicago, Illinois.
Gregory S EngelDepartment of Chemistry, The James Franck Institute, Institute for Biophysical Dyanmics, The University of Chicago, Chicago, Illinois. Electronic address: gsengel@uchicago.edu.

Funding

Graduate Program in Biophysical Sciences at the University of Chicago - Renewal 0T32EB009412 · NIBIB · UNIVERSITY OF CHICAGO · PI ENGEL, GREGORY S, SOSNICK, TOBIN R · 2009 to 2023
$4.9M
Structures, Dynamics and Signaling Mechanisms of Modular PhotoreceptorsR01EY024363 · NEI · UNIVERSITY OF ILLINOIS AT CHICAGO · PI YANG, XIAOJING · 2014 to 2021
$2.9M
NEI NIH HHS R01 EY024363NIBIB NIH HHS T32 EB009412
6 · The paper itself

Abstract

Phytochromes are red/far-red photoreceptors that are widely distributed in plants and prokaryotes. Ultrafast photoisomerization of a double bond in a biliverdin cofactor or other linear tetrapyrrole drives their photoactivity, but their photodynamics are only partially understood. Multiexponential dynamics were observed in previous ultrafast spectroscopic studies and were attributed to heterogeneous populations of the pigment-protein complex. In this work, two-dimensional photon echo spectroscopy was applied to study dynamics of the bacteriophytochromes RpBphP2 and PaBphP. Two-dimensional photon echo spectroscopy can simultaneously resolve inhomogeneity in ensembles and fast dynamics by correlating pump wavelength with the emitted signal wavelength. The distribution of absorption and emission energies within the same state indicates an ensemble of heterogeneous protein environments that are spectroscopically distinct. However, the lifetimes of the dynamics are uniform across the ensemble, suggesting a homogeneous model involving sequential intermediates for the initial photodynamics of isomerization.

Indexed as

Photochemical ProcessesIsomerismPhytochromePhytochrome

Identifiers

PMID27851937
PMCPMC5113153

What OpenQuestion holds

Textmetadata
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.