Signal transduction in photoreceptor histidine kinases

A Möglich - Protein science, 2019 - Wiley Online Library
Two‐component systems (TCS) constitute the predominant means by which prokaryotes
read out and adapt to their environment. Canonical TCSs comprise a sensor histidine kinase …

A guide to time‐resolved structural analysis of light‐activated proteins

H Poddar, DJ Heyes, G Schirò, M Weik… - The FEBS …, 2022 - Wiley Online Library
Dynamical changes in protein structures are essential for protein function and occur over
femtoseconds to seconds timescales. X‐ray free electron lasers have facilitated …

Individual and shared digital repertoires–older adults managing digital services

R Hänninen, L Pajula, V Korpela… - … Communication & Society, 2023 - Taylor & Francis
The rise of public and other non-recreational digital services is based on the idea of catering
to the daily needs of the citizens cost-efficiently and with ease. Previous research has …

Structural photoactivation of a full-length bacterial phytochrome

A Björling, O Berntsson, H Lehtivuori, H Takala… - Science …, 2016 - science.org
Phytochromes are light sensor proteins found in plants, bacteria, and fungi. They function by
converting a photon absorption event into a conformational signal that propagates from the …

Comparative analysis of two paradigm bacteriophytochromes reveals opposite functionalities in two-component signaling

E Multamäki, R Nanekar, D Morozov… - Nature …, 2021 - nature.com
Bacterial phytochrome photoreceptors usually belong to two-component signaling systems
which transmit environmental stimuli to a response regulator through a histidine kinase …

Photoreception and signaling in bacterial phytochrome revealed by single-particle cryo-EM

TN Malla, C Hernandez, S Muniyappan… - Science …, 2024 - science.org
Phytochromes are red-light photoreceptors discovered in plants with homologs in bacteria
and fungi that regulate a variety of physiological responses. They display a reversible …

Tips and turns of bacteriophytochrome photoactivation

H Takala, P Edlund, JA Ihalainen… - Photochemical & …, 2020 - pubs.rsc.org
Phytochromes are ubiquitous photosensor proteins, which control the growth, reproduction
and movement in plants, fungi and bacteria. Phytochromes switch between two …

Chromophore–protein interplay during the phytochrome photocycle revealed by step-scan FTIR spectroscopy

JA Ihalainen, E Gustavsson, L Schroeder… - Journal of the …, 2018 - ACS Publications
Phytochrome proteins regulate many photoresponses of plants and microorganisms. Light
absorption causes isomerization of the biliverdin chromophore, which triggers a series of …

Phytochrome diversification in cyanobacteria and eukaryotic algae

NC Rockwell, JC Lagarias - Current opinion in plant biology, 2017 - Elsevier
Highlights•Recent structural studies identify intramolecular signal propagation
mechanisms.•Recent transcriptomic studies illuminate the distribution of phytochrome in …

On the (un) coupling of the chromophore, tongue interactions, and overall conformation in a bacterial phytochrome

H Takala, HK Lehtivuori, O Berntsson, A Hughes… - Journal of Biological …, 2018 - ASBMB
Phytochromes are photoreceptors in plants, fungi, and various microorganisms and cycle
between metastable red light–absorbing (Pr) and far-red light–absorbing (Pfr) states. Their …