Results 51 to 60 of about 31,068 (228)

PHOTOCHEMISTRY OF PHYCOBILIPROTEINS [PDF]

, 1989
Native PEC from the cyanobacterium, Mastigocladus laminosus, and its isolated α-subunit show photoreversibly photochromic reactions with difference-maxima around 502 and 570 nm in the spectral region of the α-84 phycoviolobilin chromophore.
Bjorn L. O., Bjorn L. O., Braslavsky S. E., Braune W., Bryant D. A., Bryant D. A., DeKok J., Falk H., Gantt E., Holzwarth A., John W., Kufer W., Kufer W., MacColl R., Martin R. G., Murakami A., Ohki K., Ohki K., Oliad I., Riidiger W., Rumbeli R., Scheer H., Scheer H., Scheer H., Schmidt G., Schneider S., Song P. S., Tandeau de Marsac N., Wehrmeyer W., Zuber H.   +29 more
core   +1 more source

Supplemental Far-red Light-emitting Diode Light Increases Growth of Foxglove Seedlings Under Sole-source Lighting

HortTechnology, 2020
Seedlings may be grown indoors where environmental conditions can be precisely controlled to ensure consistent and reliable production. The optimal spectrum for production under sole-source lighting is currently unknown.
Claudia Elkins , Marc W. van Iersel
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Phytochrome A Regulates Carbon Flux in Dark Grown Tomato Seedlings

Frontiers in Plant Science, 2019
Phytochromes comprise a small family of photoreceptors with which plants gather environmental information that they use to make developmental decisions, from germination to photomorphogenesis to fruit development.
Keisha D. Carlson, Sneha Bhogale, Drew Anderson, Lars Tomanek, Andreas Madlung   +4 more
doaj   +1 more source

An Engineered Living Material With Pro‐Angiogenic Activity Inducible by Near‐Infrared Light

Advanced Functional Materials, EarlyView.
NIR‐responsive engineered living materials (ELMs) for controlled angiogenesis: Near‐infrared (800 nm) light activates engineered probiotic bacteria within alginate‐based living materials to secrete a blood vessel‐regenerating protein. The released protein promotes pro‐angiogenic effects in endothelial networks and chick chorioallantoic membranes.
Anwesha Chatterjee, Stefanie S. M. Meier, Sara Trujillo, Andreas Möglich, Shrikrishnan Sankaran   +4 more
wiley   +1 more source

Evidence that phytochrome functions as a protein kinase in plant light signalling

Nature Communications, 2016
Phytochromes regulate plant responses to environmental light conditions but despite extensive research the initial events in phytochrome signaling remain uncertain. Here, Shin et al.
Ah-Young Shin, Yun-Jeong Han, Ayoung Baek, Taeho Ahn, Soo Young Kim, Thai Son Nguyen, Minky Son, Keun Woo Lee, Yu Shen, Pill-Soon Song, Jeong-Il Kim   +10 more
doaj   +1 more source

Divergent Regulatory Effects of Jasmonic Acid on Tomato Lycopene Biosynthesis Under Light and Dark Conditions

Advanced Science, EarlyView.
This study reveals the mechanism by which jasmonic acid (JA) regulates lycopene synthesis under light and dark conditions. In light, JA activates SlMYC2, which suppresses SlPIF1a and promotes SlPSY1 expression. In darkness, JA induces the acetyltransferase SlNATA1, which acetylates the dark‐accumulated SlPIF1a, thereby repressing SlPSY1 expression ...
Jiayi Xu, Lingfeng He, Jialong Zhang, Hao Cui, Hongxin Li, Haijun Zhang, Jiaojiao Zhang, Lun Liu, Kunpeng Xu, Yang‐Dong Guo, Na Zhang   +10 more
wiley   +1 more source

Role of Phytochromes in Red Light-Regulated Alternative Splicing in Arabidopsis thaliana: Impactful but Not Indispensable

Cells, 2023
Light is both the main source of energy and a key environmental signal for plants. It regulates not only gene expression but also the tightly related processes of splicing and alternative splicing (AS).
Daniel Alejandro Careno, Constanza Helena Assaf, Eline Dieuwerke Catharina Eggermont, Micaela Canelo, Pablo Diego Cerdán, Marcelo Javier Yanovsky   +5 more
doaj   +1 more source

A red/far-red light-responsive bi-stable toggle switch to control gene expression in mammalian cells [PDF]

, 2013
Growth and differentiation of multicellular systems is orchestrated by spatially restricted gene expression programs in specialized subpopulations. The targeted manipulation of such processes by synthetic tools with high-spatiotemporal resolution could ...
Busacker, Moritz, Engesser, Raphael, Kämpf, Michael M., Metzger, Stéphanie, Müller, Konrad, Nagy, Ferenc István   +5 more
core   +1 more source

Single GAF Domain Phytochrome Exhibits a pH‐Dependent Shunt on the Millisecond Timescale

ChemPhysChem, Volume 26, Issue 6, March 15, 2025.
During their light‐induced photocycle, phytochromes can engage in a thermal reversion back to the initially excited state, denoted as a shunt. This study investigates a pH‐dependent shunt transition in the Pfr state of the All2699g1 phytochrome from Nostoc punctiforme using UV/Vis laser flash photolysis and kinetic modeling. The findings suggest a keto‐
Florian Trunk, Lisa Köhler, Tobias Fischer, Wolfgang Gärtner, Chen Song, Chavdar Slavov, Josef Wachtveitl   +6 more
wiley   +1 more source