Results 61 to 70 of about 33,070 (223)

Thiol post‐translational modifications modulate allosteric regulation of the OpcA–G6PDH complex through conformational gate control

open access: yesProtein Science, Volume 35, Issue 5, May 2026.
Abstract In cyanobacteria, the redox‐sensitive protein OpcA acts as a metabolic switch for G6PDH, enabling rapid adjustment of reducing power generation from glycogen catabolism and thereby precisely regulating carbon flux between anabolic and catabolic pathways.
Hoshin Kim   +7 more
wiley   +1 more source

ZZE-Configuration of chromophore ß-153 in C-phycocyanin from Mastigocladus laminosus [PDF]

open access: yes, 1987
The photochemistry of C-phycocyanin has been studied after denaturation in the dark. It shows an irreversible reaction which has characteristics of a Ζ,Ζ,Ε- to Z,Z,Z-isomerization of dihydrobilins. Its amplitude depends on the reaction conditions, with
Bode, W.   +7 more
core   +1 more source

Putative Analogs of Pyrite Suns Forming in Proglacial Alaska Mudflats

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Disc‐shaped pyrite suns of the Pennsylvanian age Anna Shale are thought to have formed where pressure restricted pyrite crystal growth to a flattened disc shape during diagenesis at the Anna Shale and the underlying Herrin coal boundary.
Heather L. Fair   +2 more
wiley   +1 more source

Functional Diversity of TonB-Like Proteins in the Heterocyst-Forming Cyanobacterium Anabaena sp. PCC 7120

open access: yesmSphere, 2021
The TonB-dependent transport of scarcely available substrates across the outer membrane is a conserved feature in Gram-negative bacteria. The plasma membrane-embedded TonB-ExbB-ExbD accomplishes complex functions as an energy transducer by physically ...
Hannah Schätzle   +5 more
doaj   +1 more source

Photoreactions and Structural Changes of Anabaena Sensory Rhodopsin [PDF]

open access: yesSensors, 2009
Anabaena sensory rhodopsin (ASR) is an archaeal-type rhodopsin found in eubacteria. The gene encoding ASR forms a single operon with ASRT (ASR transducer) which is a 14 kDa soluble protein, suggesting that ASR functions as a photochromic sensor by activating the soluble transducer. This article reviews the detailed photoreaction processes of ASR, which
Akira Kawanabe, Hideki Kandori
openaire   +3 more sources

Cyt c6-3: A new isoform of photosynthetic Cyt c6 exclusive to heterocyst-forming cyanobacteria [PDF]

open access: yes, 2017
All known cyanobacteria contain Cyt c6, a small soluble electron carrier protein whose main function is to transfer electrons from the Cyt b6 f complex to PSI, although it is also involved in respiration.
Hervás Morón, Manuel   +5 more
core   +1 more source

Effect of Anabaena sp. PCC7120 on the Tolerance of Rice ( Oryza sativa L. cv Maratelli) Seedlings Against Lindane

open access: yesLand Degradation &Development, Volume 37, Issue 7, Page 2873-2885, 30 April 2026.
ABSTRACT Lindane (γ‐hexachlorocyclohexane, γ‐HCH) is a broad‐spectrum pesticide widely used since the 1950s until its inclusion in the Stockholm Convention list of Persistent Organic Pollutants (POPs) in 2009, together with other HCH isomers. The high persistence and mismanagement of the toxic wastes generated during its synthesis have led to serious ...
Giuliana Oriana Morabito   +4 more
wiley   +1 more source

Cyanobacterial inoculation elicits plant defense response and enhanced Zn mobilization in maize hybrids

open access: yesCogent Food & Agriculture, 2015
The present investigation evaluated the effect of inoculating different cyanobacterial formulations on a set of hybrids of maize, in terms of plant defense enzyme activity, soil health parameters, Zn concentration, and yields.
Radha Prasanna   +5 more
doaj   +1 more source

A Bifunctional Protease Cleaves the Leader Peptide in the Biosynthesis of Class I Microviridins

open access: yesChemBioChem, Volume 27, Issue 7, 14 April 2026.
Biochemical characterization of the peptidase candidate NosP reveals bifunctional endo‐ and aminopeptidase activity in the leader peptide removal of class I microviridins from Nostoc punctiforme. The discovery of the first leader‐processing peptidase from microviridin biosynthesis may pave the way for the efficient production and bioengineering of ...
Nico Brüssow   +7 more
wiley   +1 more source

Global translational control by the transcriptional repressor TrcR in the filamentous cyanobacterium Anabaena sp. PCC 7120

open access: yesCommunications Biology, 2023
Transcriptional and translational regulations are important mechanisms for cell adaptation to environmental conditions. In addition to house-keeping tRNAs, the genome of the filamentous cyanobacterium Anabaena sp.
Zi-Qian Wang   +4 more
doaj   +1 more source

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