Nathan Nelson
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View article: Investigating the Balance between Structural Conservation and Functional Flexibility in Photosystem I
Investigating the Balance between Structural Conservation and Functional Flexibility in Photosystem I Open
Photosynthesis, as the primary source of energy for all life forms, plays a crucial role in maintaining the global balance of energy, entropy, and enthalpy in living organisms. Among its various building blocks, photosystem I (PSI) is resp…
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s Corporate Citizenship initiative seeks to address the environmental, social, economic, and ethical challenges faced in our business and which are important to our diverse stakeholder groups.Since launching the initiative, we have focused…
View article: Structure of native photosystem II assembly intermediate from Chlamydomonas reinhardtii
Structure of native photosystem II assembly intermediate from Chlamydomonas reinhardtii Open
Chlamydomonas reinhardtii Photosystem II (PSII) is a dimer consisting of at least 13 nuclear-encoded and four chloroplast-encoded protein subunits that collectively function as a sunlight-driven oxidoreductase. In this study, we present th…
View article: Coupling and Slips in Photosynthetic Reactions—From Femtoseconds to Eons
Coupling and Slips in Photosynthetic Reactions—From Femtoseconds to Eons Open
Photosynthesis stands as a unique biological phenomenon that can be comprehensively explored across a wide spectrum, from femtoseconds to eons. Across each timespan, a delicate interplay exists between coupling and inherent deviations that…
View article: Structure of Chlorella ohadii Photosystem II Reveals Protective Mechanisms against Environmental Stress
Structure of Chlorella ohadii Photosystem II Reveals Protective Mechanisms against Environmental Stress Open
Green alga Chlorella ohadii is known for its ability to carry out photosynthesis under harsh conditions. Using cryogenic electron microscopy (cryoEM), we obtained a high-resolution structure of PSII at 2.72 Å. This structure revealed 64 su…
View article: Structure of Photosystem I Supercomplex Isolated from a Chlamydomonas reinhardtii Cytochrome b6f Temperature-Sensitive Mutant
Structure of Photosystem I Supercomplex Isolated from a Chlamydomonas reinhardtii Cytochrome b6f Temperature-Sensitive Mutant Open
The unicellular green alga, Chlamydomonas reinhardtii, has been widely used as a model system to study photosynthesis. Its possibility to generate and analyze specific mutants has made it an excellent tool for mechanistic and biogenesis st…
View article: Structure of Dunaliella photosystem II reveals conformational flexibility of stacked and unstacked supercomplexes
Structure of Dunaliella photosystem II reveals conformational flexibility of stacked and unstacked supercomplexes Open
Photosystem II (PSII) generates an oxidant whose redox potential is high enough to enable water oxidation , a substrate so abundant that it assures a practically unlimited electron source for life on earth . Our knowledge on the mechanism …
View article: Structure of plant Photosystem I in a native assembly state
Structure of plant Photosystem I in a native assembly state Open
Plant Photosystem I (PSI) consists of at least 13 nuclear-encoded and four chloroplast-encoded protein subunits, acting as a sunlight-driven oxidoreductase. Here, we report the first structure of PSI assembly intermediate isolated from gre…
View article: Comparison of thoracic ultrasonography and thoracic radiography between healthy adult horses and horses with bacterial pneumonia using a novel, objective ultrasonographic scoring system
Comparison of thoracic ultrasonography and thoracic radiography between healthy adult horses and horses with bacterial pneumonia using a novel, objective ultrasonographic scoring system Open
Background Thoracic ultrasonography (TUS) is widely used in equine practice but comparison to radiography is limited in horses. Objectives To validate a novel, objective scoring system for TUS in adult horses and to compare ultrasonographi…
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US$1,501 (Rest of World), €976 (Europe), £769 (UK)
View article: The Blue Earth Project: “Is Humanity Settling its own Fate on Ecological Survival?”
The Blue Earth Project: “Is Humanity Settling its own Fate on Ecological Survival?” Open
This is a report from NoRCELs Blue Earth Project symposium BEP2022 held online on January 8th, 2022. We are reporting the outcome pertaining to the following question: Is Humanity Settling its own Fate on Ecological Survival? A succinct co…
View article: Structure of <i>Dunaliella</i> Photosystem II reveals conformational flexibility of stacked and unstacked supercomplexes
Structure of <i>Dunaliella</i> Photosystem II reveals conformational flexibility of stacked and unstacked supercomplexes Open
Photosystem II (PSII) generates an oxidant whose redox potential is high enough to enable water oxidation 1,2 , a substrate so abundant that it assures a practically unlimited electron source for life on earth 3 . Our knowledge on the mech…
View article: Two-Dimensional Electronic Spectroscopy of a Minimal Photosystem I Complex Reveals the Rate of Primary Charge Separation
Two-Dimensional Electronic Spectroscopy of a Minimal Photosystem I Complex Reveals the Rate of Primary Charge Separation Open
Photosystem I (PSI), found in all oxygenic photosynthetic organisms, uses solar energy to drive electron transport with nearly 100% quantum efficiency, thanks to fast energy transfer among antenna chlorophylls and charge separation in the …
View article: Structure of plant photosystem I-plastocyanin complex reveals strong hydrophobic interactions
Structure of plant photosystem I-plastocyanin complex reveals strong hydrophobic interactions Open
Photosystem I is defined as plastocyanin-ferredoxin oxidoreductase. Taking advantage of genetic engineering, kinetic analyses and cryo-EM, our data provide novel mechanistic insights into binding and electron transfer between PSI and Pc. S…
View article: Excitation energy transfer kinetics of trimeric, monomeric and subunit-depleted Photosystem I from Synechocystis PCC 6803
Excitation energy transfer kinetics of trimeric, monomeric and subunit-depleted Photosystem I from Synechocystis PCC 6803 Open
Photosystem I is the most efficient photosynthetic enzyme with structure and composition highly conserved among all oxygenic phototrophs. Cyanobacterial Photosystem I is typically associated into trimers for reasons that are still debated.…
View article: Structure of plant PSI-plastocyanin complex reveals strong hydrophobic interactions
Structure of plant PSI-plastocyanin complex reveals strong hydrophobic interactions Open
Photosystem I is defined as plastocyanin-ferredoxin oxidoreductase. Taking advantage of genetic engineering, kinetic analyses and cryo-EM, our data provide novel mechanistic insights into binding and electron transfer between PSI and Pc. S…
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1,085 (US), US$1,623 (Rest of World), €1,053 (Europe), £830 (UK)
View article: Crystal Structure of Photosystem I Monomer From Synechocystis PCC 6803
Crystal Structure of Photosystem I Monomer From Synechocystis PCC 6803 Open
A single histidine addition to the C-terminus of PsaL of Synechocystis sp. PCC 6803 was previously reported by our lab to shift the trimer-to-monomer ratio of PSI in favor of the monomeric form. P700 re-reduction and NADP+ photo-reduction …
View article: Monomeric cyanobacterial photosystem I
Monomeric cyanobacterial photosystem I Open
A single histidine addition to the C-terminus of PsaL of Synechocystis sp. PCC 6803 was previously reported by our lab to shift the trimer-to-monomer ratio of PSI in favor of the monomeric form. P700 re-reduction and NADP+ photo-reduction …
View article: Temperature-sensitive PSII: a novel approach for sustained photosynthetic hydrogen production
Temperature-sensitive PSII: a novel approach for sustained photosynthetic hydrogen production Open
The need for energy and the associated burden are ever growing. It is crucial to develop new technologies for generating clean and efficient energy for society to avoid upcoming energetic and environmental crises. Sunlight is the most abun…