Results 51 to 60 of about 3,393,576 (163)

A Comparison of Three Protein Sources Used in Medium-Sized Litopenaeus vannamei: Effects on Growth, Immunity, Intestinal Digestive Enzyme Activity, and Microbiota Structure

Fishes, 2023
The type of protein source in diets has many effects on shrimp. In this study, Litopenaeus vannamei with an initial body weight of 3.68 ± 0.002 g were fed for 8 weeks on three experimental diets (isoproteic: 41.00%; isolipidic: 7.61%) that were ...
Hang Yuan, Naijie Hu, Yudong Zheng, Cuihong Hou, Beiping Tan, Lili Shi, Shuang Zhang   +6 more
doaj   +1 more source

A Conserved Isoleucine Gates the Diffusion of CO and O2 to the Active Site of NiFe CO‐Dehydrogenase

Angewandte Chemie International Edition, EarlyView.
A combination of protein film electrochemistry and site‐directed mutagenesis shows that isoleucine 563 (numbering of Thermococcus sp. AM4) gates the arrival of both CO and O2 to the active site of the nickel‐iron CO dehydrogenases. Mutations at this position increase the resistance to O2 at the cost of a slower reaction with CO.
Laura Opdam, Marta Meneghello, Chloé Guendon, Jade Chargelègue, Andrea Fasano, Aurore Jacq‐Bailly, Christophe Léger, Vincent Fourmond   +7 more
wiley   +1 more source

Fortification of FeS Clusters Reshapes Anaerobic CO Dehydrogenase into an Air‐Viable Enzyme Through Multilayered Sealing of O2 Tunnels

Angewandte Chemie, Volume 137, Issue 33, August 11, 2025.
Fortification of FeS clusters in Ni─Fe CO dehydrogenase (Carboxydothermus hydrogenoformans) reshapes this anaerobic enzyme into an air‐viable variant through multilayered O2 tunnel sealing. The engineered enzyme retains structural integrity and catalytic efficiency in ambient air, offering a practical solution for industrial CO/CO2 bioconversion ...
Suk Min Kim, So Yeon Kong, Jingu Kang, Jeong Seok Ji, Sung Heuck Kang, Hye‐Jin Yoon, Hyunwoo Kim, Jungki Ryu, Hyung Ho Lee, Yong Hwan Kim   +9 more
wiley   +2 more sources

A TetR-Family Protein (CAETHG_0459) Activates Transcription From a New Promoter Motif Associated With Essential Genes for Autotrophic Growth in Acetogens

Frontiers in Microbiology, 2019
Acetogens can fix carbon (CO or CO2) into acetyl-CoA via the Wood–Ljungdahl pathway (WLP) that also makes them attractive cell factories for the production of fuels and chemicals from waste feedstocks.
Renato de Souza Pinto Lemgruber, Kaspar Valgepea, Kaspar Valgepea, Ricardo Axayacatl Gonzalez Garcia, Christopher de Bakker, Robin William Palfreyman, Robin William Palfreyman, Ryan Tappel, Michael Köpke, Séan Dennis Simpson, Lars Keld Nielsen, Esteban Marcellin, Esteban Marcellin   +12 more
doaj   +1 more source

Deletion of genes linked to the C1-fixing gene cluster affects growth, by-products, and proteome of Clostridium autoethanogenum

Frontiers in Bioengineering and Biotechnology, 2023
Gas fermentation has emerged as a sustainable route to produce fuels and chemicals by recycling inexpensive one-carbon (C1) feedstocks from gaseous and solid waste using gas-fermenting microbes.
Ugochi Jennifer Nwaokorie, Kristina Reinmets, Lorena Azevedo de Lima, Pratik Rajendra Pawar, Kurshedaktar Majibullah Shaikh, Audrey Harris, Michael Köpke, Kaspar Valgepea   +7 more
doaj   +1 more source

Abalone Gut Microbiome Regulators: A Review Synthesizing Gut Physiology, Microorganisms, Diet and the Environment

Aquaculture, Fish and Fisheries, Volume 6, Issue 4, August 2026.
ABSTRACT Abalone are economically, ecologically and culturally significant marine molluscs, with both wild and farmed populations under pressure due to intrinsic and extrinsic stressors. Abalone performance and health are centred on a highly specialized digestive system supported by a diverse gut microbiome, which enables nutrient assimilation ...
Jinchen Guo, Leonie Venter, Donnabella C. Lacap‐Bugler, Andrea C. Alfaro   +3 more
wiley   +1 more source

Perspectives for Advancing Biotechnological Succinic Acid Production

Microbial Biotechnology, Volume 19, Issue 5, May 2026.
Succinic acid is an important molecule for sustainable chemical manufacturing, but its industrial production faces high costs and sustainability challenges, which are linked to feedstocks and excessive acid/base consumption. This opinion explores production routes based on next‐generation feedstocks and low‐pH fermentations to inspire novel cost ...
Christoph Gunkel, Bastian Blombach
wiley   +1 more source

Emerging Technologies for Biobutanol Production via Syngas Fermentation

GCB Bioenergy, Volume 18, Issue 5, May 2026.
Biobutanol production from syngas is promising but limited by microbial energy conservation and gas–liquid mass transfer. This review integrates advances in cultivation control and bioreactor engineering with next‐generation biological tools including metabolic rewiring, co‐cultivation and chain elongation, and electro‐fermentation to enable carbon ...
Xuemei Wang, Luiza C. Campos, Zifu Li, Werner Fuchs   +3 more
wiley   +1 more source

B-vitamin requirements of Clostridium autoethanogenum [PDF]

Vitamins are micronutrients essential for life in an organism which must be obtained from diet or environment. Standard media often contains ten B-vitamins, which act as cofactors or precursors for co-enzymes.
Annan, F.J.
core   +3 more sources

Careful CO Addition Enhances Autotrophic d‐Lactate Formation With Engineered Acetobacterium woodii

Engineering in Life Sciences, Volume 26, Issue 2, February 2026.
ABSTRACT The acetogen A. woodii efficiently converts CO2 and H2 to acetate. Metabolic engineering enabled the autotrophic production of non‐native products, for example, d‐lactate from CO2 by overexpression of d‐lactate dehydrogenase from Leuconostoc mesenteroides and knockout of the native lactate dehydrogenase. During gas fermentation with acetogens,
Anna Stock, Inka Sotzeck, Kira Baur, Frank Bengelsdorf, Dirk Weuster‐Botz   +4 more
wiley   +1 more source