Results 51 to 60 of about 45,192 (224)

Overview of Encapsulated Lysine and Methionine and Their Impacts on Transition Cow Performance and Health

Animal Research and One Health, EarlyView.
The transition period in dairy cows, spanning 3 weeks before and after calving, is a critical phase characterized by increased nutrient demands, reduced dry matter intake (DMI), and elevated risk of metabolic disorders such as negative nutrient balance (NNB), lipolysis, proteolysis, and oxidative stress.
Mohammed S. Seleem, Samy A. Elsaadawy, Zhaohai Wu, Lu Ma, Todd R. Callaway, Dengpan Bu   +5 more
wiley   +1 more source

Export of honeybee prepromelittin in Escherichia coli depends on the membrane potential but does not depend on proteins secA and secY [PDF]

, 1989
Honeybee prepromelittin (70 amino acid residues), the precursor of an eukaryotic secretory protein, and a hybrid protein between prepromelittin and mouse dihydrofolate reductase (257 amino acid residues) were expressed in Escherichia coli and ...
Cobet, Werner W. E., Mollay, Christa, Müller, Günter, Zimmermann, Richard   +3 more
core  

Vibrational Structure of Dihydrofolate Bound to R67 Dihydrofolate Reductase [PDF]

Journal of Biological Chemistry, 2001
R67 is a Type II dihydrofolate reductase (DHFR) that catalyzes the reduction of dihydrofolate (DHF) to tetrahydrofolate by facilitating the addition of a proton to N5 of DHF and the transfer of a hydride ion from NADPH to C6. Because this enzyme is a plasmid-encoded DHFR from trimethoprim-resistant bacteria, extensive studies on R67 with various ...
H, Deng, R, Callender, E, Howell
openaire   +2 more sources

Inosine‐Triphosphate‐Pyrophosphatase Activity as a Potential Predictor of Methotrexate Remission in Juvenile Idiopathic Arthritis

Arthritis &Rheumatology, EarlyView.
Objective Methotrexate (MTX) is the first‐line therapy for juvenile idiopathic arthritis (JIA), but up to 40% of patients do not respond to it. Low inosine triphosphate pyrophosphatase (ITPA) activity has been associated with reduced clinical remission. We investigated the role and underlying mechanisms of ITPA in vitro. Methods ITPA enzymatic activity
Sofia Sindici Forgiarini, Marianna Lucafò, Debora Curci, Davide Selvestrel, Valentina Moressa, Sofia Pagarin, Barbara Bellich, Martina Franzin, Alberto Tommasini, Mara L. Becker, Laura B. Ramsey, Susan D. Thompson, Carl D. Langefeld, Federica Corba, Edoardo Marrani, Gabriele Simonini, Gabriele Stocco, Giuliana Decorti, Andrea Taddio, Serena Pastore   +19 more
wiley   +1 more source

Harnessing ferroptosis from multilayer defense networks to nanoplatforms for specific cancer therapy

BMEMat, EarlyView.
Nanomaterials target metabolically‐regulated ferroptosis for cancer therapy. Iron‐based or alternative nanoplatforms integrate ferroptosis with chemotherapy, immunotherapy, or radiotherapy. They enable stimulus‐responsive therapies (photothermal, photodynamic, sonodynamic) activated by near‐infrared, light, or ultrasound, achieving potent synergistic ...
Xinyue Xu, Xuejian Wang, Wenyan Jiang, Wan Hairul Anuar Kamaruddin, Chunyan Fang, Pengfei Zhang   +5 more
wiley   +1 more source

Type 2 antifolates in the chemotherapy of falciparum malaria

Journal of the Brazilian Chemical Society, 2002
About 40% of the world population is exposed to malaria, which results in the death of over 2 million people per year in Africa, Latin America, Southern Asia and Oceania.
Delfino Reinaldo T., Santos-Filho Osvaldo A., Figueroa-Villar José D.   +2 more
doaj  

Effect of Sunflower (Helianthus annuus L.) Seeds Treatment by Diode Laser Radiation in Seedlings and Calli Growth

مجلة مركز بحوث التقنيات الاحيائية, 2015
The effect of the exposure of sunflower (Helianthus annuus L.) seeds to red light laser radiation with 650 nm 50 mw/cm2 by diode laser in germination and growth of seedlings and calli had been studied.
Sara N. Ghanem Ghanem, Sajida A. Abood Abood   +1 more
doaj   +1 more source

Computer simulation of protein systems [PDF]

, 1984
Ligand binding to dihydrofolate reductase (DHFR) is discussed. This is an extremely important enzyme, as it is the target of several drugs (inhibitors) which are used clinically as antibacterials, antiprotozoals and in cancer chemotherapy. DHFR catalyzes
Dauber-Osguthorpe, P., Hagler, A. T., Kitson, D. H., Osguthorpe, D. J., Wolff, J.   +4 more
core   +1 more source

Loop Interactions during Catalysis by Dihydrofolate Reductase fromMoritella profunda [PDF]

, 2014
Dihydrofolate reductase (DHFR) is often used as a model system to study the relation between protein dynamics and catalysis. We have studied a number of variants of the cold-adapted DHFR from Moritella profunda (MpDHFR), in which the catalytically ...
Adamczyk A. J., Agarwal P. K., Allemann R. K., Bhabha G., Blakley R. L., Boehr D. D., Cameron C. E., Cayley P. J., E. Joel Loveridge, Enas M. Behiry, Evans R. M., Fan Y., Fierke C. A., Fuhrmann M., Gekko K., Gekko K., Guo J., Hammes-Schiffer S., Hay S., Jiannan Guo, Loveridge E. J., Loveridge E. J., Loveridge E. J., Loveridge E. J., Luk L. Y. P., Mauldin R. V., Mauldin R. V., Miller G. P., Oyeyemi O. A., Rajagopalan P. T. R., Rhiannon M. Evans, Rod T. H., Rudolf K. Allemann, Ruiz-Pernia J. J., Sawaya M. R., Stone S. R., Swanwick R. S., Swanwick R. S., Thorpe I. F., Venkitakrishnan R. P., Watney J. B., Xu Y.   +41 more
core   +1 more source

The power of many: when genetics met yeasts and high‐throughput

Biological Reviews, EarlyView.
ABSTRACT In recent years, complex technological capabilities have evolved, driven by the need to solve complex and integrative biological questions through global analyses. New equipment allows the scaling up and automation of processes which previously were carried out on a very limited scale.
Víctor A. Tallada, Víctor Carranco
wiley   +1 more source