Results 41 to 50 of about 462,385 (285)

Simultaneous determination of several forms of phosphate in food by ion exchange chromatography

Tạp chí Kiểm nghiệm và An toàn thực phẩm
The phosphate group is a group of food additives commonly used for moisturizing, improving the structure, and retaining the color and flavor of products prepared from meat, fish, milk, baked goods, and beverages.
Do Thi Hong Thuy, Nguyen Nhu Thuong, Vu Thi Trang, Le Thi Hong Hao, Le Thi Thuy, Le Viet Ngan, Luu Thi Huyen Trang, Cao Cong Khanh, Dinh Viet Chien, Le Thi Phuong Thao, Nguyen Thi Anh Huong   +10 more
doaj   +1 more source

Formation of dimers in refolding of recombinant human interferon-γ by ion-exchange chromatography

浙江大学学报. 农业与生命科学版, 2006
The refolding process was performed by gradually decreasing the concentration of urea in the buffer after the denatured rhIFN-γ proteins had been bound onto the ion-exchange gel SP Sepharose Fast Flow.
JIN Ting, GUAN Yi-xin, YAO Shan-jing
doaj   +1 more source

A yeast model of 5‐oxoproline accumulation reveals a general toleration to 5‐oxoproline

FEBS Open Bio, EarlyView.
Using a yeast model, we show that even high accumulation of 5‐oxoproline causes only mild cellular stress and does not trigger oxidative stress. Instead, cells adapt by activating efflux pumps and diverse protective pathways, suggesting that previously proposed harmful effects of 5‐oxoproline may arise from indirect metabolic imbalances rather than the
Pratiksha Dubey, Vaishnavi Sanjayan, Praveen Singh, Shantanu Sengupta, Anand Kumar Bachhawat   +4 more
wiley   +1 more source

The crystal structure of the Borrelia burgdorferi nicotinamidase BBE22 resolves a long‐standing annotation error

FEBS Open Bio, EarlyView.
The crystal structure of Borrelia burgdorferi nicotinamidase (PncA/BBE22) reveals the correct full‐length protein initiated from a non‐canonical AUU start codon. The structure validates previous biochemical findings and resolves a long‐standing annotation error, demonstrating that the truncated database sequence is structurally incompatible with the ...
Kalvis Brangulis
wiley   +1 more source

A method for suppressing pH excursion during elution in ion-exchange chromatography

Journal of Chromatography Open
A simple method for reducing pH excursion during salt-induced elution in cation exchange chromatography is presented in this paper. Connecting a preequilibrated anion exchange cartridge in series in front of the cation exchange device just prior to the ...
Raja Ghosh
doaj   +1 more source

Extraction and Purification of Lactoferrin from Camel Milk and Investigation of Its Amylase Activity

Journal of Mazandaran University of Medical Sciences, 2022
Background and purpose: Lactoferrin is found in mucus, milk, and colostrum secretions and has antimicrobial activities, improves iron absorption, and enhances immune responses. Lactoferrin has the ability to degrade starch.
Saeed Zibaei, Anis Bakhshani, Ali Bidmeshkipour   +2 more
doaj  

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source

Ion-exchange purification and structural characterization of five sulfated fucoidans from brown algae

Glycobiology, 2020
Fucoidans are a diverse class of sulfated polysaccharides integral to the cell wall of brown algae, and due to their various bioactivities, they are potential drugs. Standardized work with fucoidans is required for structure–function studies, but remains
Andreas Sichert, S. Le Gall, L. Klau, B. Laillet, H. Rogniaux, F. Aachmann, J. Hehemann   +6 more
semanticscholar   +1 more source

Structural studies and functional engineering of NanX: an anhydro‐sialic acid transporter from Escherichia coli

FEBS Open Bio, EarlyView.
Biophysical characterisation shows that NanX, a membrane transport protein from the major facilitator superfamily (MFS), forms both monomers and dimers after purification. AlphaFold modelling and substrate docking provide information on residues likely involved in substrate recognition for NanX and another MFS member, NanT.
Michael C. Newton‐Vesty, Kelsi R. Hall, Zachary D. Tillett, Liam S. Turk, James S. Davies, Michael J. Currie, Hamish G. Brown, Sepideh Valimehr, Peter D. Mace, Andrew E. Whitten, Santosh Panjikar, Eric Hanssen, Rachel A. North, Renwick C.J. Dobson   +13 more
wiley   +1 more source

Analysis of metabolic profiles of bile acids in urine using a lipophilic anion exchanger and computerized gas-liquid chromatorgaphy-mass spectrometry

Journal of Lipid Research, 1977
A method is described for quantitative analysis of bile acids in urine. Urine is acidified and bile acids are extracted on an Amberlite XAD-2 column.
B Almé, A Bremmelgaard, J Sjövall, P Thomassen   +3 more
doaj   +1 more source