Results 41 to 50 of about 8,618 (173)

An improved spectrophotometric assay for leucine aminopeptidase [PDF]

Biochemical Journal, 1987
A sensitive assay to determine the activity of leucine aminopeptidase (EC 3.4.11.1), using L-leucine thiobenzyl ester as substrate, was developed. Hydrolysis of the ester by leucine aminopeptidase can be monitored in the presence of 5,5-dithiobis-(2-nitrobenzoic acid) by continuous spectrophotometric measurement at 412 nm.
R E, Beattie, D J, Guthrie, D T, Elmore, C H, Williams, B, Walker   +4 more
openaire   +2 more sources

Root Order Dependent Changes in Fine‐Root Substrate and Soil Environment Regulate Soil Organic Nitrogen Fractions Under Acid Rain and Nitrogen Deposition

Land Degradation &Development, EarlyView.
ABSTRACT Acid rain and nitrogen deposition are important environmental stressors affecting soil nitrogen cycling in subtropical forests, whereas fine‐root decomposition represents a major pathway for soil organic nitrogen (SON) input and transformation.
Xiongfei Zhang, Xingyu Zhang, Jinchi Zhang, Jialei Ren, Chong Li, Hui Nie, Jingyi Zeng, Xuanran Yu, Jie Lin, Tingyu Sun, Xin Liu   +10 more
wiley   +1 more source

Effects of polystyrene nanoparticles on the microbiota and functional diversity of enzymes in soil

Environmental Sciences Europe, 2018
Background The increasing production of nanoplastics and the fragmentation of microplastics into smaller particles suggest a plausible yet unclear hazard in the natural environment, such as soil.
T. T. Awet, Y. Kohl, F. Meier, S. Straskraba, A.-L. Grün, T. Ruf, C. Jost, R. Drexel, E. Tunc, C. Emmerling   +9 more
doaj   +1 more source

Carbon‐Fixing Bacterial Network Complexity Mediates Soil Multifunctionality in a Panax notoginseng‐Pinus armandii Agroforestry System

Land Degradation &Development, EarlyView.
ABSTRACT Autotrophic carbon‐fixing bacteria (CFB) are central contributors to soil carbon sequestration and biogeochemical carbon cycling in agroforestry ecosystems and can act as reliable biological indicators for evaluating agroforestry ecosystem sustainability.
Jingying Hei, Rui Rui, Shu Wang, Xiahong He   +3 more
wiley   +1 more source

Clay Minerals Change the Toxic Effect of Cadmium on the Activities of Leucine Aminopeptidase

Adsorption Science & Technology, 2021
Soil leucine aminopeptidase (LAP) is a hydrolytic enzyme involved in the acquisition of nitrogen by microorganisms. In contaminated soils, LAP activity is affected not only by the type and concentration of heavy metals but also by the form of enzyme ...
Shunyu Huang, Jingji Li, Jipeng Wang
doaj   +1 more source

Plasmepsins as Antimalarial Drug Targets—Then, Now, and the Future

Medicinal Research Reviews, EarlyView.
ABSTRACT Malaria is a devastating disease caused by Plasmodium parasites. Plasmodium parasites express ten cathepsin D‐like aspartyl proteases, called plasmepsins (PMs). These PMs have diverse roles fulfill diverse functions throughout the parasite's lifecycle, though several exhibit functional redundancies. Among them, PMV, PMIV, and PMX are essential
Brad E. Sleebs
wiley   +1 more source

Degradable versus inert microplastics: Effects on soil organic carbon persistence via microbial drivers in an agroecosystem

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Microplastics (MPs) are widespread in terrestrial ecosystems, raising global concerns that they may disrupt soil organic carbon (SOC) cycling and undermine agroecosystem contributions to climate mitigation.
Meng‐Ying Li, Wei Wang, Yue Ma, Jia‐Yao Yang, Shu‐Tong Liu, Xiao‐Bin Xiong, Tingting Zhao, Yuanze Sun, Saddam Saqib, Muhammd Ashraf, Matthias C. Rillig, You‐Cai Xiong   +11 more
wiley   +1 more source

Changes in the Levels of Neuropeptides and Their Metabolizing Enzymes in the Brain Regions of Nucleus Basalis Magnocellularis-Lesioned Rats

Journal of Pharmacological Sciences, 2003
The regulation mechanism of the interrelation between neuropeptides and their metabolizing enzymes in in vivo tissues is still not clear. In the present report, we attempted to measure the levels of neuropeptides and their enzymes in the frontal cortex ...
Masaru Yamamoto, Toshiyuki Chikuma, Takeshi Kato   +2 more
doaj   +1 more source

The tomato chloroplast stromal proteome compendium elucidated by leveraging a plastid protein-localization prediction Atlas

Frontiers in Plant Science, 2023
Tomato (Solanum lycopersicum) is a model species for studying fruit development, wounding, herbivory, and pathogen attack. Despite tomato’s world-wide economic importance and the role of chloroplasts as metabolic hubs and integrators of environmental ...
Oindrila Bhattacharya, Irma Ortiz, Nathan Hendricks, Linda L. Walling, Linda L. Walling   +4 more
doaj   +1 more source

Bio‐organic fertilizer alleviated soil microbial C limitations, aggravated P limitations and increased microbial C use efficiency in a degraded desert steppe

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Bio‐organic fertilizer (BOF), which integrates organic carbon sources, beneficial microorganisms and essential nutrients, represents a distinctive approach to grassland restoration that differs fundamentally from conventional fertilization practices.
Yao Zhou, Wen Li, Jing Ma, Jinzhen Li, Haixin Jiang, Guohui Wang, Yan Shen, Hongbin Ma   +7 more
wiley   +1 more source