Reactivity Differences of Combined and Free Amino Acids: Quantifying the Relationship between Three-Dimensional Protein Structure and Singlet Oxygen Reaction Rates

2013 ◽  
Vol 47 (24) ◽  
pp. 14215-14223 ◽  
Author(s):  
Rachel A. Lundeen ◽  
Kristopher McNeill

1984 ◽  
Vol 38 (2) ◽  
pp. 177-179 ◽  
Author(s):  
B.S. Chauhan ◽  
N.C. Desai ◽  
Ramesh Bhatnagar ◽  
S.P. Garg


2017 ◽  
Vol 63 (No. 10) ◽  
pp. 455-460 ◽  
Author(s):  
Pavlíková Daniela ◽  
Zemanová Veronika ◽  
Pavlík Milan

The objectives of this study were to analyse the relationship between the contents of elements and free amino acids (AAs) in fronds of As-hyperaccumulator Pteris cretica cv. Albo-lineata (PC) and non-hyperaccumulator Pteris straminea (PS) during reversible senescence. The time-course effect on senescence was also investigated. The two ferns were grown in a pot experiment with soil containing 16 mg As<sub>total</sub>/kg soil for 160 days. The contents of elements and AAs in both ferns and in individual sampling periods differed. The highest accumulation of elements and AAs was measured in PS fronds after 83 days; however, the accumulation of As, Ca, Cu, Fe, Mg, P and asparagin in PC fronds was highest after 160 days. The results of principal component analysis showed more rapid senescence of PS compared to PC. This was caused by changes in the relationship between the contents of elements (cofactors of metalloenzymes, stress metabolites) and AAs (transport of NH<sub>2</sub> group and stress metabolites). The hyperaccumulator plant (PC) was more resistant than the bioindicator plant (PS) to the conversion from reversible to irreversible senescence.



2015 ◽  
Vol 49 (7) ◽  
pp. 4245-4254 ◽  
Author(s):  
Sonja Milić ◽  
Jelena Bogdanović Pristov ◽  
Dragosav Mutavdžić ◽  
Aleksandar Savić ◽  
Mihajlo Spasić ◽  
...  




2008 ◽  
Vol 42 (15) ◽  
pp. 5492-5498 ◽  
Author(s):  
Anne L. Boreen ◽  
Betsy L. Edhlund ◽  
James B. Cotner ◽  
Kristopher McNeill


2021 ◽  
Vol 12 ◽  
Author(s):  
Ryosuke Unno ◽  
Toshihiro Suzuki ◽  
Minenosuke Matsutani ◽  
Morio Ishikawa

Cheese ripening is effected by various microorganisms and results in the characteristic flavors of cheese. Owing to the complexity of the microbiota involved, the relationship between microorganisms and components during ripening remains unclear. In this study, metagenomics and metabolomics were integrated to reveal these relationships in three kinds of surface mold-ripened cheeses and two kinds of bacterial smear-ripened cheeses. The microbiota is broadly divided into two groups to correspond with different cheese types. Furthermore, surface mold-ripened cheese showed similar microbiota regardless of the cheese variety, whereas bacterial smear-ripened cheese showed specific microbiota characterized by marine bacteria (MB) and halophilic and alkaliphilic lactic acid bacteria for each cheese variety. In the metabolite analysis, volatile compounds suggested differences in cheese types, although organic acids and free amino acids could not determine the cheese characteristics. On the other hand, Spearman correlation analysis revealed that the abundance of specific bacteria was related to the formation of specific organic acids, free amino acids, and volatile compounds. In particular, MB was positively correlated with esters and pyrazines, indicating their contribution to cheese quality. These methodologies and results further our understanding of microorganisms and allow us to select useful strains for cheese ripening.



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