scholarly journals SYNTHESIS AND RESEARCH METHODS OF SULFUR-CONTAINING SORBENTS.

2021 ◽  
Vol 104 (12) ◽  
pp. 1239-1243
Author(s):  
Sadriddin Choriyevich Eshkarayev ◽  
◽  
Bekzod Ergashevich Babamuratov ◽  
Toir Raxmon ugli Saidnazarov ◽  
Nurali Abdullo ugli Amonov ◽  
...  
Author(s):  
E.M. Kuhn ◽  
K.D. Marenus ◽  
M. Beer

Fibers composed of different types of collagen cannot be differentiated by conventional electron microscopic stains. We are developing staining procedures aimed at identifying collagen fibers of different types.Pt(Gly-L-Met)Cl binds specifically to sulfur-containing amino acids. Different collagens have methionine (met) residues at somewhat different positions. A good correspondence has been reported between known met positions and Pt(GLM) bands in rat Type I SLS (collagen aggregates in which molecules lie adjacent to each other in exact register). We have confirmed this relationship in Type III collagen SLS (Fig. 1).


2020 ◽  
Vol 48 (2) ◽  
pp. 613-620
Author(s):  
Clara Ortegón Salas ◽  
Katharina Schneider ◽  
Christopher Horst Lillig ◽  
Manuela Gellert

Processing of and responding to various signals is an essential cellular function that influences survival, homeostasis, development, and cell death. Extra- or intracellular signals are perceived via specific receptors and transduced in a particular signalling pathway that results in a precise response. Reversible post-translational redox modifications of cysteinyl and methionyl residues have been characterised in countless signal transduction pathways. Due to the low reactivity of most sulfur-containing amino acid side chains with hydrogen peroxide, for instance, and also to ensure specificity, redox signalling requires catalysis, just like phosphorylation signalling requires kinases and phosphatases. While reducing enzymes of both cysteinyl- and methionyl-derivates have been characterised in great detail before, the discovery and characterisation of MICAL proteins evinced the first examples of specific oxidases in signal transduction. This article provides an overview of the functions of MICAL proteins in the redox regulation of cellular functions.


ASHA Leader ◽  
2002 ◽  
Vol 7 (21) ◽  
pp. 1-12 ◽  
Author(s):  
Julie Wambaugh ◽  
Barbara Bain

Author(s):  
Phyllis Tharenou ◽  
Ross Donohue ◽  
Brian Cooper

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