scholarly journals Orotidine-Containing RNA: Implications for the Hierarchical Selection (Systems Chemistry Emergence) of RNA

2017 ◽  
Vol 23 (51) ◽  
pp. 12668-12675 ◽  
Author(s):  
Eun-Kyong Kim ◽  
Vincent Martin ◽  
Ramanarayanan Krishnamurthy
2019 ◽  
Vol 3 (5) ◽  
pp. 435-443 ◽  
Author(s):  
Addy Pross

Despite the considerable advances in molecular biology over the past several decades, the nature of the physical–chemical process by which inanimate matter become transformed into simplest life remains elusive. In this review, we describe recent advances in a relatively new area of chemistry, systems chemistry, which attempts to uncover the physical–chemical principles underlying that remarkable transformation. A significant development has been the discovery that within the space of chemical potentiality there exists a largely unexplored kinetic domain which could be termed dynamic kinetic chemistry. Our analysis suggests that all biological systems and associated sub-systems belong to this distinct domain, thereby facilitating the placement of biological systems within a coherent physical/chemical framework. That discovery offers new insights into the origin of life process, as well as opening the door toward the preparation of active materials able to self-heal, adapt to environmental changes, even communicate, mimicking what transpires routinely in the biological world. The road to simplest proto-life appears to be opening up.


2006 ◽  
Author(s):  
Jamie L. Bomer ◽  
Nicole R. Bourdeau ◽  
Nita R. French ◽  
Michael Klein ◽  
Ryan A. Ross ◽  
...  

2008 ◽  
Author(s):  
Seymour Adler ◽  
Therese Macan ◽  
Lee Konczak ◽  
Paul Muchinsky ◽  
Amy Grubb ◽  
...  

1980 ◽  
Vol 19 (04) ◽  
pp. 187-194
Author(s):  
J.-Ph. Berney ◽  
R. Baud ◽  
J.-R. Scherrer

It is well known that Frame Selection Systems (FFS) have proved both popular and effective in physician-machine and patient-machine dialogue. A formal algorithm for definition of a Frame Selection System for handling man-machine dialogue is presented here. Besides, it is shown how the natural medical language can be handled using the approach of a tree branching logic. This logic appears to be based upon ordered series of selections which enclose a syntactic structure. The external specifications are discussed with regard to convenience and efficiency. Knowing that all communication between the user and the application programmes is handled only by FSS software, FSS contributes to achieving modularity and, therefore, also maintainability in a transaction-oriented system with a large data base and concurrent accesses.


2018 ◽  
Vol 24 (19) ◽  
pp. 2055-2075 ◽  
Author(s):  
Kalliopi Kostelidou ◽  
Ilias Matis ◽  
Georgios Skretas

Neurodegenerative Diseases (ND) are a major threat to the aging population and the lack of a single preventive or disease-modifying agent only serves to increase their impact. In the past few years, protein misfolding and the subsequent formation of neurotoxic oligomeric/aggregated protein species have emerged as a unifying theme underlying the pathology of these complex diseases. Recently developed microbial genetic screens and selection systems for monitoring ND-associated protein misfolding have allowed the establishment of highthroughput assays for the identification of cellular factors and processes that are important mediators of NDassociated proteotoxicities. In addition, such systems have facilitated the discovery of synthetic and natural compounds with the ability to rescue the misfolding and the associated pathogenic effects of aggregation-prone proteins associated with NDs. This review outlines such available systems in bacteria and yeast, whose usage will likely accelerate the pre-clinical discovery process for effective drugs against a variety of NDs with high socioeconomic impact.


2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Deanne Nolan ◽  
Greta Heydenrych
Keyword(s):  

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