A [3]Rotaxane Host Selects Between Stereoisomers
نویسندگان
چکیده
منابع مشابه
Brood parasitism selects for no defence in a cuckoo host.
In coevolutionary arms races, like between cuckoos and their hosts, it is easy to understand why the host is under selection favouring anti-parasitism behaviour, such as egg rejection, which can lead to parasites evolving remarkable adaptations to 'trick' their host, such as mimetic eggs. But what about cases where the cuckoo egg is not mimetic and where the host does not act against it? Classi...
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The acquisition by parasites of the capacity to infect resistant host genotypes, that is, resistance-breaking, is predicted to be hindered by across-host fitness trade-offs. All analyses of costs of resistance-breaking in plant viruses have focused on within-host multiplication without considering other fitness components, which may limit understanding of virus evolution. We have reported that ...
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Hydroxy-L-proline was first isolated by Fischer in 1902 from a hydrolysate of gelatin (l).l The synthesis and determination of the structure were reported by Leuchs and coworkers (5--g), and, in 1919, the separation of the two racemic stereoisomers and the resolution of each racemate through mixtures of quinine with the corresponding N-phenylisocyanate derivatives were accomplished (5). In the ...
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Most organisms reproduce through outcrossing, even though it comes with substantial costs. The Red Queen hypothesis proposes that selection from coevolving pathogens facilitates the persistence of outcrossing despite these costs. We used experimental coevolution to test the Red Queen hypothesis and found that coevolution with a bacterial pathogen (Serratia marcescens) resulted in significantly ...
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1. Introduction This study provides a computer-simulated optimal selection of antecedent of reflexive pronouns based on the Visual C++ computer programming language. The algorithm that I use for this implementation is based on the optimal theoretic approach to the proper interpretation of reflexive pronoun roughly adopted in Moon (1999). I show that the complex behavior of reflexive pronouns ca...
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ژورنال
عنوان ژورنال: Angewandte Chemie International Edition
سال: 2018
ISSN: 1433-7851
DOI: 10.1002/anie.201800665