Topic
Chitin
About: Chitin is a research topic. Over the lifetime, 6590 publications have been published within this topic receiving 253993 citations.
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TL;DR: The available data for Serratia chitinases show that the chitinolytic machinery of this bacterium consists of two processive exo-enzymes that degrade the chITin chains in opposite directions (ChiA and ChiB) and a non-processive endo-enzyme, ChiC.
Abstract: Serratia marcescens produces three chitinases, ChiA, ChiB and ChiC which together enable the bacterium to efficiently degrade the insoluble chitin polymer We present an overview of the structural properties of these enzymes, as well as an analysis of their activities towards artificial chromogenic chito-oligosaccharide-based substrates, chito-oligosaccharides, chitin and chitosan We also present comparative inhibition data for the pseudotrisaccharide allosamidin (an analogue of the reaction intermediate) and the cyclic pentapeptide argadin The results show that the enzymes differ in terms of their subsite architecture and their efficiency towards chitinous substrates The idea that the three chitinases play different roles during chitin degradation was confirmed by the synergistic effects that were observed for certain combinations of the enzymes Studies of the degradation of the soluble heteropolymer chitosan provided insight into processivity Taken together, the available data for Serratia chitinas
142 citations
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TL;DR: In this article, carboxymethyl-and dihydroxypropylchitine were preprocessed in order to obtain carboxyethylmethyl- and dihydroxypyldiamethyl-CHitine.
Abstract: Preparation de carboxymethyl- et dihydroxypropylchitine. Etude des sites d'alkylation par spectrometrie RMN
142 citations
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TL;DR: High molecular weight chitin fibers were electrospun in a one-pot process directly from a 1-ethyl-3-methylimidazolium acetate solution of chitIn extracted from dried shrimp shell to obviate the need for the many chemicals and the energy used in industrial isolation of Chitin from crustacean shells.
141 citations
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TL;DR: It is demonstrated that the two chitin synthase genes have additional roles in embryonic and adult development in the red flour beetle and Tribolium castaneum and that these genes are required for all types of molt.
141 citations
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TL;DR: The results suggest that the main analgesic effect of chitosan is the absorption of proton ions released in the inflammatory site, while that of ch itin is theabsor of bradykinin.
140 citations