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saxitoxin -definition of saxitoxin by MedicineWord.com,a Medicine Dictionary
©http://medicineword.com From:http://www.medicineword.com/saxitoxin.shtmlsaxitoxin
<protein> Neurotoxin produced by the red tide dinoflagellates, Gonyaulax catenella and G. Tamarensis. It binds to the sodium channel, blocking the passage of action potentials. Its action closely resembles that of tetrodotoxin. The toxin was originally isolated from the clam, Saxidomus giganteus.
[Brand:New York Academy of Sciences][Price:$112.00]
[Brand:ICON Group International, Inc.][Price:$28.95]
Webster's bibliographic and event-based timelines are comprehensive in scope, covering virtually all topics, geographic locations and people. They do so from a linguistic point of view, and in the case of this book, the focus is on "Saxitoxin," including when used in literature (e.g. all authors that might have Saxitoxin in their name). As such, this book represents the largest compilation of timeline events associated with Saxitoxin when it is used in proper noun form. Webster's timelines cover bibliographic citations, patented inventions, as well as non-conventional and alternative meanings which capture ambiguities in usage. These furthermore cover all parts of speech (possessive, institutional usage, geographic usage) and contexts, including pop culture, the arts, social sciences (linguistics, history, geography, economics, sociology, political science), business, computer science, literature, law, medicine, psychology, mathematics, chemistry, physics, biology and other physical sciences. This "data dump" results in a comprehensive set of entries for a bibliographic and/or event-based timeline on the proper name Saxitoxin, since editorial decisions to include or exclude events is purely a linguistic process. The resulting entries are used under license or with permission, used under "fair use" conditions, used in agreement with the original authors, or are in the public domain.
[Brand:LAP LAMBERT Academic Publishing][Price:$102.00]
The present study deals with the molecular genetics and biochemistry of two cyanobacterial toxins, cylindrospermopsin and saxitoxin. The molecular phylogenies of three putative cylindrospermopsin biosynthesis genes, encoding an amidinotransferase (aoaA), a non-ribosomal peptide synthetase (aoaB) and a polyketide synthase (aoaC) has been examined and functional modelling was carried out to gain insights into the mechanism of precursor recruitment in this pathway. An in vitro assay was developed to characterise biochemical requirements for saxitoxin biosynthesis, using enzyme extracts from Cylindrospermopsis raciborskii T3. All biosynthesis enzymes were located in the cytosol. The effects of substrates and inhibitors on the in vitro biosynthesis of saxitoxin were examined and predictions made regarding enzymes that may be involved. These predictions were used in a degenerate PCR approach to identify the saxitoxin biosynthesis gene cluster in cyanobacteria.
[Brand:Hephaestus Books][Price:$26.75]
Hephaestus Books represents a new publishing paradigm, allowing disparate content sources to be curated into cohesive, relevant, and informative books. To date, this content has been curated from Wikipedia articles and images under Creative Commons licensing, although as Hephaestus Books continues to increase in scope and dimension, more licensed and public domain content is being added. We believe books such as this represent a new and exciting lexicon in the sharing of human knowledge. This particular book contains chapters focused on Amidines, and Guanidines.
More info: Amidines are a class of oxoacid derivatives. The oxoacid from which an amidine is derived must be of the form RnE(=O)OH, where R is a substituent. The −OH group is replaced by an −NH2 group and the =O group is replaced by =NR, giving amidines the general structure RnE(=NR)NR2 .
[Brand:ProQuest, UMI Dissertation Publishing][Price:$69.00]
Current detection methods for the marine toxin saxitoxin (STX) are bulky, expensive, or require loss of animal life. This dissertation describes progress toward development of a sensitive, portable electrochemical sensor for STX detection. The sensor design employs saxiphilin c-lobe, a STX-binding protein, immobilized in a microchannel for capture of STX. Upon binding of STX, an electroactive competitor---ferrocene-conjugated STX (FcSTX)---will be displaced from saxiphilin c-lobe and detected at an array of individually-addressable microelectrodes incorporated into the microchannel device, with signal amplified by redox cycling. Described herein are: expression, purification, and characterization of saxiphilin c-lobe and analysis of its interaction with STX by surface plasmon resonance; fabrication and characterization of the microchannel with microelectrode array; synthesis and electrochemical characterization of FcSTX and demonstration of its activity toward saxiphilin c-lobe; and necessary improvements to the device to make it suitable for electrochemical detection of STX using the competitive binding assay.
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