Biology
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Prothoracicotropic Hormone聽(PTTH) Formerly Known As “Brain Hormone”
Prothoracicotropic hormone (PTTH) was the first insect hormone to be discovered. The chemical symbol for prothoracicotropic hormone is (C64H102N16O19S2). It was originally described simply as “brain hormone” by early workers such as Stefan Kope膰 (1922) and Vincent… Read more.
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Fat Body Wiki
Fat body is a highly dynamic insect tissue composed primarily of storage cells. It is distributed throughout the insect’s internal body cavity; the haemocoel, in close proximity to the epidermis, digestive organs and ovaries. Its main functions are nutrient storage and… Read more.
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Phytoecdysteroids, Plant-Derived聽Ecdysteroids Wiki
Phytoecdysteroids are plant-derived ecdysteroids. Phytoecdysteroids are a class of chemicals that plants synthesize for defense against phytophagous (plant eating) insects. These compounds are mimics of hormones used by arthropods in the molting… Read more.
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Halloween Genes Wiki
The halloween genes are a set of genes identified in Drosophila melanogaster that influence embryonic development. All of the genes code for cytochrome P450 enzymes in the ecdysteroidogenic pathway (biosynthesis of ecdysone from cholesterol). Ecdysteroids such as 20-hydroxyecdysone and ecdysone influence many of the morphological, physiological, biochemical… Read more.
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Chrysolina Beetles Have聽Cardiac Glycosides聽(Including Xylose) in Their Defensive Glands
The defensive secretions of some chrysomelid beetles belonging to the genera Chrysolina, Chrysochloa, and Dlochrysa contain complex mixtures of cardenolides. The spectral data for some of these compounds suggest that… Read more.
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Xylose is the first saccharide added to the聽serine聽or聽threonine聽in the聽proteoglycan聽type聽O-glycosylation
Xylose is the first saccharide added to the serine or threonine in the proteoglycan type O-glycosylation, and, so, it is the first saccharide in biosynthetic pathways of most anionic polysaccharides such as heparan sulfate and chondroitin sulfate. Definitions Proteoglycans are proteins that are heavily glycosylated. The… Read more.
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Xylose is the main building block for the聽hemicellulose
Xylose is the main building block for the聽hemicellulose聽xylan, which comprises about 30% of some plants (birch for example), far less in others (spruce and pine have about 9% xylan). Xylose… Read more.
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Reduction聽of xylose by catalytic聽hydrogenation聽produces the聽sugar substitute聽xylitol
Xylose聽(cf.聽Ancient Greek:聽尉蠉位慰谓,聽xylon, “wood”) is a sugar first isolated from wood, and named for it. Xylose is classified as a聽monosaccharide聽of the聽aldopentose聽type, which means that it contains five聽carbon聽atoms and includes an聽aldehyde聽functional group.… Read more.
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Cluster roots aka proteoid roots
Cluster roots, also known as聽proteoid roots, are聽plant聽roots聽that form clusters of closely spaced short lateral rootlets. They may form a two- to five-centimetre-thick mat just beneath the聽leaf litter. They enhance nutrient… Read more.
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Paracetamol is extremely toxic to cats, which lack the necessary聽UGT1A6聽enzyme to detoxify it
Paracetamol is extremely toxic to cats, which lack the necessary聽UGT1A6聽enzyme to detoxify it. Initial symptoms include vomiting, salivation, and discoloration of the tongue and gums. Unlike an overdose in humans,… Read more.
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