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Trans-β-bergamotene
Bergamotenes are a group of isomeric chemical compounds with the molecular formula C15H24. The bergamotenes are found in a variety of plants, particularly in their essential oils. There are two structural isomers, α-bergamotene and β-bergamotene, which differ only by the location of a double bond. Both of these isomers have stereoisomers, the most common of which are known as the '' cis'' and ''trans''-isomers (or endo- and exo-isomers). α-Bergamotene is found in the oils of carrot, bergamot, lime, citron, cottonseed, and kumquat. Pheromones The bergamotenes are pheromones for some insects. For example, β-''trans''-bergamotene is a pheromone for the wasp ''Melittobia digitata''. Plants can defend themselves against attack by herbivorous insects by producing pheromones such as bergamotenes that attract predators of those herbivores. In a more complex relationship, the tobacco plant ''Nicotiana attenuata'' emits α-''trans''-bergamotene from its flowers at night to attra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isomer
In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element (chemistry), element – but distinct arrangements of atoms in space. ''Isomerism'' refers to the existence or possibility of isomers. Isomers do not necessarily share similar chemical property, chemical or physical property, physical properties. Two main forms of isomerism are structural isomerism, structural (or constitutional) isomerism, in which ''chemical bond, bonds'' between the atoms differ; and stereoisomerism (or spatial isomerism), in which the bonds are the same but the ''relative positions'' of the atoms differ. Isomeric relationships form a hierarchy. Two chemicals might be the same constitutional isomer, but upon deeper analysis be stereoisomers of each other. Two molecules that are the same stereoisomer as each other might be in different conformational forms or be different Isotopologue, isotopologues. The depth of analy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melittobia Digitata
''Melittobia'' is a genus of hymenopteran insects of the family Eulophidae. Biology ''Melittobia'' wasps are gregarious ectoparasitoids on solitary bees, honeybee and wasps, and also of any insect cohabitants of their hosts' nests, such as Coleoptera, Lepidoptera and Diptera. One species has been reared from puparia of '' Anastrepha'' fruit flies collected from fallen fruits in Mexico. They show intrasexual and intersexual dimorphism, with the males being blind and flightless and two castes of females, one long winged and one short winged, which are probably determined by nutrition. The females exhibit primitive social traits while the males are competitive, ferociously fighting and killing their male siblings. The males attract the females using a pheromone and they have an elaborate courtship ritual. They have a skewed sex ratio with 95% of the offspring being females which are from fertilised eggs but males are produced asexually through arrhenotoky. The females have overla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fumagillin
Fumagillin is a complex biomolecule and used as an antimicrobial agent. It was isolated in 1949 from the microbial organism ''Aspergillus fumigatus''. Uses In animals It was originally used against microsporidian parasites ''Nosema apis'' infections in honey bees. Some studies found it to be effective against some myxozoan parasites, including ''Myxobolus cerebralis,'' an important parasite of fish; however, in the more rigorous tests required for U.S. Food and Drug Administration approval, it was ineffective. There are reports that fumagillin controls ''Nosema ceranae'', which has recently been hypothesized as a possible cause of colony collapse disorder. The latest report, however, has shown it to be ineffective against ''N. ceranae''. Fumagillin is also investigated as an inhibitor of malaria parasite growth. In humans Fumagillin has been used in the treatment of microsporidiosis. It is also an amebicide. Fumagillin can block blood vessel formation by binding to an enzyme M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
(+)-endo-beta-bergamotene Synthase ((2Z,6Z)-farnesyl Diphosphate Cyclizing)
(+)-''endo''-β-Bergamotene synthase (EC 4.2.3.53, (2''Z'',6''Z'')-farnesyl diphosphate cyclizing) (SBS) is an enzyme with List of enzymes, systematic name (2''Z'',6''Z'')-farnesyl diphosphate lyase (cyclizing; (+)-''endo''-β-bergamotene-forming). This enzyme catalysis, catalyses the following chemical reaction : (2Z,6Z)-farnesyl diphosphate, (2''Z'',6''Z'')-farnesyl diphosphate \rightleftharpoons (+)-endo-beta-bergamotene, (+)-''endo''-β-bergamotene + diphosphate The enzyme synthesizes a mixture of sesquiterpenoids from (2''Z'',6''Z'')-farnesyl diphosphate. References External links * {{Portal bar, Biology, border=no EC 4.2.3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exo-alpha-bergamotene Synthase
''exo''-α-Bergamotene synthase (EC 4.2.3.81, ''trans''-α-bergamotene synthase, LaBERS (gene)) is an enzyme with systematic name (2''E'',6''E'')-farnesyl diphosphate lyase (cyclizing, (–)-''exo''-α-bergamotene-forming). This enzyme catalyses the following chemical reaction: : (2''E'',6''E'')-farnesyl diphosphate \rightleftharpoons (–)-''exo''-α-bergamotene + diphosphate The enzyme synthesizes a mixture of sesquiterpenoid Sesquiterpenes are a class of terpenes that consist of three isoprene units and often have the molecular formula C15H24. Like monoterpenes, sesquiterpenes may be cyclic or contain rings, including many combinations. Biochemical modifications such ...s from (2''E'',6''E'')-farnesyl diphosphate. References External links * {{Portal bar, Biology, border=no EC 4.2.3 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farnesyl Pyrophosphate
Farnesyl pyrophosphate (FPP), also known as farnesyl diphosphate (FDP), is the precursor to all sesquiterpenes, which comprises thousands of compounds. These include all sesquiterpenes as well as sterols and carotenoids. It is also used in the synthesis of CoQ (part of the electron transport chain), as well as dehydrodolichol diphosphate (a precursor of dolichol, which transports proteins to the ER lumen for ''N''-glycosylation). Biosynthesis Farnesyl pyrophosphate synthase (a prenyl transferase) catalyzes sequential condensation reactions of dimethylallyl pyrophosphate with 2 units of 3-isopentenyl pyrophosphate to form farnesyl pyrophosphate: : Pharmacology The above reactions are inhibited by bisphosphonates (used for osteoporosis). Farnesyl pyrophosphate is a selective agonist of TRPV3. Related compounds * Farnesene * Farnesol * Geranyl pyrophosphate *Geranylgeranyl pyrophosphate Geranylgeranyl pyrophosphate is an intermediate in the biosynthesis of diterpenes and d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biosynthesis
Biosynthesis, i.e., chemical synthesis occurring in biological contexts, is a term most often referring to multi-step, enzyme-Catalysis, catalyzed processes where chemical substances absorbed as nutrients (or previously converted through biosynthesis) serve as enzyme substrate (chemistry), substrates, with conversion by the living organism either into simpler or more complex Product (chemistry), products. Examples of biosynthetic pathways include those for the production of amino acids, lipid membrane components, and nucleotides, but also for the production of all classes of biological macromolecules, and of acetyl-coenzyme A, adenosine triphosphate, nicotinamide adenine dinucleotide and other key intermediate and transactional molecules needed for metabolism. Thus, in biosynthesis, any of an array of Chemical compound, compounds, from simple to complex, are converted into other compounds, and so it includes both the catabolism and anabolism (building up and breaking down) of comple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Max-Planck-Gesellschaft
The Max Planck Society for the Advancement of Science (; abbreviated MPG) is a formally independent non-governmental and non-profit association of German research institutes. Founded in 1911 as the Kaiser Wilhelm Society, it was renamed to the Max Planck Society in 1948 in honor of its former president, theoretical physicist Max Planck. The society is funded by the federal and state governments of Germany. Mission According to its primary goal, the Max Planck Society supports fundamental research in the natural, life and social sciences, the arts and humanities in its 84 (as of January 2024) institutes and research facilities. , the society has a total staff of 24,655 permanent employees, including 6,688 contractually employed scientists, 3,444 doctoral candidates, and 3,203 guest scientists. 44.9% of all employees are female and 57.2% of the scientists are foreign nationals. The society's budget for 2023 was about €2.1 billion. The Max Planck Society has a world-leading repu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tobacco Hawk Moth
''Manduca sexta'' is a moth of the family Sphingidae present through much of the Americas. The species was first described by Carl Linnaeus in his 1763 ''Centuria Insectorum''. Commonly known as the Carolina sphinx moth and the tobacco hawk moth (as adults) and the tobacco hornworm and the Goliath worm (as larvae), it is closely related to and often confused with the very similar tomato hornworm (''Manduca quinquemaculata''); the larvae of both feed on the foliage of various plants of the family Solanaceae. The larvae of these species can be distinguished by their lateral markings: Tomato hornworms have eight V-shaped white markings with no borders; tobacco hornworms have seven white diagonal lines with a black border. Additionally, tobacco hornworms have red horns, while tomato hornworms have dark blue or black horns. A mnemonic to remember the markings is tobacco hornworms have straight white lines like cigarettes, while tomato hornworms have V-shaped markings (as in "vine-ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicotiana Attenuata
''Nicotiana attenuata'' is a species of wild tobacco known by the common name coyote tobacco. It is native to western North America from British Columbia to Texas and northern Mexico, where it grows in many types of habitat. It is a glandular and sparsely hairy annual herb exceeding a meter in maximum height. The leaf blades may be long, the lower ones oval and the upper narrower in shape, and are borne on petioles. The inflorescence bears several flowers with pinkish or greenish white tubular throats long, their bases enclosed in pointed sepals. The flower face has five mostly white lobes. The fruit is a capsule about long. Natural history Introduction ''Nicotiana attenuata'' has been utilized as an ecological model species since 1994, thanks in large part to its diverse interactions with a host of different plants, insects, and microorganisms in its native habitat. Work at the Max Planck Institute for Chemical Ecology in Jena, Germany, has been instrumental in integr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kumquat
Kumquats ( ), or cumquats in Australian English, are a group of small, angiosperm, fruit-bearing trees in the family Rutaceae. Their taxonomy is disputed. They were previously classified as forming the now-historical genus ''Fortunella'' or placed within ''Citrus'', . Different classifications have alternatively assigned them to anywhere from a single species, ''Citrus japonica'', to numerous species representing each cultivar. Recent genomic analysis defines three pure species, ''Citrus hindsii'', ''Citrus margarita, C. margarita'' and ''Citrus crassifolia, C. crassifolia'', with ''C.'' × ''japonica'' being a Hybrid (biology), hybrid of the last two. The edible fruit closely resembles the Orange (fruit), orange (''Citrus x sinensis'') in color, texture, and anatomy, but is much smaller, being approximately the size of a large olive. The kumquat is a fairly cold-hardy citrus. Etymology The English word ''kumquat'' is a borrowing of the Cantonese (; zh, c=金橘), from "gol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
