|
Bistramide A
Bistramide A is a chemical compound originally found in the marine ascidian ''Lissoclinum bistratum'', in the genus ''Lissoclinum''. It has been identified as a toxin A toxin is a naturally occurring organic poison produced by metabolic activities of living cells or organisms. Toxins occur especially as a protein or conjugated protein. The term toxin was first used by organic chemist Ludwig Brieger (1849 .... References Spiro compounds Carboxamides Tetrahydropyrans {{organic-compound-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ascidiacea
Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" made of a polysaccharide. Ascidians are found all over the world, usually in shallow water with salinities over 2.5%. While members of the Thaliacea and Larvacea (Appendicularia) swim freely like plankton, sea squirts are sessile animals after their larval phase: they then remain firmly attached to their substratum, such as rocks and shells. There are 2,300 species of ascidians and three main types: solitary ascidians, social ascidians that form clumped communities by attaching at their bases, and compound ascidians that consist of many small individuals (each individual is called a zooid) forming colonies up to several meters in diameter. Sea squirts feed by taking in water through a tube, the oral siphon. The water enters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lissoclinum Bistratum
''Lissoclinum'' is a genus of tunicates. Taxonomy ''Lissoclinum'' contains the following species: * '' Lissoclinum argyllense'' * '' Lissoclinum triangulum'' * '' Lissoclinum cavum'' * '' Lissoclinum nebulosum'' * '' Lissoclinum taratara'' * '' Lissoclinum tasmanense'' * '' Lissoclinum vareau'' * '' Lissoclinum variabile'' * '' Lissoclinum abdominale'' * '' Lissoclinum agriculum'' * '' Lissoclinum aureum'' * '' Lissoclinum calycis'' * '' Lissoclinum durabile'' * '' Lissoclinum levitum'' * '' Lissoclinum ravarava'' * ''Lissoclinum reginum'' * '' Lissoclinum roseum'' * '' Lissoclinum rubrum'' * '' Lissoclinum spongium'' * '' Lissoclinum stellatum'' * '' Lissoclinum textrinum'' * '' Lissoclinum timorense'' * '' Lissoclinum tuheiavae'' * '' Lissoclinum verrilli'' * '' Lissoclinum vulgare'' * '' Lissoclinum violaceum'' * '' Lissoclinum bilobatum'' * '' Lissoclinum bistratum'' * ''Lissoclinum badium'' * ''Lissoclinum marpum ''Lissoclinum'' is a genus of tunicates. Taxonomy '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lissoclinum
''Lissoclinum'' is a genus of tunicates. Taxonomy ''Lissoclinum'' contains the following species: * '' Lissoclinum argyllense'' * '' Lissoclinum triangulum'' * '' Lissoclinum cavum'' * '' Lissoclinum nebulosum'' * '' Lissoclinum taratara'' * '' Lissoclinum tasmanense'' * '' Lissoclinum vareau'' * ''Lissoclinum variabile'' * '' Lissoclinum abdominale'' * '' Lissoclinum agriculum'' * '' Lissoclinum aureum'' * '' Lissoclinum calycis'' * '' Lissoclinum durabile'' * '' Lissoclinum levitum'' * '' Lissoclinum ravarava'' * ''Lissoclinum reginum'' * '' Lissoclinum roseum'' * '' Lissoclinum rubrum'' * '' Lissoclinum spongium'' * ''Lissoclinum stellatum'' * ''Lissoclinum textrinum'' * ''Lissoclinum timorense'' * ''Lissoclinum tuheiavae'' * ''Lissoclinum verrilli'' * ''Lissoclinum vulgare'' * ''Lissoclinum violaceum'' * ''Lissoclinum bilobatum'' * ''Lissoclinum bistratum'' * ''Lissoclinum badium'' * ''Lissoclinum marpum'' * '' Lissoclinum mereti'' * '' Lissoclinum midui'' * '' Lissoclinum m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toxin
A toxin is a naturally occurring organic poison produced by metabolic activities of living cells or organisms. Toxins occur especially as a protein or conjugated protein. The term toxin was first used by organic chemist Ludwig Brieger (1849–1919) and is derived from the word toxic. Toxins can be small molecules, peptides, or proteins that are capable of causing disease on contact with or absorption by body tissues interacting with biological macromolecules such as enzymes or cellular receptors. Toxins vary greatly in their toxicity, ranging from usually minor (such as a bee sting) to potentially fatal even at extremely low doses (such as botulinum toxin). Toxins are largely secondary metabolites, which are organic compounds that are not directly involved in an organism's growth, development, or reproduction, instead often aiding it in matters of defense. Terminology Toxins are often distinguished from other chemical agents strictly based on their biological origin. Les ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiro Compounds
In organic chemistry, spiro compounds are compounds that have at least two molecular rings with only one common atom. The simplest spiro compounds are bicyclic (having just two rings), or have a bicyclic portion as part of the larger ring system, in either case with the two rings connected through the defining single common atom. The one common atom connecting the participating rings distinguishes spiro compounds from other bicyclics: from ''isolated ring compounds'' like biphenyl that have no connecting atoms, from ''fused ring compounds'' like decalin having two rings linked by two adjacent atoms, and from ''bridged ring compounds'' like norbornane with two rings linked by two non-adjacent atoms.For all four categories, see The specific chapters can be found aan respectively, same access date. For the description featuring adjacent atoms for all but the isolated category, see Clayden, op. cit. Spiro compounds may be fully carbocyclic (all carbon) or heterocyclic (h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
