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Plakohypaphorine
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plakohypaphorine A
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plakohypaphorine B
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plakohypaphorine F
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plakohypaphorine E
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plakohypaphorine D
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plakohypaphorine C
Plakohypaphorines are halogenated indolic non-proteinogenic amino acids named for their similarity to hypaphorine (''N,N,N''-trimethyltryptophan). First reported in the Caribbean sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate throug ... ''Plakortis simplex'' in 2003, plakohypaphorines A-C were the first iodine-containing indoles to be discovered in nature. Plakohypaphorines D-F, also found in ''P. simplex'', were reported in 2004 by a group including the researchers who discovered the original plakohypaphorines. References *Taglialatela-Scafati Orazio et al., 2003. ''Plakohypaphorines A-C, Iodine-Containing Alkaloids from the Caribbean Sponge'' Plakortis simplex. European Journal of Organic Chemistry. 2003(2), pp. 284–287. *Borrelli, Francesca, et al., 2004. ''Iodinated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organoiodides
Organoiodine compounds are organic compounds that contain one or more carbon–iodine bonds. They occur widely in organic chemistry, but are relatively rare in nature. The thyroxine hormones are organoiodine compounds that are required for health and the reason for government-mandated iodization of salt. Structure, bonding, general properties Almost all organoiodine compounds feature iodide connected to one carbon center. These are usually classified as derivatives of I−. Some organoiodine compounds feature iodine in higher oxidation states. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I. This periodic order also follows the atomic radius of halogens and the length of the carbon-halogen bond. For example, in the molecules represented by CH3X, where X is a halide, the carbon-X bonds have strengths, or bond dissociation energies, of 115 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simplified Molecular Input Line Entry Specification
The simplified molecular-input line-entry system (SMILES) is a specification in the form of a line notation for describing the structure of chemical species using short ASCII strings. SMILES strings can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the molecules. The original SMILES specification was initiated in the 1980s. It has since been modified and extended. In 2007, an open standard called OpenSMILES was developed in the open-source chemistry community. History The original SMILES specification was initiated by David Weininger at the USEPA Mid-Continent Ecology Division Laboratory in Duluth in the 1980s. Acknowledged for their parts in the early development were "Gilman Veith and Rose Russo (USEPA) and Albert Leo and Corwin Hansch (Pomona College) for supporting the work, and Arthur Weininger (Pomona; Daylight CIS) and Jeremy Scofield (Cedar River Software, Renton, WA) for assistance in programmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indole
Indole is an aromatic heterocyclic organic compound In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. Th ... with the formula Carbon, C8Hydrogen, H7Nitrogen, N. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered pyrrole ring. Indole is widely distributed in the natural environment and can be produced by a variety of bacteria. As an Cell signaling, intercellular signal molecule, indole regulates various aspects of bacterial physiology, including Bacterial spore, spore formation, plasmid stability, drug resistance, resistance to drugs, biofilm formation, and virulence. The amino acid tryptophan is an indole derivative and the precursor of the neurotransmitter serotonin. General properties and occurrence Indole is a solid at room temperature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Formula
In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and ''plus'' (+) and ''minus'' (−) signs. These are limited to a single typographic line of symbols, which may include subscripts and superscripts. A chemical formula is not a chemical name, and it contains no words. Although a chemical formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula. Chemical formulae can fully specify the structure of only the simplest of molecules and chemical substances, and are generally more limited in power than chemical names and structural formulae. The simplest types of chemical formulae are called ''empirical formulae'', which use letters and numbers indicating the numerical ''proportions'' of ato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUPAC Nomenclature
A chemical nomenclature is a set of rules to generate systematic names for chemical compounds. The nomenclature used most frequently worldwide is the one created and developed by the International Union of Pure and Applied Chemistry (IUPAC). The IUPAC's rules for naming organic and inorganic compounds are contained in two publications, known as the ''Blue Book''. . and the '' Red Book'',. respectively. A third publication, known as the '' Green Book'',. recommends the use of symbols for physical quantities (in association with the IUPAP), while a fourth, the ''Gold Book'',''Compendium of Chemical Terminology, IMPACT Recommendations (2nd Ed.)'', Oxford:Blackwell Scientific Publications. (1997) defines many technical terms used in chemistry. Similar compendia exist for biochemistry''Biochemical Nomenclature and Related Documents'', London: Portland Press, 1992. (the ''White Book'', in association with the IUBMB), analytical chemistry (the '' Orange Book''), macromolecular c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sponge
Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Sponges were first to branch off the evolutionary tree from the last common ancestor of all animals, making them the sister group of all other animals. Etymology The term ''sponge'' derives from the Ancient Greek word ( 'sponge'). Overview Sponges are similar to other animals in that they are multicellula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
