Amines marine organisms

Amino acids become linked by reactions that occur between the amine group of one amino acid and the carboxyl group of another. As shown in Figure 22.23, this polymerization produces a molecule of water and, hence, is a condensation reaction. Naturally occurring polypeptides with molecular weights in excess of 10,000 daltons are termed proteins. These biomolecules are ubiquitous in marine organisms and are not specific to particular species. Proteins are important components of enzymes as well as of structural parts and connective tissues. 

Most marine organisms also contain alkyl and quaternary amines (Figure 24.1), which in some cases are present at concentrations close to that of the most abundant amino... 

Eudistones A and B were obtained from an undetermined species of Eudistoma from the Seychelles Islands. Tintamine, shermilamine E and cydoshermil-amine D are three sulfur-containing pyridoacridines. These new alkaloids were extracted from Cystodytes viola-tinctus, whose specific name refers to the animal s color and whose origin is the lagoon of Mayotte. Tintamine is the first example of a pyridoacridine associated with a tropolone and shermilamine E is a rare example of an N-oxide derivative isolated from a marine organism. 

Many volatile organic compounds (hydrocarbons, alcohols, aldehydes, acids, esters, ketones, amines, etc.) have been identified in marine systems [ 156,157]. These volatile materials may have an important role in the cycling of organic... 

Developmental regulation of sHsps is also common and has been documented in many different organisms. In Drosophila (Amin et al., 1991 Arrigo and Pauli, 1988 Glaser et al., 1986 Joanisse et al., 1998b Klemenz and Gehring, 1986 Landry et al., 1991 Marin and Tanguay,... 

Kinnel, R.B., Gehrken, H.-P, SwaU, R. etal. (1998) Palau amine and its congeners A family of bioactive bisguanidines from the marine sponge Stylotella aurantium. The Journal of Organic Chemistry, 63, 3281-3286. 

Other light-absorbing compounds that may be present in marine aerosol particles and contribute to photochemistry include transition metals, nitrate anions, amines, polyaromatic hydrocarbons, and other organic molecules. Transition metal complexes (including iron, copper, manganese, nickel) are... 

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