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  • 1
    ISSN: 1432-1432
    Keywords: Parvalbumins ; Calcium-Binding Proteins ; Protein Evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary 1. Parvalbumins were isolated from the white muscle ofCynoscion regalis, Leiostomus xanthurus, andMenticirrhus americanus of the Sciaenidae andPomatomus saltatrix of the Pomatomidae. 2. Menticirrhus contains three isoparvalbumins. The other species contain two isoparvalbumins which are designated “fast” and “slow” in accord with their electrophoretic mobilities. Measurements of the denatured molecular weights show the “slow” isoparvalbumins have slightly larger apparent molecular weights, but all apparent molecular weights are in the range 10,400-14,000. 3. Amino acid compositional studies indicate that the fast and slow isoparvalbumins in these fish represent two distinct evolutionary lineages which appear to be evolving at different rates.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 12 (1986), S. 1013-1023 
    ISSN: 1573-1561
    Keywords: Marine animals ; macromolecules ; peptides ; glycoproteins ; behavior ; prey detection ; site selection ; metamorphosis ; biopolymers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A review of the roles of biopolymers as marine chemical cues is presented. The goal of the review is to provide a context within which to view present research and to provide insight into future research potential for macromolecules in marine chemical ecology. The roles of peptides, proteins, glycoproteins, proteoglycans, lectins, and mucopolysaccharides are discussed. Biological events mediated include: larval settlement and metamorphosis, gamete attraction, predator-prey interactions, alarm responses, feeding responses, nonfood resource acquisition, trail following, and larval-release behavior. Molecular origins, transmission, modulation, and multifunctionality of cues are discussed and illustrated with specific examples. The advantages of biopolymers, especially peptides and proteins, as specific cues in marine systems derive from their solubility, specific information content (due to the asymmetric nature of the monomer and the wordlike information content of the primary structure of the polymer), distance transmission in water by bulk flow rather than diffusion, relatively high signal-to-noise ratio, and common occurrence as structural and metabolic components of all living organisms.
    Type of Medium: Electronic Resource
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