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  • 1
    Electronic Resource
    Electronic Resource
    A BRAIN-SPECIFIC PROTEIN FROM OCTOPUS VULGARIS, LAM (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 29 (1977), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— Several major brain-specific proteins have been detected in cephalopods by electrophoretic analysis of the soluble proteins extracted from the optic lobes and other organs of octopus and by 2-dimensional fractionation of the soluble proteins from optic lobes and hepatopancreases of octopus and squid. One of the brain-specific proteins from octopus, identified as 0-1, has been purified by chromatography on DEAE-cellulose, Sephadex G-150, and DEAE-Sephadex. The protein appears to be pure on the basis of several physicochemical criteria. Amino acid analysis indicates a high content of glutamic and aspartic acids or their amides (or both) and the lack of tryptophan. A molecular weight of 17,000 has been calculated from sodium dodecyl sulphate-gel electrophoresis, gel filtration and ultracentrifugation analysis. The preparation of a specific rabbit antiserum against 0-1 has allowed its determination by agar immunodiffusion and complement fixation techniques. With the latter procedure it has been shown that the protein is absent outside the nervous system, is present in a concentration of several mg/g wet weight in octopus brain and is widely distributed within the octopus central and peripheral nervous system and in several molluscan species. It is also present in optic lobes of octopus at early stages of development.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1977.tb09614.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    PROTEIN PATTERNS IN DIFFERENT LOBES AND DURING DEVELOPMENT OF OCTOPUS BRAIN (1975)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 24 (1975), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— Utilizing techniques of continuous and SDS-electrophoresis we have examined the saline-soluble and SDS-soluble (membrane-bound) proteins extracted from the main lobes of adult octopus brain and from the developing optic lobe of the same species. Several additional protein bands are present among the soluble and the membrane-bound proteins of the vertical lobe in comparison with the suboesophageal lobe. Since the former contains an essentially homogeneous population of small neurons, while the suboesophageal lobe is rich in large nerve cells, these protein bands have been attributed to the small neuronal type present in the vertical lobe.In the course of a 10,000-fold increment in body weight, from 0.4 g to 4 kg, there is a significant increase in the concentration of several soluble proteins extracted from the optic lobe. Three of these proteins increase to a marked degree. Among the membrane-bound proteins some show a moderate increase with age while other protein components of smaller molecular weight undergo a moderate decrease. The overall tissue concentration of the membrane-bound proteins increases between 0.4 g and 50 g body weight, slightly declining in animals of larger size.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1975.tb03888.x
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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