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Extracellular matrix of the regeneration chamber and plasma membranes of the epidermis during leg regeneration in an insect Carausius morosus. Tissue Cell 1991; 23:41-55. [DOI: 10.1016/0040-8166(91)90065-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/1990] [Revised: 08/27/1990] [Indexed: 11/23/2022]
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Martin J. Composition of egg-shell and cast larval skin of Rhodnius prolixus and pupal case of pieris brassicae. ACTA ACUST UNITED AC 1975. [DOI: 10.1016/0020-1790(75)90065-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Delachambre J. La formation des canaux cuticulaires chez l'adulte de Tenebrio molitor L. étude ultrastructurale et remarques histochimiques. Tissue Cell 1971; 3:499-520. [DOI: 10.1016/s0040-8166(71)80048-4] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/1971] [Indexed: 12/01/2022]
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McCormick JJ, Blomquist JC, Rusch HP. Isolation and Characterization of a Galactosamine Wall from Spores and Spherules of
Physarum polycephalum. J Bacteriol 1970; 104:1119-25. [PMID: 16559084 PMCID: PMC248268 DOI: 10.1128/jb.104.3.1119-1125.1970] [Citation(s) in RCA: 42] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The myxomycete,
Physarum polycephalum
, can be induced under laboratory conditions to form two different hard-walled forms, spores and spherules. Characterization of both types of walls revealed only a single sugar, galactosamine. It was identified after acid hydrolysis of the isolated walls by chromatography in three solvent systems, by its positive reaction with ammoniacal silver nitrate, ninhydrin, Galactostat, and the Elson-Morgan test, and by ninhydrin degradation to lyxose. Galactosamine was present as a polymer with solubility characteristics the same as the β1-4–linked glucosamine polymer (chitosan). The walls were also found to contain about 2% protein. Spherule walls revealed a single glycoprotein on gel electrophoresis. Spore walls contained a similar protein component. The phosphate content of isolated spherule walls was 9.8%, and that of spore walls was 1.4%. Spore walls also contained about 15% melanin which was shown to be similar to fungal melanin. A novel method was used to measure the rate of mature spherule formation based on the loss of extractability of
P. polycephalum
natural pigment. The presence of a rare galactosamine polymer in
P. polycephalum
spore and spherule walls as the only carbohydrate suggests that the myxomycetes are not closely related to the fungi or the protozoa.
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Affiliation(s)
- J J McCormick
- McArdle Laboratory for Cancer Research, University of Wisconsin Medical School, Madison, Wisconsin 53706
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