Sialic acids in the gametes of the sea urchin

Eggs and sperm of several Mediterranean sea urchin species have been studied by means of the direct Ehrlich reaction and, to a minor extent, Bial's orcinol reaction. The results indicated that sialic acids are present in the gametes. This conclusion was supported by ion exchange chromatography,...

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Bibliographic Details
Published inExperimental cell research Vol. 17; no. 3; pp. 439 - 446
Main Authors Perlmann, P., Boström, H., Vestermark, A.
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.06.1959
Subjects
Amino Acids - metabolism
Animals
Echinodermata
Germ Cells
Old Medline
Sea Urchins
Sialic Acids
ECHINODERMS
AMINO ACIDS/metabolism
GERM CELLS
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Summary:Eggs and sperm of several Mediterranean sea urchin species have been studied by means of the direct Ehrlich reaction and, to a minor extent, Bial's orcinol reaction. The results indicated that sialic acids are present in the gametes. This conclusion was supported by ion exchange chromatography, where the hydrolysates from homogenates of sea urchin eggs were similar to those from ox submaxillary gland. The eggs of Paracentrotus lividus have been analysed in greater detail. The unfertilized eggs contain large amounts of sialic acids. Approximately half of these are localized in a particulate fraction. No clear cut evidence has been obtained concerning the content of sialic acids in the jelly layers surrounding the egg. The amount of sialic acids in the eggs seems to increase during embryological development.
Bibliography:ObjectType-Article-1
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ISSN:0014-4827
1090-2422
DOI:10.1016/0014-4827(59)90064-3