We studied the variation of antigenic properties of proteins in two sturgeon species at different stages of postembryonic development. The deepest changes occurred in individual components of albumins and β-globulins (transferrins) and were mostly related to an increased proportion of the protein accounting for these antigens. Transformation of the main component of albumins A1 into adult antigens was completed in 5-month old juveniles. The main component of β-globulins βA (component of transferrins) appeared in the blood flow much later than other proteins and could retain the juvenile features until the age of 3–4 years. Other antigens belonging to α1- and α2-globulins and the second component of transferrins were more stable and did not undergo substantial changes. The direction of ontogenetic variation of serum antigens in sturgeon juveniles did not depend on the habitat of adult fish in fresh or sea water.
Russian Journal of Developmental Biology – Springer Journals
Published: Dec 30, 2004
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