Abstract
Protein content and properties in the seminal plasma of Atlantic halibut (Hippoglossus hippoglossus) were assayed using spectrophotometric and electrophoretic methods. The protein concentration ranged from 6.4 ± 3.1 to 19.4 ± 3.4 mg ml−1 and anti-proteolytic activity from 585.2 ± 104.6 to 2912.4 ± 367.4 U l−l. A high correlation between anti-proteolytic activity and protein concentration (r = 0.95), and between sperm concentration and osmolality was found (r = 0.92). There was a significant decrease in anti-proteolytic activity from the first to the second sampling, but not in protein concentration. Anti-proteolytic activity and protein concentration were significantly affected by variations in individual males. Electrophoresis revealed four anti-proteolytic bands and individual differences in bands of proteolytic activity, which were subsequently characterized as metalloproteases and serine proteases.
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Acknowledgments
We would like to thank Kiron Viswanath for sampling the seminal plasma and Halina Karol for excellent technical assistance. The study was supported from Forskningsutvalget, Bodø University College.
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Mommens, M., Wojtczak, M., Ciereszko, A. et al. Seminal plasma proteins of Atlantic halibut (Hippoglossus hippoglossus L.). Fish Physiol Biochem 34, 349–355 (2008). https://doi.org/10.1007/s10695-007-9194-x
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DOI: https://doi.org/10.1007/s10695-007-9194-x
Keywords
- Anti-proteolytic activity
- Protein concentration
- Proteolytic activity