Biol. Bull.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF) Free
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Saperas, N.
Right arrow Articles by Kasinsky, H. E.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Saperas, N.
Right arrow Articles by Kasinsky, H. E.

The Biological Bulletin, Vol 185, Issue 2 186-196, Copyright © 1993 by Marine Biological Laboratory

DEVELOPMENT AND REPRODUCTION

Sperm-Specific Basic Proteins in the Holocephalan Fish Hydrolagus colliei (Chondrichthyes, Chimaeriformes) and Comparison with Protamines from an Elasmobranch

N. Saperas, M. Chiva, N. C. Bols, D. Kulak and H. E. Kasinsky
Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada V6T IZ4, and Bamfield Marine Station, Bamfield, British Columbia, Canada V0R 1B0

Seven basic proteins can be isolated from sperm nuclei of the holocephalan ratfish Hydrolagus colliei. Two of these proteins (R3 and m0) are devoid of cysteine, whereas five of them (R1, R2, m1, m2, and m3) contain low levels of this amino acid residue. The proteins R1, R2, and R3 are major ones in the sperm nuclei of H. colliei, and they are analogous to basic proteins Z1, Z2, and Z3 (scylliorhinines) from the sperm of the elasmobranch Scyliorhinus canicula. However, taking into account the partial sequence of R3 protein and the number of cysteines in R1 and R2, these proteins do not seem to be homologous to the scylliorhinines. A comparison of sperm basic proteins between H. colliei (a holocephalan) and S. canicula (an elasmobranch) suggests a remarkable divergence of these proteins from a common ancestral pattern during the evolution of Chondrichthyes.


This article has been cited by other articles:


Home page
 J. Biol. Chem.Home page
C. Caceres, P. Gimenez-Bonafe, E. Ribes, D. Wouters-Tyrou, A. Martinage, M. Kouach, P. Sautiere, S. Muller, J. Palau, J. A. Subirana, et al.
DNA-interacting Proteins in the Spermiogenesis of the Mollusc Murex brandaris
J. Biol. Chem., January 8, 1999; 274(2): 649 - 656.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1993 by the Marine Biological Laboratory.