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Anion-mediated lysine-arginine interaction. Evidence in Chaetopterus variopedatus sperm protamine
M Piscopo1, L Tomei, L De Petrocellis
1Department of Genetics, General and Molecular Biology, University of Naples Federico II, Italy.
FEBS Letters
|November 8, 1993
Abstract:
Chaetopterus ariopedatus sperm protamine is a stable oligomer. Specific amino acid side chain modifications show that the oligomeric structure depends on anion-mediated lysine-arginine interactions. The occurrence of this type of interaction is confirmed by the finding that poly-L-arginine readily forms aggregates with poly-L-lysine or with the native but not with the protamine with carbamylated epsilon-amino groups.