N-Terminal Amino Acid Sequence of Boar Sperm Acrosin. Homology with Other Serine Proteinases

Authors:
  • RFRoselinde Fock-Nüzel
    Roselinde Fock-Nüzel
  • FLFriedrich Lottspeich
    Friedrich Lottspeich
  • AHAgnes Henschen
    Agnes Henschen
  • WMWerner Müller-Esterl
    Werner Müller-Esterl
  • HFHans Fritz
    Hans Fritz
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Abstract
Boar acrosin with a molecular weight of 38,000 had been isolated. An N-terminal amino acid sequence of 52 residues was determined on the S-carboxymethylated material. The protein contains a single peptide chain. Up to 48% of the positions in the sequence show identity with those of some serine proteinases. The highest degree of homology was found at the comparison with plasmin and chymotrypsin. The N-terminus of acrosin corresponds to that of a serine proteinase in the activated form. The N-terminal amino acid is valine.

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