AMBLYOMMIN, A NEW ACTIVE SUBSTANCE FOR ANTICOAGULANT THERAPY

摘要

The invention relates to a new active substance-amblyommin-for anticoagulant therapy and to a process for the isolation thereof from hard ticks. The isolated protein having a thrombin-inhibitory action has a molecular weight of 20000 to 30000 dalton, an isoelectric point between 5.05 and 5.65 and the partial amino acid sequences Ile-Leu-Phe-Thr-Gln-Gly-Asn-X-Gly-Glu-Leu-Glu-Asn-X-Phe-Glu-, Lys-Ile-Leu-Phe-X-Gln-Gly- and Ala-Ser-Tyr-Ile-Val-X-Ser-Glu-Ser-Ile-Gln-Ile-Leu-X-Leu-Ser-Glu-Gly-Ile- in which each radical X can be identical or different and each represents a naturally occurring amino acid.