Proteins corresponding to diphtheria toxin for vaccine prodn.

    公开(公告)号:IT1167672B

    公开(公告)日:1987-05-13

    申请号:IT2402083

    申请日:1983-12-05

    Applicant: SCLAVO SPA

    Inventor: RAPPUOLI RINO

    Abstract: Method comprises cultivation of a microorganism of the Corynebacterium diphtheriae family having two mutant phages (bacterophages) carrying coding for the protein corresp. to the diphtheria toxin and integrated in non-tandem mode into their chromosomes. The cultivation is effected in a neutral liq. nutritive medium contg. 0.05-0.5 pref. 0.1, micrograms/ml of iron ions, at 30-40 pref. 37-37 deg.C, under aerobic conditions.

    45.
    发明专利
    未知

    公开(公告)号:FR2540516A1

    公开(公告)日:1984-08-10

    申请号:FR8401863

    申请日:1984-02-07

    Applicant: SCLAVO SPA

    Inventor: RAPPUOLI RINO

    Abstract: Process for the production of a protein correlated with the diphtheric toxin which comprises culturing in a liquid nutrient medium having a concentration of iron ions of from 0.05 mu g/ml to 0.5 mu g/ml, at a temperature of from 30 DEG C. to 40 DEG C., in a neutral culturing environment and under aerobic conditions, a microorganism belonging to the Corynebacterium diphtheriae genus with two mutant phages encoding the protein correlated with the diphtheric toxin integrated in a nontandem mode in their chromosomes.

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