Abstract: The embodiments of this invention relate to an electronic device (9) intended to be installed in a portable device (1), which electronic device comprises: • a microcontroller (13) configured to communicate with a first interface (5) of the portable device in accordance with a first protocol, the said first interface (5) supplying power voltage to the microcontroller, the said power voltage being standardised by the said first protocol, • a secure electronic chip component (15) configured to communicate with a second interface (7) of the portable device in accordance with a second protocol, the said second interface (7) supplying power voltage to the secure component, the said power voltage being standardised by the said second protocol, • means for communication (17) between the secure component (15) and the microcontroller (13), in which the means for communication comprise a module for voltage adaptation (19) depending on the power voltages supplied by the first and second interfaces.

Abstract: The embodiments of this invention relate to an electronic device (9) intended to be installed in a portable device (1), which electronic device comprises: a microcontroller (13) configured to communicate with a first interface (5) of the portable device in accordance with a first protocol, the said first interface (5) supplying power voltage to the microcontroller, the said power voltage being standardised by the said first protocol, a secure electronic chip component (15) configured to communicate with a second interface (7) of the portable device in accordance with a second protocol, the said second interface (7) supplying power voltage to the secure component, the said power voltage being standardised by the said second protocol, means for communication (17) between the secure component (15) and the microcontroller (13), in which the means for communication comprise a module for voltage adaptation (19) depending on the power voltages supplied by the first and second interfaces.

Abstract: The gene for outer membrane protein P1 of Haemophilus influenzae b is expressed in E. coli. Methods for expression and demonstration of the immunogenicity of recombinant P1 and portions thereof are disclosed, along with an improved method for the purification of P1. The nucleotide sequence of the P1 gene and the derived amino acid sequence of the P1 protein of Haemophilus influenzae type b are disclosed and the methods used to determine the same. Also disclosed are the methods used to clone and express the P1 gene as well as the purification protocol for the P1 gene products (recombinant P1 and P1 fusion proteins). Fourteen peptides are synthesized corresponding to specific sequences of the mature P1 protein. The use of the P1 protein as n immunogens for immunization against the disease caused by Haemophilus influenzae type b and the use of the protein as a carrier for conjugation with an oligosaccharide derived from Haemophilus to generate a potentially efficacious vaccine against the disease, are described.